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Hedman Elite Ultra-Duty HTC Coated Full Length Headers 1968-91 Blazer/Jimmy/Suburban/Pickup 396-454

500-69821

made in usa

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Hedman 69821
$713.99
Elite Ultra-Duty HTC Coated Full Length Headers
  • 1968-91 Blazer/Jimmy/Suburban/Pickup 396-454
  • Includes Air Tubes
  • Tube Size: 1-3/4"
  • Collector Size: 3"
  • Free Shipping - Ships directly from the manufacturer on 02/25/20
    Save $20 on $250, $50 on $500, $100 on $1,000 Orders. Promo Code: CHARGER exclusions apply
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    1980-1986  GMC C2500

    • Fitment_Note: Air Conditioning: Yes; Power Steering: Yes; Auto Transmission - Column: Yes; Auto Transmission - Floor: Yes; Manual Transmission - Column: Yes; Manual Transmission - Floor: Yes; Footnotes: (112) Must use factory big block chevy hardware and mounts.; Footnotes: (139) Must use 1975 and later model clutch linkage located at rear of engine.; Footnotes: (160) Early chassis only.; Footnotes: (213) Elite replacement gasket 27550.; Footnotes: (4) Includes parts necessary to retain emission devices. (50 State); Footnotes: (45) Not legal for sale or use in California on pollution controlled motor vehicles.; Footnotes: (5) With A.I.R. system.; Footnotes: (6) Modification to stock exhaust required to retain catalytic converter.; Footnotes: (208) Due to cylinder heads (aluminum) generation 6 engines, 502 BB Chevy may have clearance problems on some applications. Bottom of header flanges may hit head bolts. Notching may be necessary.; Drivetrain: 2WD; E.O. Number: D167-9; Emissions Notes: 1974 and earlier vehicles WITH A.I.R.: These headers are legal for use on '74-earlier vehicles with A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed from vehicle.
    • Liter: 7.4
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: W
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1980-1989  CHEVROLET P30

    • Fitment_Note: Air Conditioning: Yes; Power Steering: Yes; Auto Transmission - Column: Yes; Auto Transmission - Floor: Yes; Manual Transmission - Column: No; Manual Transmission - Floor: No; Footnotes: (225) Designed for use with a Trans-Dapt throttle body spacer.; Footnotes: (38) 16 gauge tubing.; Footnotes: (4) Includes parts necessary to retain emission devices. (50 State); Footnotes: (42) Square port hedder.; Footnotes: (5) With A.I.R. system.; Footnotes: (6) Modification to stock exhaust required to retain catalytic converter.; E.O. Number: D167-9; CHEVROLET Class A Motorhomes with a 396-454 BB Chevy
    • Liter: 7.4
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: W
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1968-1969  GMC K25/K2500 SUBURBAN

    • Fitment_Note: Air Conditioning: Yes; Power Steering: Yes; Auto Transmission - Column: Yes; Auto Transmission - Floor: Yes; Manual Transmission - Column: Yes; Manual Transmission - Floor: Yes; Footnotes: (112) Must use factory big block chevy hardware and mounts.; Footnotes: (139) Must use 1975 and later model clutch linkage located at rear of engine.; Footnotes: (160) Early chassis only.; Footnotes: (213) Elite replacement gasket 27550.; Footnotes: (225) Designed for use with a Trans-Dapt throttle body spacer.; Footnotes: (4) Includes parts necessary to retain emission devices. (50 State); Footnotes: (5) With A.I.R. system.; Footnotes: (6) Modification to stock exhaust required to retain catalytic converter.; Footnotes: (208) Due to cylinder heads (aluminum) generation 6 engines, 502 BB Chevy may have clearance problems on some applications. Bottom of header flanges may hit head bolts. Notching may be necessary.; Drivetrain: 4WD; E.O. Number: D167-9; Emissions Notes: 1974 and earlier vehicles WITH A.I.R.: These headers are legal for use on '74-earlier vehicles with A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed from vehicle.
    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: E
    • CUI: 307
    • EngineType: V8 ( 5 L / 307 )

    1976  GMC JIMMY

    • Fitment_Note: Air Conditioning: Yes; Power Steering: Yes; Auto Transmission - Column: Yes; Auto Transmission - Floor: Yes; Manual Transmission - Column: Yes; Manual Transmission - Floor: Yes; Footnotes: (112) Must use factory big block chevy hardware and mounts.; Footnotes: (139) Must use 1975 and later model clutch linkage located at rear of engine.; Footnotes: (213) Elite replacement gasket 27550.; Footnotes: (225) Designed for use with a Trans-Dapt throttle body spacer.; Footnotes: (4) Includes parts necessary to retain emission devices. (50 State); Footnotes: (45) Not legal for sale or use in California on pollution controlled motor vehicles.; Footnotes: (5) With A.I.R. system.; Footnotes: (6) Modification to stock exhaust required to retain catalytic converter.; Footnotes: (208) Due to cylinder heads (aluminum) generation 6 engines, 502 BB Chevy may have clearance problems on some applications. Bottom of header flanges may hit head bolts. Notching may be necessary.; Drivetrain: 2WD; E.O. Number: D167-27; Emissions Notes: 1974 and earlier vehicles WITH A.I.R.: These headers are legal for use on '74-earlier vehicles with A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed from vehicle.; 1/2 Ton, Full-sized only.
    • Liter: 7.4
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: Y
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1968-1969  GMC K25/K2500 PICKUP

    • Fitment_Note: Air Conditioning: Yes; Power Steering: Yes; Auto Transmission - Column: Yes; Auto Transmission - Floor: Yes; Manual Transmission - Column: No; Manual Transmission - Floor: Yes; Footnotes: (112) Must use factory big block chevy hardware and mounts.; Footnotes: (139) Must use 1975 and later model clutch linkage located at rear of engine.; Footnotes: (213) Elite replacement gasket 27550.; Footnotes: (4) Includes parts necessary to retain emission devices. (50 State); Footnotes: (5) With A.I.R. system.; Footnotes: (6) Modification to stock exhaust required to retain catalytic converter.; Drivetrain: 4WD; E.O. Number: D167-9; Emissions Notes: 1974 and earlier vehicles WITH A.I.R.: These headers are legal for use on '74-earlier vehicles with A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed from vehicle.
    • Liter: 6.5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: E
    • CUI: 396
    • EngineType: V8 ( 6.5 L / 396 )

    1975  GMC C25 SUBURBAN

    • Fitment_Note: Air Conditioning: Yes; Power Steering: Yes; Auto Transmission - Column: Yes; Auto Transmission - Floor: Yes; Manual Transmission - Column: Yes; Manual Transmission - Floor: Yes; Footnotes: (112) Must use factory big block chevy hardware and mounts.; Footnotes: (139) Must use 1975 and later model clutch linkage located at rear of engine.; Footnotes: (160) Early chassis only.; Footnotes: (213) Elite replacement gasket 27550.; Footnotes: (225) Designed for use with a Trans-Dapt throttle body spacer.; Footnotes: (4) Includes parts necessary to retain emission devices. (50 State); Footnotes: (45) Not legal for sale or use in California on pollution controlled motor vehicles.; Footnotes: (5) With A.I.R. system.; Footnotes: (6) Modification to stock exhaust required to retain catalytic converter.; Footnotes: (208) Due to cylinder heads (aluminum) generation 6 engines, 502 BB Chevy may have clearance problems on some applications. Bottom of header flanges may hit head bolts. Notching may be necessary.; Drivetrain: 2WD; E.O. Number: D167-9; Emissions Notes: 1974 and earlier vehicles WITH A.I.R.: These headers are legal for use on '74-earlier vehicles with A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed from vehicle.
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: Y
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1976  GMC K25 SUBURBAN

    • Fitment_Note: Air Conditioning: Yes; Power Steering: Yes; Auto Transmission - Column: Yes; Auto Transmission - Floor: Yes; Manual Transmission - Column: Yes; Manual Transmission - Floor: Yes; Footnotes: (112) Must use factory big block chevy hardware and mounts.; Footnotes: (139) Must use 1975 and later model clutch linkage located at rear of engine.; Footnotes: (160) Early chassis only.; Footnotes: (213) Elite replacement gasket 27550.; Footnotes: (225) Designed for use with a Trans-Dapt throttle body spacer.; Footnotes: (4) Includes parts necessary to retain emission devices. (50 State); Footnotes: (5) With A.I.R. system.; Footnotes: (6) Modification to stock exhaust required to retain catalytic converter.; Footnotes: (208) Due to cylinder heads (aluminum) generation 6 engines, 502 BB Chevy may have clearance problems on some applications. Bottom of header flanges may hit head bolts. Notching may be necessary.; Drivetrain: 4WD; E.O. Number: D167-9; Emissions Notes: 1974 and earlier vehicles WITH A.I.R.: These headers are legal for use on '74-earlier vehicles with A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed from vehicle.
    • Liter: 6.6
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: U
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1973-1974  GMC C25/C2500 SUBURBAN

    • Fitment_Note: Air Conditioning: Yes; Power Steering: Yes; Auto Transmission - Column: Yes; Auto Transmission - Floor: Yes; Manual Transmission - Column: Yes; Manual Transmission - Floor: Yes; Footnotes: (112) Must use factory big block chevy hardware and mounts.; Footnotes: (139) Must use 1975 and later model clutch linkage located at rear of engine.; Footnotes: (160) Early chassis only.; Footnotes: (213) Elite replacement gasket 27550.; Footnotes: (225) Designed for use with a Trans-Dapt throttle body spacer.; Footnotes: (4) Includes parts necessary to retain emission devices. (50 State); Footnotes: (45) Not legal for sale or use in California on pollution controlled motor vehicles.; Footnotes: (5) With A.I.R. system.; Footnotes: (6) Modification to stock exhaust required to retain catalytic converter.; Footnotes: (208) Due to cylinder heads (aluminum) generation 6 engines, 502 BB Chevy may have clearance problems on some applications. Bottom of header flanges may hit head bolts. Notching may be necessary.; Drivetrain: 2WD; E.O. Number: D167-9; Emissions Notes: 1974 and earlier vehicles WITH A.I.R.: These headers are legal for use on '74-earlier vehicles with A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed from vehicle.
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: W
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1980  GMC C1500

    • Liter: 7.4
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SIERRA CLASSIC
    • Engine Vin: W
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1968-1969  GMC K25/K2500 SUBURBAN

    • Fitment_Note: Air Conditioning: Yes; Power Steering: Yes; Auto Transmission - Column: Yes; Auto Transmission - Floor: Yes; Manual Transmission - Column: Yes; Manual Transmission - Floor: Yes; Footnotes: (112) Must use factory big block chevy hardware and mounts.; Footnotes: (139) Must use 1975 and later model clutch linkage located at rear of engine.; Footnotes: (160) Early chassis only.; Footnotes: (213) Elite replacement gasket 27550.; Footnotes: (225) Designed for use with a Trans-Dapt throttle body spacer.; Footnotes: (4) Includes parts necessary to retain emission devices. (50 State); Footnotes: (5) With A.I.R. system.; Footnotes: (6) Modification to stock exhaust required to retain catalytic converter.; Footnotes: (208) Due to cylinder heads (aluminum) generation 6 engines, 502 BB Chevy may have clearance problems on some applications. Bottom of header flanges may hit head bolts. Notching may be necessary.; Drivetrain: 4WD; E.O. Number: D167-9; Emissions Notes: 1974 and earlier vehicles WITH A.I.R.: These headers are legal for use on '74-earlier vehicles with A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed from vehicle.
    • Liter: 4.8
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: -
    • CUI: 292
    • EngineType: L6 ( 4.8 L / 292 )

    1976  GMC K25 SUBURBAN

    • Fitment_Note: Air Conditioning: Yes; Power Steering: Yes; Auto Transmission - Column: Yes; Auto Transmission - Floor: Yes; Manual Transmission - Column: Yes; Manual Transmission - Floor: Yes; Footnotes: (112) Must use factory big block chevy hardware and mounts.; Footnotes: (139) Must use 1975 and later model clutch linkage located at rear of engine.; Footnotes: (160) Early chassis only.; Footnotes: (213) Elite replacement gasket 27550.; Footnotes: (225) Designed for use with a Trans-Dapt throttle body spacer.; Footnotes: (4) Includes parts necessary to retain emission devices. (50 State); Footnotes: (5) With A.I.R. system.; Footnotes: (6) Modification to stock exhaust required to retain catalytic converter.; Footnotes: (208) Due to cylinder heads (aluminum) generation 6 engines, 502 BB Chevy may have clearance problems on some applications. Bottom of header flanges may hit head bolts. Notching may be necessary.; Drivetrain: 4WD; E.O. Number: D167-9; Emissions Notes: 1974 and earlier vehicles WITH A.I.R.: These headers are legal for use on '74-earlier vehicles with A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed from vehicle.
    • Liter: 7.4
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: Y
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1974  GMC C25/C2500 SUBURBAN

    • Fitment_Note: Air Conditioning: Yes; Power Steering: Yes; Auto Transmission - Column: Yes; Auto Transmission - Floor: Yes; Manual Transmission - Column: Yes; Manual Transmission - Floor: Yes; Footnotes: (112) Must use factory big block chevy hardware and mounts.; Footnotes: (139) Must use 1975 and later model clutch linkage located at rear of engine.; Footnotes: (160) Early chassis only.; Footnotes: (213) Elite replacement gasket 27550.; Footnotes: (225) Designed for use with a Trans-Dapt throttle body spacer.; Footnotes: (4) Includes parts necessary to retain emission devices. (50 State); Footnotes: (45) Not legal for sale or use in California on pollution controlled motor vehicles.; Footnotes: (5) With A.I.R. system.; Footnotes: (6) Modification to stock exhaust required to retain catalytic converter.; Footnotes: (208) Due to cylinder heads (aluminum) generation 6 engines, 502 BB Chevy may have clearance problems on some applications. Bottom of header flanges may hit head bolts. Notching may be necessary.; Drivetrain: 2WD; E.O. Number: D167-9; Emissions Notes: 1974 and earlier vehicles WITH A.I.R.: These headers are legal for use on '74-earlier vehicles with A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed from vehicle.
    • Liter: 4.8
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: S
    • CUI: 292
    • EngineType: L6 ( 4.8 L / 292 )

    1968-1969  CHEVROLET C20 PICKUP

    • Fitment_Note: Air Conditioning: Yes; Power Steering: Yes; Auto Transmission - Column: Yes; Auto Transmission - Floor: Yes; Manual Transmission - Column: Yes; Manual Transmission - Floor: Yes; Footnotes: (112) Must use factory big block chevy hardware and mounts.; Footnotes: (139) Must use 1975 and later model clutch linkage located at rear of engine.; Footnotes: (160) Early chassis only.; Footnotes: (213) Elite replacement gasket 27550.; Footnotes: (4) Includes parts necessary to retain emission devices. (50 State); Footnotes: (45) Not legal for sale or use in California on pollution controlled motor vehicles.; Footnotes: (5) With A.I.R. system.; Footnotes: (6) Modification to stock exhaust required to retain catalytic converter.; Footnotes: (208) Due to cylinder heads (aluminum) generation 6 engines, 502 BB Chevy may have clearance problems on some applications. Bottom of header flanges may hit head bolts. Notching may be necessary.; Drivetrain: 2WD; E.O. Number: D167-9; Emissions Notes: 1974 and earlier vehicles WITH A.I.R.: These headers are legal for use on '74-earlier vehicles with A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed from vehicle.
    • Liter: 6.5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: Y
    • CUI: 396
    • EngineType: V8 ( 6.5 L / 396 )

    1973-1974  CHEVROLET K20 SUBURBAN

    • Fitment_Note: Air Conditioning: Yes; Power Steering: Yes; Auto Transmission - Column: Yes; Auto Transmission - Floor: Yes; Manual Transmission - Column: Yes; Manual Transmission - Floor: Yes; Footnotes: (112) Must use factory big block chevy hardware and mounts.; Footnotes: (139) Must use 1975 and later model clutch linkage located at rear of engine.; Footnotes: (160) Early chassis only.; Footnotes: (213) Elite replacement gasket 27550.; Footnotes: (225) Designed for use with a Trans-Dapt throttle body spacer.; Footnotes: (4) Includes parts necessary to retain emission devices. (50 State); Footnotes: (5) With A.I.R. system.; Footnotes: (6) Modification to stock exhaust required to retain catalytic converter.; Footnotes: (208) Due to cylinder heads (aluminum) generation 6 engines, 502 BB Chevy may have clearance problems on some applications. Bottom of header flanges may hit head bolts. Notching may be necessary.; Drivetrain: 4WD; E.O. Number: D167-9; Emissions Notes: 1974 and earlier vehicles WITH A.I.R.: These headers are legal for use on '74-earlier vehicles with A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed from vehicle.
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: -
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1985  CHEVROLET K20 SUBURBAN

    • Fitment_Note: Air Conditioning: Yes; Power Steering: Yes; Auto Transmission - Column: Yes; Auto Transmission - Floor: Yes; Manual Transmission - Column: Yes; Manual Transmission - Floor: Yes; Footnotes: (112) Must use factory big block chevy hardware and mounts.; Footnotes: (139) Must use 1975 and later model clutch linkage located at rear of engine.; Footnotes: (160) Early chassis only.; Footnotes: (213) Elite replacement gasket 27550.; Footnotes: (225) Designed for use with a Trans-Dapt throttle body spacer.; Footnotes: (4) Includes parts necessary to retain emission devices. (50 State); Footnotes: (5) With A.I.R. system.; Footnotes: (6) Modification to stock exhaust required to retain catalytic converter.; Footnotes: (208) Due to cylinder heads (aluminum) generation 6 engines, 502 BB Chevy may have clearance problems on some applications. Bottom of header flanges may hit head bolts. Notching may be necessary.; Drivetrain: 4WD; E.O. Number: D167-9; Emissions Notes: 1974 and earlier vehicles WITH A.I.R.: These headers are legal for use on '74-earlier vehicles with A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed from vehicle.
    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: CUSTOM
    • Engine Vin: H
    • CUI: 305
    • EngineType: V8 ( 5 L / 305 )

    1968-1969  CHEVROLET C30 PICKUP

    • Fitment_Note: Air Conditioning: Yes; Power Steering: Yes; Auto Transmission - Column: Yes; Auto Transmission - Floor: Yes; Manual Transmission - Column: Yes; Manual Transmission - Floor: Yes; Footnotes: (112) Must use factory big block chevy hardware and mounts.; Footnotes: (139) Must use 1975 and later model clutch linkage located at rear of engine.; Footnotes: (160) Early chassis only.; Footnotes: (213) Elite replacement gasket 27550.; Footnotes: (4) Includes parts necessary to retain emission devices. (50 State); Footnotes: (45) Not legal for sale or use in California on pollution controlled motor vehicles.; Footnotes: (5) With A.I.R. system.; Footnotes: (6) Modification to stock exhaust required to retain catalytic converter.; Footnotes: (208) Due to cylinder heads (aluminum) generation 6 engines, 502 BB Chevy may have clearance problems on some applications. Bottom of header flanges may hit head bolts. Notching may be necessary.; Drivetrain: 2WD; E.O. Number: D167-9; Emissions Notes: 1974 and earlier vehicles WITH A.I.R.: These headers are legal for use on '74-earlier vehicles with A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed from vehicle.
    • Liter: 6.5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: E
    • CUI: 396
    • EngineType: V8 ( 6.5 L / 396 )

    1973-1974  GMC C25/C2500 SUBURBAN

    • Fitment_Note: Air Conditioning: Yes; Power Steering: Yes; Auto Transmission - Column: Yes; Auto Transmission - Floor: Yes; Manual Transmission - Column: Yes; Manual Transmission - Floor: Yes; Footnotes: (112) Must use factory big block chevy hardware and mounts.; Footnotes: (139) Must use 1975 and later model clutch linkage located at rear of engine.; Footnotes: (160) Early chassis only.; Footnotes: (213) Elite replacement gasket 27550.; Footnotes: (225) Designed for use with a Trans-Dapt throttle body spacer.; Footnotes: (4) Includes parts necessary to retain emission devices. (50 State); Footnotes: (45) Not legal for sale or use in California on pollution controlled motor vehicles.; Footnotes: (5) With A.I.R. system.; Footnotes: (6) Modification to stock exhaust required to retain catalytic converter.; Footnotes: (208) Due to cylinder heads (aluminum) generation 6 engines, 502 BB Chevy may have clearance problems on some applications. Bottom of header flanges may hit head bolts. Notching may be necessary.; Drivetrain: 2WD; E.O. Number: D167-9; Emissions Notes: 1974 and earlier vehicles WITH A.I.R.: These headers are legal for use on '74-earlier vehicles with A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed from vehicle.
    • Liter: 4.1
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: Q
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1987-1991  GMC R2500 SUBURBAN

    • Fitment_Note: Air Conditioning: Yes; Power Steering: Yes; Auto Transmission - Column: Yes; Auto Transmission - Floor: Yes; Manual Transmission - Column: Yes; Manual Transmission - Floor: Yes; Footnotes: (112) Must use factory big block chevy hardware and mounts.; Footnotes: (139) Must use 1975 and later model clutch linkage located at rear of engine.; Footnotes: (160) Early chassis only.; Footnotes: (213) Elite replacement gasket 27550.; Footnotes: (225) Designed for use with a Trans-Dapt throttle body spacer.; Footnotes: (4) Includes parts necessary to retain emission devices. (50 State); Footnotes: (45) Not legal for sale or use in California on pollution controlled motor vehicles.; Footnotes: (5) With A.I.R. system.; Footnotes: (6) Modification to stock exhaust required to retain catalytic converter.; Footnotes: (208) Due to cylinder heads (aluminum) generation 6 engines, 502 BB Chevy may have clearance problems on some applications. Bottom of header flanges may hit head bolts. Notching may be necessary.; Drivetrain: 2WD; E.O. Number: D167-9; Emissions Notes: 1974 and earlier vehicles WITH A.I.R.: These headers are legal for use on '74-earlier vehicles with A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed from vehicle.
    • Liter: 6.2
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: J
    • CUI: 379
    • EngineType: V8 ( 6.2 L / 379 )

    1968-1969  CHEVROLET K20 SUBURBAN

    • Fitment_Note: Air Conditioning: Yes; Power Steering: Yes; Auto Transmission - Column: Yes; Auto Transmission - Floor: Yes; Manual Transmission - Column: Yes; Manual Transmission - Floor: Yes; Footnotes: (112) Must use factory big block chevy hardware and mounts.; Footnotes: (139) Must use 1975 and later model clutch linkage located at rear of engine.; Footnotes: (160) Early chassis only.; Footnotes: (213) Elite replacement gasket 27550.; Footnotes: (225) Designed for use with a Trans-Dapt throttle body spacer.; Footnotes: (4) Includes parts necessary to retain emission devices. (50 State); Footnotes: (5) With A.I.R. system.; Footnotes: (6) Modification to stock exhaust required to retain catalytic converter.; Footnotes: (208) Due to cylinder heads (aluminum) generation 6 engines, 502 BB Chevy may have clearance problems on some applications. Bottom of header flanges may hit head bolts. Notching may be necessary.; Drivetrain: 4WD; E.O. Number: D167-9; Emissions Notes: 1974 and earlier vehicles WITH A.I.R.: These headers are legal for use on '74-earlier vehicles with A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed from vehicle.
    • Liter: 5.3
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: -
    • CUI: 327
    • EngineType: V8 ( 5.3 L / 327 )

    1979-1986  GMC C2500 SUBURBAN

    • Fitment_Note: Air Conditioning: Yes; Power Steering: Yes; Auto Transmission - Column: Yes; Auto Transmission - Floor: Yes; Manual Transmission - Column: Yes; Manual Transmission - Floor: Yes; Footnotes: (112) Must use factory big block chevy hardware and mounts.; Footnotes: (139) Must use 1975 and later model clutch linkage located at rear of engine.; Footnotes: (160) Early chassis only.; Footnotes: (213) Elite replacement gasket 27550.; Footnotes: (225) Designed for use with a Trans-Dapt throttle body spacer.; Footnotes: (4) Includes parts necessary to retain emission devices. (50 State); Footnotes: (45) Not legal for sale or use in California on pollution controlled motor vehicles.; Footnotes: (5) With A.I.R. system.; Footnotes: (6) Modification to stock exhaust required to retain catalytic converter.; Footnotes: (208) Due to cylinder heads (aluminum) generation 6 engines, 502 BB Chevy may have clearance problems on some applications. Bottom of header flanges may hit head bolts. Notching may be necessary.; Drivetrain: 2WD; E.O. Number: D167-9; Emissions Notes: 1974 and earlier vehicles WITH A.I.R.: These headers are legal for use on '74-earlier vehicles with A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed from vehicle.
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: L
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1976-1978  GMC C25 SUBURBAN

    • Fitment_Note: Air Conditioning: Yes; Power Steering: Yes; Auto Transmission - Column: Yes; Auto Transmission - Floor: Yes; Manual Transmission - Column: Yes; Manual Transmission - Floor: Yes; Footnotes: (112) Must use factory big block chevy hardware and mounts.; Footnotes: (139) Must use 1975 and later model clutch linkage located at rear of engine.; Footnotes: (160) Early chassis only.; Footnotes: (213) Elite replacement gasket 27550.; Footnotes: (225) Designed for use with a Trans-Dapt throttle body spacer.; Footnotes: (4) Includes parts necessary to retain emission devices. (50 State); Footnotes: (45) Not legal for sale or use in California on pollution controlled motor vehicles.; Footnotes: (5) With A.I.R. system.; Footnotes: (6) Modification to stock exhaust required to retain catalytic converter.; Footnotes: (208) Due to cylinder heads (aluminum) generation 6 engines, 502 BB Chevy may have clearance problems on some applications. Bottom of header flanges may hit head bolts. Notching may be necessary.; Drivetrain: 2WD; E.O. Number: D167-9; Emissions Notes: 1974 and earlier vehicles WITH A.I.R.: These headers are legal for use on '74-earlier vehicles with A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed from vehicle.
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: L
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1980  CHEVROLET C10

    • Liter: 7.4
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SILVERADO
    • Engine Vin: W
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1976-1977  GMC K25 SUBURBAN

    • Fitment_Note: Air Conditioning: Yes; Power Steering: Yes; Auto Transmission - Column: Yes; Auto Transmission - Floor: Yes; Manual Transmission - Column: Yes; Manual Transmission - Floor: Yes; Footnotes: (112) Must use factory big block chevy hardware and mounts.; Footnotes: (139) Must use 1975 and later model clutch linkage located at rear of engine.; Footnotes: (160) Early chassis only.; Footnotes: (213) Elite replacement gasket 27550.; Footnotes: (225) Designed for use with a Trans-Dapt throttle body spacer.; Footnotes: (4) Includes parts necessary to retain emission devices. (50 State); Footnotes: (5) With A.I.R. system.; Footnotes: (6) Modification to stock exhaust required to retain catalytic converter.; Footnotes: (208) Due to cylinder heads (aluminum) generation 6 engines, 502 BB Chevy may have clearance problems on some applications. Bottom of header flanges may hit head bolts. Notching may be necessary.; Drivetrain: 4WD; E.O. Number: D167-9; Emissions Notes: 1974 and earlier vehicles WITH A.I.R.: These headers are legal for use on '74-earlier vehicles with A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed from vehicle.
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: L
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1990  CHEVROLET V2500 SUBURBAN

    • Fitment_Note: Air Conditioning: Yes; Power Steering: Yes; Auto Transmission - Column: Yes; Auto Transmission - Floor: Yes; Manual Transmission - Column: Yes; Manual Transmission - Floor: Yes; Footnotes: (112) Must use factory big block chevy hardware and mounts.; Footnotes: (139) Must use 1975 and later model clutch linkage located at rear of engine.; Footnotes: (160) Early chassis only.; Footnotes: (213) Elite replacement gasket 27550.; Footnotes: (225) Designed for use with a Trans-Dapt throttle body spacer.; Footnotes: (4) Includes parts necessary to retain emission devices. (50 State); Footnotes: (5) With A.I.R. system.; Footnotes: (6) Modification to stock exhaust required to retain catalytic converter.; Footnotes: (208) Due to cylinder heads (aluminum) generation 6 engines, 502 BB Chevy may have clearance problems on some applications. Bottom of header flanges may hit head bolts. Notching may be necessary.; Drivetrain: 4WD; E.O. Number: D167-9; Emissions Notes: 1974 and earlier vehicles WITH A.I.R.: These headers are legal for use on '74-earlier vehicles with A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed from vehicle.
    • Liter: 7.4
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SCOTTSDALE
    • Engine Vin: N
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1976-1980  CHEVROLET C20 SUBURBAN

    • Fitment_Note: Air Conditioning: Yes; Power Steering: Yes; Auto Transmission - Column: Yes; Auto Transmission - Floor: Yes; Manual Transmission - Column: Yes; Manual Transmission - Floor: Yes; Footnotes: (112) Must use factory big block chevy hardware and mounts.; Footnotes: (139) Must use 1975 and later model clutch linkage located at rear of engine.; Footnotes: (160) Early chassis only.; Footnotes: (213) Elite replacement gasket 27550.; Footnotes: (225) Designed for use with a Trans-Dapt throttle body spacer.; Footnotes: (4) Includes parts necessary to retain emission devices. (50 State); Footnotes: (45) Not legal for sale or use in California on pollution controlled motor vehicles.; Footnotes: (5) With A.I.R. system.; Footnotes: (6) Modification to stock exhaust required to retain catalytic converter.; Footnotes: (208) Due to cylinder heads (aluminum) generation 6 engines, 502 BB Chevy may have clearance problems on some applications. Bottom of header flanges may hit head bolts. Notching may be necessary.; Drivetrain: 2WD; E.O. Number: D167-9; Emissions Notes: 1974 and earlier vehicles WITH A.I.R.: These headers are legal for use on '74-earlier vehicles with A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed from vehicle.
    • Liter: 7.4
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: CUSTOM DELUXE
    • Engine Vin: S
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1968-1969  CHEVROLET K20 SUBURBAN

    • Fitment_Note: Air Conditioning: Yes; Power Steering: Yes; Auto Transmission - Column: Yes; Auto Transmission - Floor: Yes; Manual Transmission - Column: Yes; Manual Transmission - Floor: Yes; Footnotes: (112) Must use factory big block chevy hardware and mounts.; Footnotes: (139) Must use 1975 and later model clutch linkage located at rear of engine.; Footnotes: (160) Early chassis only.; Footnotes: (213) Elite replacement gasket 27550.; Footnotes: (225) Designed for use with a Trans-Dapt throttle body spacer.; Footnotes: (4) Includes parts necessary to retain emission devices. (50 State); Footnotes: (5) With A.I.R. system.; Footnotes: (6) Modification to stock exhaust required to retain catalytic converter.; Footnotes: (208) Due to cylinder heads (aluminum) generation 6 engines, 502 BB Chevy may have clearance problems on some applications. Bottom of header flanges may hit head bolts. Notching may be necessary.; Drivetrain: 4WD; E.O. Number: D167-9; Emissions Notes: 1974 and earlier vehicles WITH A.I.R.: These headers are legal for use on '74-earlier vehicles with A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed from vehicle.
    • Liter: 4.1
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: P
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1974  GMC K25/K2500 SUBURBAN

    • Fitment_Note: Air Conditioning: Yes; Power Steering: Yes; Auto Transmission - Column: Yes; Auto Transmission - Floor: Yes; Manual Transmission - Column: Yes; Manual Transmission - Floor: Yes; Footnotes: (112) Must use factory big block chevy hardware and mounts.; Footnotes: (139) Must use 1975 and later model clutch linkage located at rear of engine.; Footnotes: (160) Early chassis only.; Footnotes: (213) Elite replacement gasket 27550.; Footnotes: (225) Designed for use with a Trans-Dapt throttle body spacer.; Footnotes: (4) Includes parts necessary to retain emission devices. (50 State); Footnotes: (5) With A.I.R. system.; Footnotes: (6) Modification to stock exhaust required to retain catalytic converter.; Footnotes: (208) Due to cylinder heads (aluminum) generation 6 engines, 502 BB Chevy may have clearance problems on some applications. Bottom of header flanges may hit head bolts. Notching may be necessary.; Drivetrain: 4WD; E.O. Number: D167-9; Emissions Notes: 1974 and earlier vehicles WITH A.I.R.: These headers are legal for use on '74-earlier vehicles with A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed from vehicle.
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: V
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1973-1974  GMC C25/C2500 SUBURBAN

    • Fitment_Note: Air Conditioning: Yes; Power Steering: Yes; Auto Transmission - Column: Yes; Auto Transmission - Floor: Yes; Manual Transmission - Column: Yes; Manual Transmission - Floor: Yes; Footnotes: (112) Must use factory big block chevy hardware and mounts.; Footnotes: (139) Must use 1975 and later model clutch linkage located at rear of engine.; Footnotes: (160) Early chassis only.; Footnotes: (213) Elite replacement gasket 27550.; Footnotes: (225) Designed for use with a Trans-Dapt throttle body spacer.; Footnotes: (4) Includes parts necessary to retain emission devices. (50 State); Footnotes: (45) Not legal for sale or use in California on pollution controlled motor vehicles.; Footnotes: (5) With A.I.R. system.; Footnotes: (6) Modification to stock exhaust required to retain catalytic converter.; Footnotes: (208) Due to cylinder heads (aluminum) generation 6 engines, 502 BB Chevy may have clearance problems on some applications. Bottom of header flanges may hit head bolts. Notching may be necessary.; Drivetrain: 2WD; E.O. Number: D167-9; Emissions Notes: 1974 and earlier vehicles WITH A.I.R.: These headers are legal for use on '74-earlier vehicles with A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed from vehicle.
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: -
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1988  CHEVROLET R20 SUBURBAN

    • Fitment_Note: Air Conditioning: Yes; Power Steering: Yes; Auto Transmission - Column: Yes; Auto Transmission - Floor: Yes; Manual Transmission - Column: Yes; Manual Transmission - Floor: Yes; Footnotes: (112) Must use factory big block chevy hardware and mounts.; Footnotes: (139) Must use 1975 and later model clutch linkage located at rear of engine.; Footnotes: (160) Early chassis only.; Footnotes: (213) Elite replacement gasket 27550.; Footnotes: (225) Designed for use with a Trans-Dapt throttle body spacer.; Footnotes: (4) Includes parts necessary to retain emission devices. (50 State); Footnotes: (45) Not legal for sale or use in California on pollution controlled motor vehicles.; Footnotes: (5) With A.I.R. system.; Footnotes: (6) Modification to stock exhaust required to retain catalytic converter.; Footnotes: (208) Due to cylinder heads (aluminum) generation 6 engines, 502 BB Chevy may have clearance problems on some applications. Bottom of header flanges may hit head bolts. Notching may be necessary.; Drivetrain: 2WD; E.O. Number: D167-9; Emissions Notes: 1974 and earlier vehicles WITH A.I.R.: These headers are legal for use on '74-earlier vehicles with A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed from vehicle.
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SCOTTSDALE
    • Engine Vin: K
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1974  CHEVROLET C20 SUBURBAN

    • Fitment_Note: Air Conditioning: Yes; Power Steering: Yes; Auto Transmission - Column: Yes; Auto Transmission - Floor: Yes; Manual Transmission - Column: Yes; Manual Transmission - Floor: Yes; Footnotes: (112) Must use factory big block chevy hardware and mounts.; Footnotes: (139) Must use 1975 and later model clutch linkage located at rear of engine.; Footnotes: (160) Early chassis only.; Footnotes: (213) Elite replacement gasket 27550.; Footnotes: (225) Designed for use with a Trans-Dapt throttle body spacer.; Footnotes: (4) Includes parts necessary to retain emission devices. (50 State); Footnotes: (45) Not legal for sale or use in California on pollution controlled motor vehicles.; Footnotes: (5) With A.I.R. system.; Footnotes: (6) Modification to stock exhaust required to retain catalytic converter.; Footnotes: (208) Due to cylinder heads (aluminum) generation 6 engines, 502 BB Chevy may have clearance problems on some applications. Bottom of header flanges may hit head bolts. Notching may be necessary.; Drivetrain: 2WD; E.O. Number: D167-9; Emissions Notes: 1974 and earlier vehicles WITH A.I.R.: These headers are legal for use on '74-earlier vehicles with A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed from vehicle.
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: V
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1968-1969  CHEVROLET C30 PICKUP

    • Fitment_Note: Air Conditioning: Yes; Power Steering: Yes; Auto Transmission - Column: Yes; Auto Transmission - Floor: Yes; Manual Transmission - Column: Yes; Manual Transmission - Floor: Yes; Footnotes: (112) Must use factory big block chevy hardware and mounts.; Footnotes: (139) Must use 1975 and later model clutch linkage located at rear of engine.; Footnotes: (160) Early chassis only.; Footnotes: (213) Elite replacement gasket 27550.; Footnotes: (4) Includes parts necessary to retain emission devices. (50 State); Footnotes: (45) Not legal for sale or use in California on pollution controlled motor vehicles.; Footnotes: (5) With A.I.R. system.; Footnotes: (6) Modification to stock exhaust required to retain catalytic converter.; Footnotes: (208) Due to cylinder heads (aluminum) generation 6 engines, 502 BB Chevy may have clearance problems on some applications. Bottom of header flanges may hit head bolts. Notching may be necessary.; Drivetrain: 2WD; E.O. Number: D167-9; Emissions Notes: 1974 and earlier vehicles WITH A.I.R.: These headers are legal for use on '74-earlier vehicles with A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed from vehicle.
    • Liter: 6.5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: Y
    • CUI: 396
    • EngineType: V8 ( 6.5 L / 396 )

    1976  GMC K25

    • Fitment_Note: Air Conditioning: Yes; Power Steering: Yes; Auto Transmission - Column: Yes; Auto Transmission - Floor: Yes; Manual Transmission - Column: No; Manual Transmission - Floor: Yes; Footnotes: (112) Must use factory big block chevy hardware and mounts.; Footnotes: (139) Must use 1975 and later model clutch linkage located at rear of engine.; Footnotes: (213) Elite replacement gasket 27550.; Footnotes: (4) Includes parts necessary to retain emission devices. (50 State); Footnotes: (5) With A.I.R. system.; Footnotes: (6) Modification to stock exhaust required to retain catalytic converter.; Drivetrain: 4WD; E.O. Number: D167-9; Emissions Notes: 1974 and earlier vehicles WITH A.I.R.: These headers are legal for use on '74-earlier vehicles with A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed from vehicle.
    • Liter: 7.4
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: Y
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1976  GMC JIMMY

    • Fitment_Note: Air Conditioning: Yes; Power Steering: Yes; Auto Transmission - Column: Yes; Auto Transmission - Floor: Yes; Manual Transmission - Column: Yes; Manual Transmission - Floor: Yes; Footnotes: (112) Must use factory big block chevy hardware and mounts.; Footnotes: (139) Must use 1975 and later model clutch linkage located at rear of engine.; Footnotes: (213) Elite replacement gasket 27550.; Footnotes: (225) Designed for use with a Trans-Dapt throttle body spacer.; Footnotes: (4) Includes parts necessary to retain emission devices. (50 State); Footnotes: (45) Not legal for sale or use in California on pollution controlled motor vehicles.; Footnotes: (5) With A.I.R. system.; Footnotes: (6) Modification to stock exhaust required to retain catalytic converter.; Footnotes: (208) Due to cylinder heads (aluminum) generation 6 engines, 502 BB Chevy may have clearance problems on some applications. Bottom of header flanges may hit head bolts. Notching may be necessary.; Drivetrain: 2WD; E.O. Number: D167-27; Emissions Notes: 1974 and earlier vehicles WITH A.I.R.: These headers are legal for use on '74-earlier vehicles with A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed from vehicle.; 1/2 Ton, Full-sized only.
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: V
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1976-1977  GMC K25 SUBURBAN

    • Fitment_Note: Air Conditioning: Yes; Power Steering: Yes; Auto Transmission - Column: Yes; Auto Transmission - Floor: Yes; Manual Transmission - Column: Yes; Manual Transmission - Floor: Yes; Footnotes: (112) Must use factory big block chevy hardware and mounts.; Footnotes: (139) Must use 1975 and later model clutch linkage located at rear of engine.; Footnotes: (160) Early chassis only.; Footnotes: (213) Elite replacement gasket 27550.; Footnotes: (225) Designed for use with a Trans-Dapt throttle body spacer.; Footnotes: (4) Includes parts necessary to retain emission devices. (50 State); Footnotes: (5) With A.I.R. system.; Footnotes: (6) Modification to stock exhaust required to retain catalytic converter.; Footnotes: (208) Due to cylinder heads (aluminum) generation 6 engines, 502 BB Chevy may have clearance problems on some applications. Bottom of header flanges may hit head bolts. Notching may be necessary.; Drivetrain: 4WD; E.O. Number: D167-9; Emissions Notes: 1974 and earlier vehicles WITH A.I.R.: These headers are legal for use on '74-earlier vehicles with A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed from vehicle.
    • Liter: 4.8
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: T
    • CUI: 292
    • EngineType: L6 ( 4.8 L / 292 )

    1968  GMC K25/K2500 SUBURBAN

    • Fitment_Note: Air Conditioning: Yes; Power Steering: Yes; Auto Transmission - Column: Yes; Auto Transmission - Floor: Yes; Manual Transmission - Column: Yes; Manual Transmission - Floor: Yes; Footnotes: (112) Must use factory big block chevy hardware and mounts.; Footnotes: (139) Must use 1975 and later model clutch linkage located at rear of engine.; Footnotes: (160) Early chassis only.; Footnotes: (213) Elite replacement gasket 27550.; Footnotes: (225) Designed for use with a Trans-Dapt throttle body spacer.; Footnotes: (4) Includes parts necessary to retain emission devices. (50 State); Footnotes: (5) With A.I.R. system.; Footnotes: (6) Modification to stock exhaust required to retain catalytic converter.; Footnotes: (208) Due to cylinder heads (aluminum) generation 6 engines, 502 BB Chevy may have clearance problems on some applications. Bottom of header flanges may hit head bolts. Notching may be necessary.; Drivetrain: 4WD; E.O. Number: D167-9; Emissions Notes: 1974 and earlier vehicles WITH A.I.R.: These headers are legal for use on '74-earlier vehicles with A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed from vehicle.
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: -
    • CUI: 351
    • EngineType: V6 ( 5.7 L / 351 )

    1980  CHEVROLET C10

    • Liter: 7.4
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: CHEYENNE
    • Engine Vin: W
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1987  CHEVROLET V20 SUBURBAN

    • Fitment_Note: Air Conditioning: Yes; Power Steering: Yes; Auto Transmission - Column: Yes; Auto Transmission - Floor: Yes; Manual Transmission - Column: Yes; Manual Transmission - Floor: Yes; Footnotes: (112) Must use factory big block chevy hardware and mounts.; Footnotes: (139) Must use 1975 and later model clutch linkage located at rear of engine.; Footnotes: (160) Early chassis only.; Footnotes: (213) Elite replacement gasket 27550.; Footnotes: (225) Designed for use with a Trans-Dapt throttle body spacer.; Footnotes: (4) Includes parts necessary to retain emission devices. (50 State); Footnotes: (5) With A.I.R. system.; Footnotes: (6) Modification to stock exhaust required to retain catalytic converter.; Footnotes: (208) Due to cylinder heads (aluminum) generation 6 engines, 502 BB Chevy may have clearance problems on some applications. Bottom of header flanges may hit head bolts. Notching may be necessary.; Drivetrain: 4WD; E.O. Number: D167-9; Emissions Notes: 1974 and earlier vehicles WITH A.I.R.: These headers are legal for use on '74-earlier vehicles with A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed from vehicle.
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: CUSTOM DELUXE
    • Engine Vin: K
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1968-1969  CHEVROLET K20 SUBURBAN

    • Fitment_Note: Air Conditioning: Yes; Power Steering: Yes; Auto Transmission - Column: Yes; Auto Transmission - Floor: Yes; Manual Transmission - Column: Yes; Manual Transmission - Floor: Yes; Footnotes: (112) Must use factory big block chevy hardware and mounts.; Footnotes: (139) Must use 1975 and later model clutch linkage located at rear of engine.; Footnotes: (160) Early chassis only.; Footnotes: (213) Elite replacement gasket 27550.; Footnotes: (225) Designed for use with a Trans-Dapt throttle body spacer.; Footnotes: (4) Includes parts necessary to retain emission devices. (50 State); Footnotes: (5) With A.I.R. system.; Footnotes: (6) Modification to stock exhaust required to retain catalytic converter.; Footnotes: (208) Due to cylinder heads (aluminum) generation 6 engines, 502 BB Chevy may have clearance problems on some applications. Bottom of header flanges may hit head bolts. Notching may be necessary.; Drivetrain: 4WD; E.O. Number: D167-9; Emissions Notes: 1974 and earlier vehicles WITH A.I.R.: These headers are legal for use on '74-earlier vehicles with A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed from vehicle.
    • Liter: 6.5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: Y
    • CUI: 396
    • EngineType: V8 ( 6.5 L / 396 )

    1980  CHEVROLET C20 SUBURBAN

    • Fitment_Note: Air Conditioning: Yes; Power Steering: Yes; Auto Transmission - Column: Yes; Auto Transmission - Floor: Yes; Manual Transmission - Column: Yes; Manual Transmission - Floor: Yes; Footnotes: (112) Must use factory big block chevy hardware and mounts.; Footnotes: (139) Must use 1975 and later model clutch linkage located at rear of engine.; Footnotes: (160) Early chassis only.; Footnotes: (213) Elite replacement gasket 27550.; Footnotes: (225) Designed for use with a Trans-Dapt throttle body spacer.; Footnotes: (4) Includes parts necessary to retain emission devices. (50 State); Footnotes: (45) Not legal for sale or use in California on pollution controlled motor vehicles.; Footnotes: (5) With A.I.R. system.; Footnotes: (6) Modification to stock exhaust required to retain catalytic converter.; Footnotes: (208) Due to cylinder heads (aluminum) generation 6 engines, 502 BB Chevy may have clearance problems on some applications. Bottom of header flanges may hit head bolts. Notching may be necessary.; Drivetrain: 2WD; E.O. Number: D167-9; Emissions Notes: 1974 and earlier vehicles WITH A.I.R.: These headers are legal for use on '74-earlier vehicles with A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed from vehicle.
    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: CUSTOM DELUXE
    • Engine Vin: G
    • CUI: 305
    • EngineType: V8 ( 5 L / 305 )

    1973  GMC C25/C2500 SUBURBAN

    • Fitment_Note: Air Conditioning: Yes; Power Steering: Yes; Auto Transmission - Column: Yes; Auto Transmission - Floor: Yes; Manual Transmission - Column: Yes; Manual Transmission - Floor: Yes; Footnotes: (112) Must use factory big block chevy hardware and mounts.; Footnotes: (139) Must use 1975 and later model clutch linkage located at rear of engine.; Footnotes: (160) Early chassis only.; Footnotes: (213) Elite replacement gasket 27550.; Footnotes: (225) Designed for use with a Trans-Dapt throttle body spacer.; Footnotes: (4) Includes parts necessary to retain emission devices. (50 State); Footnotes: (45) Not legal for sale or use in California on pollution controlled motor vehicles.; Footnotes: (5) With A.I.R. system.; Footnotes: (6) Modification to stock exhaust required to retain catalytic converter.; Footnotes: (208) Due to cylinder heads (aluminum) generation 6 engines, 502 BB Chevy may have clearance problems on some applications. Bottom of header flanges may hit head bolts. Notching may be necessary.; Drivetrain: 2WD; E.O. Number: D167-9; Emissions Notes: 1974 and earlier vehicles WITH A.I.R.: These headers are legal for use on '74-earlier vehicles with A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed from vehicle.
    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: X
    • CUI: 307
    • EngineType: V8 ( 5 L / 307 )

    1976  GMC K25 SUBURBAN

    • Fitment_Note: Air Conditioning: Yes; Power Steering: Yes; Auto Transmission - Column: Yes; Auto Transmission - Floor: Yes; Manual Transmission - Column: Yes; Manual Transmission - Floor: Yes; Footnotes: (112) Must use factory big block chevy hardware and mounts.; Footnotes: (139) Must use 1975 and later model clutch linkage located at rear of engine.; Footnotes: (160) Early chassis only.; Footnotes: (213) Elite replacement gasket 27550.; Footnotes: (225) Designed for use with a Trans-Dapt throttle body spacer.; Footnotes: (4) Includes parts necessary to retain emission devices. (50 State); Footnotes: (5) With A.I.R. system.; Footnotes: (6) Modification to stock exhaust required to retain catalytic converter.; Footnotes: (208) Due to cylinder heads (aluminum) generation 6 engines, 502 BB Chevy may have clearance problems on some applications. Bottom of header flanges may hit head bolts. Notching may be necessary.; Drivetrain: 4WD; E.O. Number: D167-9; Emissions Notes: 1974 and earlier vehicles WITH A.I.R.: These headers are legal for use on '74-earlier vehicles with A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed from vehicle.
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: V
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1988  CHEVROLET R20 SUBURBAN

    • Fitment_Note: Air Conditioning: Yes; Power Steering: Yes; Auto Transmission - Column: Yes; Auto Transmission - Floor: Yes; Manual Transmission - Column: Yes; Manual Transmission - Floor: Yes; Footnotes: (112) Must use factory big block chevy hardware and mounts.; Footnotes: (139) Must use 1975 and later model clutch linkage located at rear of engine.; Footnotes: (160) Early chassis only.; Footnotes: (213) Elite replacement gasket 27550.; Footnotes: (225) Designed for use with a Trans-Dapt throttle body spacer.; Footnotes: (4) Includes parts necessary to retain emission devices. (50 State); Footnotes: (45) Not legal for sale or use in California on pollution controlled motor vehicles.; Footnotes: (5) With A.I.R. system.; Footnotes: (6) Modification to stock exhaust required to retain catalytic converter.; Footnotes: (208) Due to cylinder heads (aluminum) generation 6 engines, 502 BB Chevy may have clearance problems on some applications. Bottom of header flanges may hit head bolts. Notching may be necessary.; Drivetrain: 2WD; E.O. Number: D167-9; Emissions Notes: 1974 and earlier vehicles WITH A.I.R.: These headers are legal for use on '74-earlier vehicles with A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed from vehicle.
    • Liter: 6.2
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SCOTTSDALE
    • Engine Vin: J
    • CUI: 379
    • EngineType: V8 ( 6.2 L / 379 )

    1968-1969  CHEVROLET C20 PICKUP

    • Fitment_Note: Air Conditioning: Yes; Power Steering: Yes; Auto Transmission - Column: Yes; Auto Transmission - Floor: Yes; Manual Transmission - Column: Yes; Manual Transmission - Floor: Yes; Footnotes: (112) Must use factory big block chevy hardware and mounts.; Footnotes: (139) Must use 1975 and later model clutch linkage located at rear of engine.; Footnotes: (160) Early chassis only.; Footnotes: (213) Elite replacement gasket 27550.; Footnotes: (4) Includes parts necessary to retain emission devices. (50 State); Footnotes: (45) Not legal for sale or use in California on pollution controlled motor vehicles.; Footnotes: (5) With A.I.R. system.; Footnotes: (6) Modification to stock exhaust required to retain catalytic converter.; Footnotes: (208) Due to cylinder heads (aluminum) generation 6 engines, 502 BB Chevy may have clearance problems on some applications. Bottom of header flanges may hit head bolts. Notching may be necessary.; Drivetrain: 2WD; E.O. Number: D167-9; Emissions Notes: 1974 and earlier vehicles WITH A.I.R.: These headers are legal for use on '74-earlier vehicles with A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed from vehicle.
    • Liter: 6.5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: E
    • CUI: 396
    • EngineType: V8 ( 6.5 L / 396 )

    1980  CHEVROLET C20 SUBURBAN

    • Fitment_Note: Air Conditioning: Yes; Power Steering: Yes; Auto Transmission - Column: Yes; Auto Transmission - Floor: Yes; Manual Transmission - Column: Yes; Manual Transmission - Floor: Yes; Footnotes: (112) Must use factory big block chevy hardware and mounts.; Footnotes: (139) Must use 1975 and later model clutch linkage located at rear of engine.; Footnotes: (160) Early chassis only.; Footnotes: (213) Elite replacement gasket 27550.; Footnotes: (225) Designed for use with a Trans-Dapt throttle body spacer.; Footnotes: (4) Includes parts necessary to retain emission devices. (50 State); Footnotes: (45) Not legal for sale or use in California on pollution controlled motor vehicles.; Footnotes: (5) With A.I.R. system.; Footnotes: (6) Modification to stock exhaust required to retain catalytic converter.; Footnotes: (208) Due to cylinder heads (aluminum) generation 6 engines, 502 BB Chevy may have clearance problems on some applications. Bottom of header flanges may hit head bolts. Notching may be necessary.; Drivetrain: 2WD; E.O. Number: D167-9; Emissions Notes: 1974 and earlier vehicles WITH A.I.R.: These headers are legal for use on '74-earlier vehicles with A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed from vehicle.
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: CUSTOM DELUXE
    • Engine Vin: M
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1976-1978  GMC C25

    • Fitment_Note: Air Conditioning: Yes; Power Steering: Yes; Auto Transmission - Column: Yes; Auto Transmission - Floor: Yes; Manual Transmission - Column: Yes; Manual Transmission - Floor: Yes; Footnotes: (112) Must use factory big block chevy hardware and mounts.; Footnotes: (139) Must use 1975 and later model clutch linkage located at rear of engine.; Footnotes: (160) Early chassis only.; Footnotes: (213) Elite replacement gasket 27550.; Footnotes: (4) Includes parts necessary to retain emission devices. (50 State); Footnotes: (45) Not legal for sale or use in California on pollution controlled motor vehicles.; Footnotes: (5) With A.I.R. system.; Footnotes: (6) Modification to stock exhaust required to retain catalytic converter.; Footnotes: (208) Due to cylinder heads (aluminum) generation 6 engines, 502 BB Chevy may have clearance problems on some applications. Bottom of header flanges may hit head bolts. Notching may be necessary.; Drivetrain: 2WD; E.O. Number: D167-9; Emissions Notes: 1974 and earlier vehicles WITH A.I.R.: These headers are legal for use on '74-earlier vehicles with A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed from vehicle.
    • Liter: 7.4
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: S
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1976-1980  CHEVROLET C10

    • Liter: 7.4
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: CHEYENNE
    • Engine Vin: S
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1968  GMC K25/K2500 SUBURBAN

    • Fitment_Note: Air Conditioning: Yes; Power Steering: Yes; Auto Transmission - Column: Yes; Auto Transmission - Floor: Yes; Manual Transmission - Column: Yes; Manual Transmission - Floor: Yes; Footnotes: (112) Must use factory big block chevy hardware and mounts.; Footnotes: (139) Must use 1975 and later model clutch linkage located at rear of engine.; Footnotes: (160) Early chassis only.; Footnotes: (213) Elite replacement gasket 27550.; Footnotes: (225) Designed for use with a Trans-Dapt throttle body spacer.; Footnotes: (4) Includes parts necessary to retain emission devices. (50 State); Footnotes: (5) With A.I.R. system.; Footnotes: (6) Modification to stock exhaust required to retain catalytic converter.; Footnotes: (208) Due to cylinder heads (aluminum) generation 6 engines, 502 BB Chevy may have clearance problems on some applications. Bottom of header flanges may hit head bolts. Notching may be necessary.; Drivetrain: 4WD; E.O. Number: D167-9; Emissions Notes: 1974 and earlier vehicles WITH A.I.R.: These headers are legal for use on '74-earlier vehicles with A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed from vehicle.
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: -
    • CUI: 351
    • EngineType: V6 ( 5.7 L / 351 )

    1968  GMC K25/K2500 SUBURBAN

    • Fitment_Note: Air Conditioning: Yes; Power Steering: Yes; Auto Transmission - Column: Yes; Auto Transmission - Floor: Yes; Manual Transmission - Column: Yes; Manual Transmission - Floor: Yes; Footnotes: (112) Must use factory big block chevy hardware and mounts.; Footnotes: (139) Must use 1975 and later model clutch linkage located at rear of engine.; Footnotes: (160) Early chassis only.; Footnotes: (213) Elite replacement gasket 27550.; Footnotes: (225) Designed for use with a Trans-Dapt throttle body spacer.; Footnotes: (4) Includes parts necessary to retain emission devices. (50 State); Footnotes: (5) With A.I.R. system.; Footnotes: (6) Modification to stock exhaust required to retain catalytic converter.; Footnotes: (208) Due to cylinder heads (aluminum) generation 6 engines, 502 BB Chevy may have clearance problems on some applications. Bottom of header flanges may hit head bolts. Notching may be necessary.; Drivetrain: 4WD; E.O. Number: D167-9; Emissions Notes: 1974 and earlier vehicles WITH A.I.R.: These headers are legal for use on '74-earlier vehicles with A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed from vehicle.
    • Liter: 5.3
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: -
    • CUI: 327
    • EngineType: V8 ( 5.3 L / 327 )

    1976  GMC JIMMY

    • Fitment_Note: Air Conditioning: Yes; Power Steering: Yes; Auto Transmission - Column: Yes; Auto Transmission - Floor: Yes; Manual Transmission - Column: Yes; Manual Transmission - Floor: Yes; Footnotes: (112) Must use factory big block chevy hardware and mounts.; Footnotes: (139) Must use 1975 and later model clutch linkage located at rear of engine.; Footnotes: (213) Elite replacement gasket 27550.; Footnotes: (225) Designed for use with a Trans-Dapt throttle body spacer.; Footnotes: (4) Includes parts necessary to retain emission devices. (50 State); Footnotes: (45) Not legal for sale or use in California on pollution controlled motor vehicles.; Footnotes: (5) With A.I.R. system.; Footnotes: (6) Modification to stock exhaust required to retain catalytic converter.; Footnotes: (208) Due to cylinder heads (aluminum) generation 6 engines, 502 BB Chevy may have clearance problems on some applications. Bottom of header flanges may hit head bolts. Notching may be necessary.; Drivetrain: 2WD; E.O. Number: D167-27; Emissions Notes: 1974 and earlier vehicles WITH A.I.R.: These headers are legal for use on '74-earlier vehicles with A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed from vehicle.; 1/2 Ton, Full-sized only.
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: L
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1968  CHEVROLET K20 SUBURBAN

    • Fitment_Note: Air Conditioning: Yes; Power Steering: Yes; Auto Transmission - Column: Yes; Auto Transmission - Floor: Yes; Manual Transmission - Column: Yes; Manual Transmission - Floor: Yes; Footnotes: (112) Must use factory big block chevy hardware and mounts.; Footnotes: (139) Must use 1975 and later model clutch linkage located at rear of engine.; Footnotes: (160) Early chassis only.; Footnotes: (213) Elite replacement gasket 27550.; Footnotes: (225) Designed for use with a Trans-Dapt throttle body spacer.; Footnotes: (4) Includes parts necessary to retain emission devices. (50 State); Footnotes: (5) With A.I.R. system.; Footnotes: (6) Modification to stock exhaust required to retain catalytic converter.; Footnotes: (208) Due to cylinder heads (aluminum) generation 6 engines, 502 BB Chevy may have clearance problems on some applications. Bottom of header flanges may hit head bolts. Notching may be necessary.; Drivetrain: 4WD; E.O. Number: D167-9; Emissions Notes: 1974 and earlier vehicles WITH A.I.R.: These headers are legal for use on '74-earlier vehicles with A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed from vehicle.
    • Liter: 5.3
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: E
    • CUI: 327
    • EngineType: V8 ( 5.3 L / 327 )

    1977-1978  GMC K25

    • Fitment_Note: Air Conditioning: Yes; Power Steering: Yes; Auto Transmission - Column: Yes; Auto Transmission - Floor: Yes; Manual Transmission - Column: No; Manual Transmission - Floor: Yes; Footnotes: (112) Must use factory big block chevy hardware and mounts.; Footnotes: (139) Must use 1975 and later model clutch linkage located at rear of engine.; Footnotes: (213) Elite replacement gasket 27550.; Footnotes: (4) Includes parts necessary to retain emission devices. (50 State); Footnotes: (5) With A.I.R. system.; Footnotes: (6) Modification to stock exhaust required to retain catalytic converter.; Drivetrain: 4WD; E.O. Number: D167-9; Emissions Notes: 1974 and earlier vehicles WITH A.I.R.: These headers are legal for use on '74-earlier vehicles with A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed from vehicle.
    • Liter: 7.4
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: S
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1987  CHEVROLET R20 SUBURBAN

    • Fitment_Note: Air Conditioning: Yes; Power Steering: Yes; Auto Transmission - Column: Yes; Auto Transmission - Floor: Yes; Manual Transmission - Column: Yes; Manual Transmission - Floor: Yes; Footnotes: (112) Must use factory big block chevy hardware and mounts.; Footnotes: (139) Must use 1975 and later model clutch linkage located at rear of engine.; Footnotes: (160) Early chassis only.; Footnotes: (213) Elite replacement gasket 27550.; Footnotes: (225) Designed for use with a Trans-Dapt throttle body spacer.; Footnotes: (4) Includes parts necessary to retain emission devices. (50 State); Footnotes: (45) Not legal for sale or use in California on pollution controlled motor vehicles.; Footnotes: (5) With A.I.R. system.; Footnotes: (6) Modification to stock exhaust required to retain catalytic converter.; Footnotes: (208) Due to cylinder heads (aluminum) generation 6 engines, 502 BB Chevy may have clearance problems on some applications. Bottom of header flanges may hit head bolts. Notching may be necessary.; Drivetrain: 2WD; E.O. Number: D167-9; Emissions Notes: 1974 and earlier vehicles WITH A.I.R.: These headers are legal for use on '74-earlier vehicles with A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed from vehicle.
    • Liter: 7.4
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: CUSTOM DELUXE
    • Engine Vin: N
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1976-1977  CHEVROLET P30

    • Fitment_Note: Air Conditioning: Yes; Power Steering: Yes; Auto Transmission - Column: Yes; Auto Transmission - Floor: Yes; Manual Transmission - Column: No; Manual Transmission - Floor: No; Footnotes: (225) Designed for use with a Trans-Dapt throttle body spacer.; Footnotes: (38) 16 gauge tubing.; Footnotes: (4) Includes parts necessary to retain emission devices. (50 State); Footnotes: (42) Square port hedder.; Footnotes: (5) With A.I.R. system.; Footnotes: (6) Modification to stock exhaust required to retain catalytic converter.; E.O. Number: D167-9; CHEVROLET Class A Motorhomes with a 396-454 BB Chevy
    • Liter: 7.4
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: Y
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1980  CHEVROLET C20 SUBURBAN

    • Fitment_Note: Air Conditioning: Yes; Power Steering: Yes; Auto Transmission - Column: Yes; Auto Transmission - Floor: Yes; Manual Transmission - Column: Yes; Manual Transmission - Floor: Yes; Footnotes: (112) Must use factory big block chevy hardware and mounts.; Footnotes: (139) Must use 1975 and later model clutch linkage located at rear of engine.; Footnotes: (160) Early chassis only.; Footnotes: (213) Elite replacement gasket 27550.; Footnotes: (225) Designed for use with a Trans-Dapt throttle body spacer.; Footnotes: (4) Includes parts necessary to retain emission devices. (50 State); Footnotes: (45) Not legal for sale or use in California on pollution controlled motor vehicles.; Footnotes: (5) With A.I.R. system.; Footnotes: (6) Modification to stock exhaust required to retain catalytic converter.; Footnotes: (208) Due to cylinder heads (aluminum) generation 6 engines, 502 BB Chevy may have clearance problems on some applications. Bottom of header flanges may hit head bolts. Notching may be necessary.; Drivetrain: 2WD; E.O. Number: D167-9; Emissions Notes: 1974 and earlier vehicles WITH A.I.R.: These headers are legal for use on '74-earlier vehicles with A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed from vehicle.
    • Liter: 6.6
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: CUSTOM DELUXE
    • Engine Vin: X
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1973-1974  GMC K25/K2500 SUBURBAN

    • Fitment_Note: Air Conditioning: Yes; Power Steering: Yes; Auto Transmission - Column: Yes; Auto Transmission - Floor: Yes; Manual Transmission - Column: Yes; Manual Transmission - Floor: Yes; Footnotes: (112) Must use factory big block chevy hardware and mounts.; Footnotes: (139) Must use 1975 and later model clutch linkage located at rear of engine.; Footnotes: (160) Early chassis only.; Footnotes: (213) Elite replacement gasket 27550.; Footnotes: (225) Designed for use with a Trans-Dapt throttle body spacer.; Footnotes: (4) Includes parts necessary to retain emission devices. (50 State); Footnotes: (5) With A.I.R. system.; Footnotes: (6) Modification to stock exhaust required to retain catalytic converter.; Footnotes: (208) Due to cylinder heads (aluminum) generation 6 engines, 502 BB Chevy may have clearance problems on some applications. Bottom of header flanges may hit head bolts. Notching may be necessary.; Drivetrain: 4WD; E.O. Number: D167-9; Emissions Notes: 1974 and earlier vehicles WITH A.I.R.: These headers are legal for use on '74-earlier vehicles with A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed from vehicle.
    • Liter: 4.1
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: Q
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1973-1974  CHEVROLET C20 SUBURBAN

    • Fitment_Note: Air Conditioning: Yes; Power Steering: Yes; Auto Transmission - Column: Yes; Auto Transmission - Floor: Yes; Manual Transmission - Column: Yes; Manual Transmission - Floor: Yes; Footnotes: (112) Must use factory big block chevy hardware and mounts.; Footnotes: (139) Must use 1975 and later model clutch linkage located at rear of engine.; Footnotes: (160) Early chassis only.; Footnotes: (213) Elite replacement gasket 27550.; Footnotes: (225) Designed for use with a Trans-Dapt throttle body spacer.; Footnotes: (4) Includes parts necessary to retain emission devices. (50 State); Footnotes: (45) Not legal for sale or use in California on pollution controlled motor vehicles.; Footnotes: (5) With A.I.R. system.; Footnotes: (6) Modification to stock exhaust required to retain catalytic converter.; Footnotes: (208) Due to cylinder heads (aluminum) generation 6 engines, 502 BB Chevy may have clearance problems on some applications. Bottom of header flanges may hit head bolts. Notching may be necessary.; Drivetrain: 2WD; E.O. Number: D167-9; Emissions Notes: 1974 and earlier vehicles WITH A.I.R.: These headers are legal for use on '74-earlier vehicles with A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed from vehicle.
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: -
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1969  CHEVROLET K20 SUBURBAN

    • Fitment_Note: Air Conditioning: Yes; Power Steering: Yes; Auto Transmission - Column: Yes; Auto Transmission - Floor: Yes; Manual Transmission - Column: Yes; Manual Transmission - Floor: Yes; Footnotes: (112) Must use factory big block chevy hardware and mounts.; Footnotes: (139) Must use 1975 and later model clutch linkage located at rear of engine.; Footnotes: (160) Early chassis only.; Footnotes: (213) Elite replacement gasket 27550.; Footnotes: (225) Designed for use with a Trans-Dapt throttle body spacer.; Footnotes: (4) Includes parts necessary to retain emission devices. (50 State); Footnotes: (5) With A.I.R. system.; Footnotes: (6) Modification to stock exhaust required to retain catalytic converter.; Footnotes: (208) Due to cylinder heads (aluminum) generation 6 engines, 502 BB Chevy may have clearance problems on some applications. Bottom of header flanges may hit head bolts. Notching may be necessary.; Drivetrain: 4WD; E.O. Number: D167-9; Emissions Notes: 1974 and earlier vehicles WITH A.I.R.: These headers are legal for use on '74-earlier vehicles with A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed from vehicle.
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: E
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1982-1986  GMC C2500 SUBURBAN

    • Fitment_Note: Air Conditioning: Yes; Power Steering: Yes; Auto Transmission - Column: Yes; Auto Transmission - Floor: Yes; Manual Transmission - Column: Yes; Manual Transmission - Floor: Yes; Footnotes: (112) Must use factory big block chevy hardware and mounts.; Footnotes: (139) Must use 1975 and later model clutch linkage located at rear of engine.; Footnotes: (160) Early chassis only.; Footnotes: (213) Elite replacement gasket 27550.; Footnotes: (225) Designed for use with a Trans-Dapt throttle body spacer.; Footnotes: (4) Includes parts necessary to retain emission devices. (50 State); Footnotes: (45) Not legal for sale or use in California on pollution controlled motor vehicles.; Footnotes: (5) With A.I.R. system.; Footnotes: (6) Modification to stock exhaust required to retain catalytic converter.; Footnotes: (208) Due to cylinder heads (aluminum) generation 6 engines, 502 BB Chevy may have clearance problems on some applications. Bottom of header flanges may hit head bolts. Notching may be necessary.; Drivetrain: 2WD; E.O. Number: D167-9; Emissions Notes: 1974 and earlier vehicles WITH A.I.R.: These headers are legal for use on '74-earlier vehicles with A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed from vehicle.
    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: H
    • CUI: 305
    • EngineType: V8 ( 5 L / 305 )

    1973-1974  GMC C25/C2500 SUBURBAN

    • Fitment_Note: Air Conditioning: Yes; Power Steering: Yes; Auto Transmission - Column: Yes; Auto Transmission - Floor: Yes; Manual Transmission - Column: Yes; Manual Transmission - Floor: Yes; Footnotes: (112) Must use factory big block chevy hardware and mounts.; Footnotes: (139) Must use 1975 and later model clutch linkage located at rear of engine.; Footnotes: (160) Early chassis only.; Footnotes: (213) Elite replacement gasket 27550.; Footnotes: (225) Designed for use with a Trans-Dapt throttle body spacer.; Footnotes: (4) Includes parts necessary to retain emission devices. (50 State); Footnotes: (45) Not legal for sale or use in California on pollution controlled motor vehicles.; Footnotes: (5) With A.I.R. system.; Footnotes: (6) Modification to stock exhaust required to retain catalytic converter.; Footnotes: (208) Due to cylinder heads (aluminum) generation 6 engines, 502 BB Chevy may have clearance problems on some applications. Bottom of header flanges may hit head bolts. Notching may be necessary.; Drivetrain: 2WD; E.O. Number: D167-9; Emissions Notes: 1974 and earlier vehicles WITH A.I.R.: These headers are legal for use on '74-earlier vehicles with A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed from vehicle.
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: -
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1977-1979  CHEVROLET C20 SUBURBAN

    • Fitment_Note: Air Conditioning: Yes; Power Steering: Yes; Auto Transmission - Column: Yes; Auto Transmission - Floor: Yes; Manual Transmission - Column: Yes; Manual Transmission - Floor: Yes; Footnotes: (112) Must use factory big block chevy hardware and mounts.; Footnotes: (139) Must use 1975 and later model clutch linkage located at rear of engine.; Footnotes: (160) Early chassis only.; Footnotes: (213) Elite replacement gasket 27550.; Footnotes: (225) Designed for use with a Trans-Dapt throttle body spacer.; Footnotes: (4) Includes parts necessary to retain emission devices. (50 State); Footnotes: (45) Not legal for sale or use in California on pollution controlled motor vehicles.; Footnotes: (5) With A.I.R. system.; Footnotes: (6) Modification to stock exhaust required to retain catalytic converter.; Footnotes: (208) Due to cylinder heads (aluminum) generation 6 engines, 502 BB Chevy may have clearance problems on some applications. Bottom of header flanges may hit head bolts. Notching may be necessary.; Drivetrain: 2WD; E.O. Number: D167-9; Emissions Notes: 1974 and earlier vehicles WITH A.I.R.: These headers are legal for use on '74-earlier vehicles with A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed from vehicle.
    • Liter: 6.6
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: CUSTOM DELUXE
    • Engine Vin: R
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1975  CHEVROLET C10

    • Liter: 7.4
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SCOTTSDALE
    • Engine Vin: Z
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1990-1995  CHEVROLET P30

    • Fitment_Note: Air Conditioning: Yes; Power Steering: Yes; Auto Transmission - Column: Yes; Auto Transmission - Floor: Yes; Manual Transmission - Column: No; Manual Transmission - Floor: No; Footnotes: (225) Designed for use with a Trans-Dapt throttle body spacer.; Footnotes: (38) 16 gauge tubing.; Footnotes: (4) Includes parts necessary to retain emission devices. (50 State); Footnotes: (42) Square port hedder.; Footnotes: (5) With A.I.R. system.; Footnotes: (6) Modification to stock exhaust required to retain catalytic converter.; E.O. Number: D167-9; CHEVROLET Class A Motorhomes with a 396-454 BB Chevy
    • Liter: 7.4
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: N
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1987  CHEVROLET V20 SUBURBAN

    • Fitment_Note: Air Conditioning: Yes; Power Steering: Yes; Auto Transmission - Column: Yes; Auto Transmission - Floor: Yes; Manual Transmission - Column: Yes; Manual Transmission - Floor: Yes; Footnotes: (112) Must use factory big block chevy hardware and mounts.; Footnotes: (139) Must use 1975 and later model clutch linkage located at rear of engine.; Footnotes: (160) Early chassis only.; Footnotes: (213) Elite replacement gasket 27550.; Footnotes: (225) Designed for use with a Trans-Dapt throttle body spacer.; Footnotes: (4) Includes parts necessary to retain emission devices. (50 State); Footnotes: (5) With A.I.R. system.; Footnotes: (6) Modification to stock exhaust required to retain catalytic converter.; Footnotes: (208) Due to cylinder heads (aluminum) generation 6 engines, 502 BB Chevy may have clearance problems on some applications. Bottom of header flanges may hit head bolts. Notching may be necessary.; Drivetrain: 4WD; E.O. Number: D167-9; Emissions Notes: 1974 and earlier vehicles WITH A.I.R.: These headers are legal for use on '74-earlier vehicles with A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed from vehicle.
    • Liter: 7.4
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: CUSTOM DELUXE
    • Engine Vin: N
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1977-1979  CHEVROLET C20 SUBURBAN

    • Fitment_Note: Air Conditioning: Yes; Power Steering: Yes; Auto Transmission - Column: Yes; Auto Transmission - Floor: Yes; Manual Transmission - Column: Yes; Manual Transmission - Floor: Yes; Footnotes: (112) Must use factory big block chevy hardware and mounts.; Footnotes: (139) Must use 1975 and later model clutch linkage located at rear of engine.; Footnotes: (160) Early chassis only.; Footnotes: (213) Elite replacement gasket 27550.; Footnotes: (225) Designed for use with a Trans-Dapt throttle body spacer.; Footnotes: (4) Includes parts necessary to retain emission devices. (50 State); Footnotes: (45) Not legal for sale or use in California on pollution controlled motor vehicles.; Footnotes: (5) With A.I.R. system.; Footnotes: (6) Modification to stock exhaust required to retain catalytic converter.; Footnotes: (208) Due to cylinder heads (aluminum) generation 6 engines, 502 BB Chevy may have clearance problems on some applications. Bottom of header flanges may hit head bolts. Notching may be necessary.; Drivetrain: 2WD; E.O. Number: D167-9; Emissions Notes: 1974 and earlier vehicles WITH A.I.R.: These headers are legal for use on '74-earlier vehicles with A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed from vehicle.
    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: CUSTOM DELUXE
    • Engine Vin: U
    • CUI: 305
    • EngineType: V8 ( 5 L / 305 )

    1968  GMC K25/K2500 SUBURBAN

    • Fitment_Note: Air Conditioning: Yes; Power Steering: Yes; Auto Transmission - Column: Yes; Auto Transmission - Floor: Yes; Manual Transmission - Column: Yes; Manual Transmission - Floor: Yes; Footnotes: (112) Must use factory big block chevy hardware and mounts.; Footnotes: (139) Must use 1975 and later model clutch linkage located at rear of engine.; Footnotes: (160) Early chassis only.; Footnotes: (213) Elite replacement gasket 27550.; Footnotes: (225) Designed for use with a Trans-Dapt throttle body spacer.; Footnotes: (4) Includes parts necessary to retain emission devices. (50 State); Footnotes: (5) With A.I.R. system.; Footnotes: (6) Modification to stock exhaust required to retain catalytic converter.; Footnotes: (208) Due to cylinder heads (aluminum) generation 6 engines, 502 BB Chevy may have clearance problems on some applications. Bottom of header flanges may hit head bolts. Notching may be necessary.; Drivetrain: 4WD; E.O. Number: D167-9; Emissions Notes: 1974 and earlier vehicles WITH A.I.R.: These headers are legal for use on '74-earlier vehicles with A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed from vehicle.
    • Liter: 5.3
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: E
    • CUI: 327
    • EngineType: V8 ( 5.3 L / 327 )

    1968  GMC K25/K2500 SUBURBAN

    • Fitment_Note: Air Conditioning: Yes; Power Steering: Yes; Auto Transmission - Column: Yes; Auto Transmission - Floor: Yes; Manual Transmission - Column: Yes; Manual Transmission - Floor: Yes; Footnotes: (112) Must use factory big block chevy hardware and mounts.; Footnotes: (139) Must use 1975 and later model clutch linkage located at rear of engine.; Footnotes: (160) Early chassis only.; Footnotes: (213) Elite replacement gasket 27550.; Footnotes: (225) Designed for use with a Trans-Dapt throttle body spacer.; Footnotes: (4) Includes parts necessary to retain emission devices. (50 State); Footnotes: (5) With A.I.R. system.; Footnotes: (6) Modification to stock exhaust required to retain catalytic converter.; Footnotes: (208) Due to cylinder heads (aluminum) generation 6 engines, 502 BB Chevy may have clearance problems on some applications. Bottom of header flanges may hit head bolts. Notching may be necessary.; Drivetrain: 4WD; E.O. Number: D167-9; Emissions Notes: 1974 and earlier vehicles WITH A.I.R.: These headers are legal for use on '74-earlier vehicles with A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed from vehicle.
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: -
    • CUI: 351
    • EngineType: V6 ( 5.7 L / 351 )

    1968-1969  CHEVROLET K20 SUBURBAN

    • Fitment_Note: Air Conditioning: Yes; Power Steering: Yes; Auto Transmission - Column: Yes; Auto Transmission - Floor: Yes; Manual Transmission - Column: Yes; Manual Transmission - Floor: Yes; Footnotes: (112) Must use factory big block chevy hardware and mounts.; Footnotes: (139) Must use 1975 and later model clutch linkage located at rear of engine.; Footnotes: (160) Early chassis only.; Footnotes: (213) Elite replacement gasket 27550.; Footnotes: (225) Designed for use with a Trans-Dapt throttle body spacer.; Footnotes: (4) Includes parts necessary to retain emission devices. (50 State); Footnotes: (5) With A.I.R. system.; Footnotes: (6) Modification to stock exhaust required to retain catalytic converter.; Footnotes: (208) Due to cylinder heads (aluminum) generation 6 engines, 502 BB Chevy may have clearance problems on some applications. Bottom of header flanges may hit head bolts. Notching may be necessary.; Drivetrain: 4WD; E.O. Number: D167-9; Emissions Notes: 1974 and earlier vehicles WITH A.I.R.: These headers are legal for use on '74-earlier vehicles with A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed from vehicle.
    • Liter: 6.5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: E
    • CUI: 396
    • EngineType: V8 ( 6.5 L / 396 )

    1976  GMC C25 SUBURBAN

    • Fitment_Note: Air Conditioning: Yes; Power Steering: Yes; Auto Transmission - Column: Yes; Auto Transmission - Floor: Yes; Manual Transmission - Column: Yes; Manual Transmission - Floor: Yes; Footnotes: (112) Must use factory big block chevy hardware and mounts.; Footnotes: (139) Must use 1975 and later model clutch linkage located at rear of engine.; Footnotes: (160) Early chassis only.; Footnotes: (213) Elite replacement gasket 27550.; Footnotes: (225) Designed for use with a Trans-Dapt throttle body spacer.; Footnotes: (4) Includes parts necessary to retain emission devices. (50 State); Footnotes: (45) Not legal for sale or use in California on pollution controlled motor vehicles.; Footnotes: (5) With A.I.R. system.; Footnotes: (6) Modification to stock exhaust required to retain catalytic converter.; Footnotes: (208) Due to cylinder heads (aluminum) generation 6 engines, 502 BB Chevy may have clearance problems on some applications. Bottom of header flanges may hit head bolts. Notching may be necessary.; Drivetrain: 2WD; E.O. Number: D167-9; Emissions Notes: 1974 and earlier vehicles WITH A.I.R.: These headers are legal for use on '74-earlier vehicles with A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed from vehicle.
    • Liter: 7.4
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: Y
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1968-1969  GMC C25/C2500 PICKUP

    • Fitment_Note: Air Conditioning: Yes; Power Steering: Yes; Auto Transmission - Column: Yes; Auto Transmission - Floor: Yes; Manual Transmission - Column: Yes; Manual Transmission - Floor: Yes; Footnotes: (112) Must use factory big block chevy hardware and mounts.; Footnotes: (139) Must use 1975 and later model clutch linkage located at rear of engine.; Footnotes: (160) Early chassis only.; Footnotes: (213) Elite replacement gasket 27550.; Footnotes: (4) Includes parts necessary to retain emission devices. (50 State); Footnotes: (45) Not legal for sale or use in California on pollution controlled motor vehicles.; Footnotes: (5) With A.I.R. system.; Footnotes: (6) Modification to stock exhaust required to retain catalytic converter.; Footnotes: (208) Due to cylinder heads (aluminum) generation 6 engines, 502 BB Chevy may have clearance problems on some applications. Bottom of header flanges may hit head bolts. Notching may be necessary.; Drivetrain: 2WD; E.O. Number: D167-9; Emissions Notes: 1974 and earlier vehicles WITH A.I.R.: These headers are legal for use on '74-earlier vehicles with A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed from vehicle.
    • Liter: 6.5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: Y
    • CUI: 396
    • EngineType: V8 ( 6.5 L / 396 )

    1979-1980  GMC C1500

    • Liter: 7.4
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SIERRA CLASSIC
    • Engine Vin: S
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1975-1976  CHEVROLET C20 SUBURBAN

    • Fitment_Note: Air Conditioning: Yes; Power Steering: Yes; Auto Transmission - Column: Yes; Auto Transmission - Floor: Yes; Manual Transmission - Column: Yes; Manual Transmission - Floor: Yes; Footnotes: (112) Must use factory big block chevy hardware and mounts.; Footnotes: (139) Must use 1975 and later model clutch linkage located at rear of engine.; Footnotes: (160) Early chassis only.; Footnotes: (213) Elite replacement gasket 27550.; Footnotes: (225) Designed for use with a Trans-Dapt throttle body spacer.; Footnotes: (4) Includes parts necessary to retain emission devices. (50 State); Footnotes: (45) Not legal for sale or use in California on pollution controlled motor vehicles.; Footnotes: (5) With A.I.R. system.; Footnotes: (6) Modification to stock exhaust required to retain catalytic converter.; Footnotes: (208) Due to cylinder heads (aluminum) generation 6 engines, 502 BB Chevy may have clearance problems on some applications. Bottom of header flanges may hit head bolts. Notching may be necessary.; Drivetrain: 2WD; E.O. Number: D167-9; Emissions Notes: 1974 and earlier vehicles WITH A.I.R.: These headers are legal for use on '74-earlier vehicles with A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed from vehicle.
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: CUSTOM DELUXE
    • Engine Vin: V
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1973-1974  CHEVROLET C20 SUBURBAN

    • Fitment_Note: Air Conditioning: Yes; Power Steering: Yes; Auto Transmission - Column: Yes; Auto Transmission - Floor: Yes; Manual Transmission - Column: Yes; Manual Transmission - Floor: Yes; Footnotes: (112) Must use factory big block chevy hardware and mounts.; Footnotes: (139) Must use 1975 and later model clutch linkage located at rear of engine.; Footnotes: (160) Early chassis only.; Footnotes: (213) Elite replacement gasket 27550.; Footnotes: (225) Designed for use with a Trans-Dapt throttle body spacer.; Footnotes: (4) Includes parts necessary to retain emission devices. (50 State); Footnotes: (45) Not legal for sale or use in California on pollution controlled motor vehicles.; Footnotes: (5) With A.I.R. system.; Footnotes: (6) Modification to stock exhaust required to retain catalytic converter.; Footnotes: (208) Due to cylinder heads (aluminum) generation 6 engines, 502 BB Chevy may have clearance problems on some applications. Bottom of header flanges may hit head bolts. Notching may be necessary.; Drivetrain: 2WD; E.O. Number: D167-9; Emissions Notes: 1974 and earlier vehicles WITH A.I.R.: These headers are legal for use on '74-earlier vehicles with A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed from vehicle.
    • Liter: 4.8
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: T
    • CUI: 292
    • EngineType: L6 ( 4.8 L / 292 )

    1968-1969  GMC K25/K2500 SUBURBAN

    • Fitment_Note: Air Conditioning: Yes; Power Steering: Yes; Auto Transmission - Column: Yes; Auto Transmission - Floor: Yes; Manual Transmission - Column: Yes; Manual Transmission - Floor: Yes; Footnotes: (112) Must use factory big block chevy hardware and mounts.; Footnotes: (139) Must use 1975 and later model clutch linkage located at rear of engine.; Footnotes: (160) Early chassis only.; Footnotes: (213) Elite replacement gasket 27550.; Footnotes: (225) Designed for use with a Trans-Dapt throttle body spacer.; Footnotes: (4) Includes parts necessary to retain emission devices. (50 State); Footnotes: (5) With A.I.R. system.; Footnotes: (6) Modification to stock exhaust required to retain catalytic converter.; Footnotes: (208) Due to cylinder heads (aluminum) generation 6 engines, 502 BB Chevy may have clearance problems on some applications. Bottom of header flanges may hit head bolts. Notching may be necessary.; Drivetrain: 4WD; E.O. Number: D167-9; Emissions Notes: 1974 and earlier vehicles WITH A.I.R.: These headers are legal for use on '74-earlier vehicles with A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed from vehicle.
    • Liter: 4.8
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: S
    • CUI: 292
    • EngineType: L6 ( 4.8 L / 292 )

    1968-1969  GMC C35/C3500 PICKUP

    • Fitment_Note: Air Conditioning: Yes; Power Steering: Yes; Auto Transmission - Column: Yes; Auto Transmission - Floor: Yes; Manual Transmission - Column: Yes; Manual Transmission - Floor: Yes; Footnotes: (112) Must use factory big block chevy hardware and mounts.; Footnotes: (139) Must use 1975 and later model clutch linkage located at rear of engine.; Footnotes: (160) Early chassis only.; Footnotes: (213) Elite replacement gasket 27550.; Footnotes: (4) Includes parts necessary to retain emission devices. (50 State); Footnotes: (45) Not legal for sale or use in California on pollution controlled motor vehicles.; Footnotes: (5) With A.I.R. system.; Footnotes: (6) Modification to stock exhaust required to retain catalytic converter.; Footnotes: (208) Due to cylinder heads (aluminum) generation 6 engines, 502 BB Chevy may have clearance problems on some applications. Bottom of header flanges may hit head bolts. Notching may be necessary.; Drivetrain: 2WD; E.O. Number: D167-9; Emissions Notes: 1974 and earlier vehicles WITH A.I.R.: These headers are legal for use on '74-earlier vehicles with A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed from vehicle.
    • Liter: 6.5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: E
    • CUI: 396
    • EngineType: V8 ( 6.5 L / 396 )

    1980  CHEVROLET K20

    • Fitment_Note: Air Conditioning: Yes; Power Steering: Yes; Auto Transmission - Column: Yes; Auto Transmission - Floor: Yes; Manual Transmission - Column: No; Manual Transmission - Floor: Yes; Footnotes: (112) Must use factory big block chevy hardware and mounts.; Footnotes: (139) Must use 1975 and later model clutch linkage located at rear of engine.; Footnotes: (213) Elite replacement gasket 27550.; Footnotes: (4) Includes parts necessary to retain emission devices. (50 State); Footnotes: (5) With A.I.R. system.; Footnotes: (6) Modification to stock exhaust required to retain catalytic converter.; Drivetrain: 4WD; E.O. Number: D167-9; Emissions Notes: 1974 and earlier vehicles WITH A.I.R.: These headers are legal for use on '74-earlier vehicles with A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed from vehicle.
    • Liter: 7.4
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: CHEYENNE
    • Engine Vin: W
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1979-1980  GMC C1500

    • Liter: 7.4
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: HIGH SIERRA
    • Engine Vin: S
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1969  CHEVROLET K20 SUBURBAN

    • Fitment_Note: Air Conditioning: Yes; Power Steering: Yes; Auto Transmission - Column: Yes; Auto Transmission - Floor: Yes; Manual Transmission - Column: Yes; Manual Transmission - Floor: Yes; Footnotes: (112) Must use factory big block chevy hardware and mounts.; Footnotes: (139) Must use 1975 and later model clutch linkage located at rear of engine.; Footnotes: (160) Early chassis only.; Footnotes: (213) Elite replacement gasket 27550.; Footnotes: (225) Designed for use with a Trans-Dapt throttle body spacer.; Footnotes: (4) Includes parts necessary to retain emission devices. (50 State); Footnotes: (5) With A.I.R. system.; Footnotes: (6) Modification to stock exhaust required to retain catalytic converter.; Footnotes: (208) Due to cylinder heads (aluminum) generation 6 engines, 502 BB Chevy may have clearance problems on some applications. Bottom of header flanges may hit head bolts. Notching may be necessary.; Drivetrain: 4WD; E.O. Number: D167-9; Emissions Notes: 1974 and earlier vehicles WITH A.I.R.: These headers are legal for use on '74-earlier vehicles with A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed from vehicle.
    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: U
    • CUI: 307
    • EngineType: V8 ( 5 L / 307 )

    1968-1969  GMC C25/C2500 PICKUP

    • Fitment_Note: Air Conditioning: Yes; Power Steering: Yes; Auto Transmission - Column: Yes; Auto Transmission - Floor: Yes; Manual Transmission - Column: Yes; Manual Transmission - Floor: Yes; Footnotes: (112) Must use factory big block chevy hardware and mounts.; Footnotes: (139) Must use 1975 and later model clutch linkage located at rear of engine.; Footnotes: (160) Early chassis only.; Footnotes: (213) Elite replacement gasket 27550.; Footnotes: (4) Includes parts necessary to retain emission devices. (50 State); Footnotes: (45) Not legal for sale or use in California on pollution controlled motor vehicles.; Footnotes: (5) With A.I.R. system.; Footnotes: (6) Modification to stock exhaust required to retain catalytic converter.; Footnotes: (208) Due to cylinder heads (aluminum) generation 6 engines, 502 BB Chevy may have clearance problems on some applications. Bottom of header flanges may hit head bolts. Notching may be necessary.; Drivetrain: 2WD; E.O. Number: D167-9; Emissions Notes: 1974 and earlier vehicles WITH A.I.R.: These headers are legal for use on '74-earlier vehicles with A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed from vehicle.
    • Liter: 6.5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: E
    • CUI: 396
    • EngineType: V8 ( 6.5 L / 396 )

    1973-1974  GMC C25/C2500 SUBURBAN

    • Fitment_Note: Air Conditioning: Yes; Power Steering: Yes; Auto Transmission - Column: Yes; Auto Transmission - Floor: Yes; Manual Transmission - Column: Yes; Manual Transmission - Floor: Yes; Footnotes: (112) Must use factory big block chevy hardware and mounts.; Footnotes: (139) Must use 1975 and later model clutch linkage located at rear of engine.; Footnotes: (160) Early chassis only.; Footnotes: (213) Elite replacement gasket 27550.; Footnotes: (225) Designed for use with a Trans-Dapt throttle body spacer.; Footnotes: (4) Includes parts necessary to retain emission devices. (50 State); Footnotes: (45) Not legal for sale or use in California on pollution controlled motor vehicles.; Footnotes: (5) With A.I.R. system.; Footnotes: (6) Modification to stock exhaust required to retain catalytic converter.; Footnotes: (208) Due to cylinder heads (aluminum) generation 6 engines, 502 BB Chevy may have clearance problems on some applications. Bottom of header flanges may hit head bolts. Notching may be necessary.; Drivetrain: 2WD; E.O. Number: D167-9; Emissions Notes: 1974 and earlier vehicles WITH A.I.R.: These headers are legal for use on '74-earlier vehicles with A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed from vehicle.
    • Liter: 4.1
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: Q
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1985  CHEVROLET K20 SUBURBAN

    • Fitment_Note: Air Conditioning: Yes; Power Steering: Yes; Auto Transmission - Column: Yes; Auto Transmission - Floor: Yes; Manual Transmission - Column: Yes; Manual Transmission - Floor: Yes; Footnotes: (112) Must use factory big block chevy hardware and mounts.; Footnotes: (139) Must use 1975 and later model clutch linkage located at rear of engine.; Footnotes: (160) Early chassis only.; Footnotes: (213) Elite replacement gasket 27550.; Footnotes: (225) Designed for use with a Trans-Dapt throttle body spacer.; Footnotes: (4) Includes parts necessary to retain emission devices. (50 State); Footnotes: (5) With A.I.R. system.; Footnotes: (6) Modification to stock exhaust required to retain catalytic converter.; Footnotes: (208) Due to cylinder heads (aluminum) generation 6 engines, 502 BB Chevy may have clearance problems on some applications. Bottom of header flanges may hit head bolts. Notching may be necessary.; Drivetrain: 4WD; E.O. Number: D167-9; Emissions Notes: 1974 and earlier vehicles WITH A.I.R.: These headers are legal for use on '74-earlier vehicles with A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed from vehicle.
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: CUSTOM
    • Engine Vin: L
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1973-1974  CHEVROLET K20 SUBURBAN

    • Fitment_Note: Air Conditioning: Yes; Power Steering: Yes; Auto Transmission - Column: Yes; Auto Transmission - Floor: Yes; Manual Transmission - Column: Yes; Manual Transmission - Floor: Yes; Footnotes: (112) Must use factory big block chevy hardware and mounts.; Footnotes: (139) Must use 1975 and later model clutch linkage located at rear of engine.; Footnotes: (160) Early chassis only.; Footnotes: (213) Elite replacement gasket 27550.; Footnotes: (225) Designed for use with a Trans-Dapt throttle body spacer.; Footnotes: (4) Includes parts necessary to retain emission devices. (50 State); Footnotes: (5) With A.I.R. system.; Footnotes: (6) Modification to stock exhaust required to retain catalytic converter.; Footnotes: (208) Due to cylinder heads (aluminum) generation 6 engines, 502 BB Chevy may have clearance problems on some applications. Bottom of header flanges may hit head bolts. Notching may be necessary.; Drivetrain: 4WD; E.O. Number: D167-9; Emissions Notes: 1974 and earlier vehicles WITH A.I.R.: These headers are legal for use on '74-earlier vehicles with A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed from vehicle.
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: W
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1976  GMC JIMMY

    • Fitment_Note: Air Conditioning: Yes; Power Steering: Yes; Auto Transmission - Column: Yes; Auto Transmission - Floor: Yes; Manual Transmission - Column: Yes; Manual Transmission - Floor: Yes; Footnotes: (112) Must use factory big block chevy hardware and mounts.; Footnotes: (139) Must use 1975 and later model clutch linkage located at rear of engine.; Footnotes: (213) Elite replacement gasket 27550.; Footnotes: (225) Designed for use with a Trans-Dapt throttle body spacer.; Footnotes: (4) Includes parts necessary to retain emission devices. (50 State); Footnotes: (45) Not legal for sale or use in California on pollution controlled motor vehicles.; Footnotes: (5) With A.I.R. system.; Footnotes: (6) Modification to stock exhaust required to retain catalytic converter.; Footnotes: (208) Due to cylinder heads (aluminum) generation 6 engines, 502 BB Chevy may have clearance problems on some applications. Bottom of header flanges may hit head bolts. Notching may be necessary.; Drivetrain: 2WD; E.O. Number: D167-27; Emissions Notes: 1974 and earlier vehicles WITH A.I.R.: These headers are legal for use on '74-earlier vehicles with A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed from vehicle.; 1/2 Ton, Full-sized only.
    • Liter: 6.6
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: U
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1987  CHEVROLET V20 SUBURBAN

    • Fitment_Note: Air Conditioning: Yes; Power Steering: Yes; Auto Transmission - Column: Yes; Auto Transmission - Floor: Yes; Manual Transmission - Column: Yes; Manual Transmission - Floor: Yes; Footnotes: (112) Must use factory big block chevy hardware and mounts.; Footnotes: (139) Must use 1975 and later model clutch linkage located at rear of engine.; Footnotes: (160) Early chassis only.; Footnotes: (213) Elite replacement gasket 27550.; Footnotes: (225) Designed for use with a Trans-Dapt throttle body spacer.; Footnotes: (4) Includes parts necessary to retain emission devices. (50 State); Footnotes: (5) With A.I.R. system.; Footnotes: (6) Modification to stock exhaust required to retain catalytic converter.; Footnotes: (208) Due to cylinder heads (aluminum) generation 6 engines, 502 BB Chevy may have clearance problems on some applications. Bottom of header flanges may hit head bolts. Notching may be necessary.; Drivetrain: 4WD; E.O. Number: D167-9; Emissions Notes: 1974 and earlier vehicles WITH A.I.R.: These headers are legal for use on '74-earlier vehicles with A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed from vehicle.
    • Liter: 6.2
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: CUSTOM DELUXE
    • Engine Vin: J
    • CUI: 379
    • EngineType: V8 ( 6.2 L / 379 )

    1973-1974  GMC C25/C2500 SUBURBAN

    • Fitment_Note: Air Conditioning: Yes; Power Steering: Yes; Auto Transmission - Column: Yes; Auto Transmission - Floor: Yes; Manual Transmission - Column: Yes; Manual Transmission - Floor: Yes; Footnotes: (112) Must use factory big block chevy hardware and mounts.; Footnotes: (139) Must use 1975 and later model clutch linkage located at rear of engine.; Footnotes: (160) Early chassis only.; Footnotes: (213) Elite replacement gasket 27550.; Footnotes: (225) Designed for use with a Trans-Dapt throttle body spacer.; Footnotes: (4) Includes parts necessary to retain emission devices. (50 State); Footnotes: (45) Not legal for sale or use in California on pollution controlled motor vehicles.; Footnotes: (5) With A.I.R. system.; Footnotes: (6) Modification to stock exhaust required to retain catalytic converter.; Footnotes: (208) Due to cylinder heads (aluminum) generation 6 engines, 502 BB Chevy may have clearance problems on some applications. Bottom of header flanges may hit head bolts. Notching may be necessary.; Drivetrain: 2WD; E.O. Number: D167-9; Emissions Notes: 1974 and earlier vehicles WITH A.I.R.: These headers are legal for use on '74-earlier vehicles with A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed from vehicle.
    • Liter: 7.4
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: Z
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1980  GMC C1500

    • Liter: 7.4
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SIERRA GRANDE
    • Engine Vin: W
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1981-1982  CHEVROLET C20 SUBURBAN

    • Fitment_Note: Air Conditioning: Yes; Power Steering: Yes; Auto Transmission - Column: Yes; Auto Transmission - Floor: Yes; Manual Transmission - Column: Yes; Manual Transmission - Floor: Yes; Footnotes: (112) Must use factory big block chevy hardware and mounts.; Footnotes: (139) Must use 1975 and later model clutch linkage located at rear of engine.; Footnotes: (160) Early chassis only.; Footnotes: (213) Elite replacement gasket 27550.; Footnotes: (225) Designed for use with a Trans-Dapt throttle body spacer.; Footnotes: (4) Includes parts necessary to retain emission devices. (50 State); Footnotes: (45) Not legal for sale or use in California on pollution controlled motor vehicles.; Footnotes: (5) With A.I.R. system.; Footnotes: (6) Modification to stock exhaust required to retain catalytic converter.; Footnotes: (208) Due to cylinder heads (aluminum) generation 6 engines, 502 BB Chevy may have clearance problems on some applications. Bottom of header flanges may hit head bolts. Notching may be necessary.; Drivetrain: 2WD; E.O. Number: D167-9; Emissions Notes: 1974 and earlier vehicles WITH A.I.R.: These headers are legal for use on '74-earlier vehicles with A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed from vehicle.
    • Liter: 4.8
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: CUSTOM
    • Engine Vin: T
    • CUI: 292
    • EngineType: L6 ( 4.8 L / 292 )

    1968-1969  GMC K25/K2500 SUBURBAN

    • Fitment_Note: Air Conditioning: Yes; Power Steering: Yes; Auto Transmission - Column: Yes; Auto Transmission - Floor: Yes; Manual Transmission - Column: Yes; Manual Transmission - Floor: Yes; Footnotes: (112) Must use factory big block chevy hardware and mounts.; Footnotes: (139) Must use 1975 and later model clutch linkage located at rear of engine.; Footnotes: (160) Early chassis only.; Footnotes: (213) Elite replacement gasket 27550.; Footnotes: (225) Designed for use with a Trans-Dapt throttle body spacer.; Footnotes: (4) Includes parts necessary to retain emission devices. (50 State); Footnotes: (5) With A.I.R. system.; Footnotes: (6) Modification to stock exhaust required to retain catalytic converter.; Footnotes: (208) Due to cylinder heads (aluminum) generation 6 engines, 502 BB Chevy may have clearance problems on some applications. Bottom of header flanges may hit head bolts. Notching may be necessary.; Drivetrain: 4WD; E.O. Number: D167-9; Emissions Notes: 1974 and earlier vehicles WITH A.I.R.: These headers are legal for use on '74-earlier vehicles with A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed from vehicle.
    • Liter: 6.5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: Y
    • CUI: 396
    • EngineType: V8 ( 6.5 L / 396 )

    1981-1986  CHEVROLET C20 SUBURBAN

    • Fitment_Note: Air Conditioning: Yes; Power Steering: Yes; Auto Transmission - Column: Yes; Auto Transmission - Floor: Yes; Manual Transmission - Column: Yes; Manual Transmission - Floor: Yes; Footnotes: (112) Must use factory big block chevy hardware and mounts.; Footnotes: (139) Must use 1975 and later model clutch linkage located at rear of engine.; Footnotes: (160) Early chassis only.; Footnotes: (213) Elite replacement gasket 27550.; Footnotes: (225) Designed for use with a Trans-Dapt throttle body spacer.; Footnotes: (4) Includes parts necessary to retain emission devices. (50 State); Footnotes: (45) Not legal for sale or use in California on pollution controlled motor vehicles.; Footnotes: (5) With A.I.R. system.; Footnotes: (6) Modification to stock exhaust required to retain catalytic converter.; Footnotes: (208) Due to cylinder heads (aluminum) generation 6 engines, 502 BB Chevy may have clearance problems on some applications. Bottom of header flanges may hit head bolts. Notching may be necessary.; Drivetrain: 2WD; E.O. Number: D167-9; Emissions Notes: 1974 and earlier vehicles WITH A.I.R.: These headers are legal for use on '74-earlier vehicles with A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed from vehicle.
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: CUSTOM
    • Engine Vin: M
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1968-1969  CHEVROLET K20 PICKUP

    • Fitment_Note: Air Conditioning: Yes; Power Steering: Yes; Auto Transmission - Column: Yes; Auto Transmission - Floor: Yes; Manual Transmission - Column: No; Manual Transmission - Floor: Yes; Footnotes: (112) Must use factory big block chevy hardware and mounts.; Footnotes: (139) Must use 1975 and later model clutch linkage located at rear of engine.; Footnotes: (213) Elite replacement gasket 27550.; Footnotes: (4) Includes parts necessary to retain emission devices. (50 State); Footnotes: (5) With A.I.R. system.; Footnotes: (6) Modification to stock exhaust required to retain catalytic converter.; Drivetrain: 4WD; E.O. Number: D167-9; Emissions Notes: 1974 and earlier vehicles WITH A.I.R.: These headers are legal for use on '74-earlier vehicles with A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed from vehicle.
    • Liter: 6.5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: E
    • CUI: 396
    • EngineType: V8 ( 6.5 L / 396 )

    1988  CHEVROLET V20 SUBURBAN

    • Fitment_Note: Air Conditioning: Yes; Power Steering: Yes; Auto Transmission - Column: Yes; Auto Transmission - Floor: Yes; Manual Transmission - Column: Yes; Manual Transmission - Floor: Yes; Footnotes: (112) Must use factory big block chevy hardware and mounts.; Footnotes: (139) Must use 1975 and later model clutch linkage located at rear of engine.; Footnotes: (160) Early chassis only.; Footnotes: (213) Elite replacement gasket 27550.; Footnotes: (225) Designed for use with a Trans-Dapt throttle body spacer.; Footnotes: (4) Includes parts necessary to retain emission devices. (50 State); Footnotes: (5) With A.I.R. system.; Footnotes: (6) Modification to stock exhaust required to retain catalytic converter.; Footnotes: (208) Due to cylinder heads (aluminum) generation 6 engines, 502 BB Chevy may have clearance problems on some applications. Bottom of header flanges may hit head bolts. Notching may be necessary.; Drivetrain: 4WD; E.O. Number: D167-9; Emissions Notes: 1974 and earlier vehicles WITH A.I.R.: These headers are legal for use on '74-earlier vehicles with A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed from vehicle.
    • Liter: 7.4
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SCOTTSDALE
    • Engine Vin: N
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1981-1986  CHEVROLET C20 SUBURBAN

    • Fitment_Note: Air Conditioning: Yes; Power Steering: Yes; Auto Transmission - Column: Yes; Auto Transmission - Floor: Yes; Manual Transmission - Column: Yes; Manual Transmission - Floor: Yes; Footnotes: (112) Must use factory big block chevy hardware and mounts.; Footnotes: (139) Must use 1975 and later model clutch linkage located at rear of engine.; Footnotes: (160) Early chassis only.; Footnotes: (213) Elite replacement gasket 27550.; Footnotes: (225) Designed for use with a Trans-Dapt throttle body spacer.; Footnotes: (4) Includes parts necessary to retain emission devices. (50 State); Footnotes: (45) Not legal for sale or use in California on pollution controlled motor vehicles.; Footnotes: (5) With A.I.R. system.; Footnotes: (6) Modification to stock exhaust required to retain catalytic converter.; Footnotes: (208) Due to cylinder heads (aluminum) generation 6 engines, 502 BB Chevy may have clearance problems on some applications. Bottom of header flanges may hit head bolts. Notching may be necessary.; Drivetrain: 2WD; E.O. Number: D167-9; Emissions Notes: 1974 and earlier vehicles WITH A.I.R.: These headers are legal for use on '74-earlier vehicles with A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed from vehicle.
    • Liter: 7.4
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: CUSTOM
    • Engine Vin: W
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1969  GMC K25/K2500 SUBURBAN

    • Fitment_Note: Air Conditioning: Yes; Power Steering: Yes; Auto Transmission - Column: Yes; Auto Transmission - Floor: Yes; Manual Transmission - Column: Yes; Manual Transmission - Floor: Yes; Footnotes: (112) Must use factory big block chevy hardware and mounts.; Footnotes: (139) Must use 1975 and later model clutch linkage located at rear of engine.; Footnotes: (160) Early chassis only.; Footnotes: (213) Elite replacement gasket 27550.; Footnotes: (225) Designed for use with a Trans-Dapt throttle body spacer.; Footnotes: (4) Includes parts necessary to retain emission devices. (50 State); Footnotes: (5) With A.I.R. system.; Footnotes: (6) Modification to stock exhaust required to retain catalytic converter.; Footnotes: (208) Due to cylinder heads (aluminum) generation 6 engines, 502 BB Chevy may have clearance problems on some applications. Bottom of header flanges may hit head bolts. Notching may be necessary.; Drivetrain: 4WD; E.O. Number: D167-9; Emissions Notes: 1974 and earlier vehicles WITH A.I.R.: These headers are legal for use on '74-earlier vehicles with A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed from vehicle.
    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: U
    • CUI: 307
    • EngineType: V8 ( 5 L / 307 )

    1969  GMC K25/K2500 SUBURBAN

    • Fitment_Note: Air Conditioning: Yes; Power Steering: Yes; Auto Transmission - Column: Yes; Auto Transmission - Floor: Yes; Manual Transmission - Column: Yes; Manual Transmission - Floor: Yes; Footnotes: (112) Must use factory big block chevy hardware and mounts.; Footnotes: (139) Must use 1975 and later model clutch linkage located at rear of engine.; Footnotes: (160) Early chassis only.; Footnotes: (213) Elite replacement gasket 27550.; Footnotes: (225) Designed for use with a Trans-Dapt throttle body spacer.; Footnotes: (4) Includes parts necessary to retain emission devices. (50 State); Footnotes: (5) With A.I.R. system.; Footnotes: (6) Modification to stock exhaust required to retain catalytic converter.; Footnotes: (208) Due to cylinder heads (aluminum) generation 6 engines, 502 BB Chevy may have clearance problems on some applications. Bottom of header flanges may hit head bolts. Notching may be necessary.; Drivetrain: 4WD; E.O. Number: D167-9; Emissions Notes: 1974 and earlier vehicles WITH A.I.R.: These headers are legal for use on '74-earlier vehicles with A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed from vehicle.
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: -
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1968-1969  CHEVROLET K20 SUBURBAN

    • Fitment_Note: Air Conditioning: Yes; Power Steering: Yes; Auto Transmission - Column: Yes; Auto Transmission - Floor: Yes; Manual Transmission - Column: Yes; Manual Transmission - Floor: Yes; Footnotes: (112) Must use factory big block chevy hardware and mounts.; Footnotes: (139) Must use 1975 and later model clutch linkage located at rear of engine.; Footnotes: (160) Early chassis only.; Footnotes: (213) Elite replacement gasket 27550.; Footnotes: (225) Designed for use with a Trans-Dapt throttle body spacer.; Footnotes: (4) Includes parts necessary to retain emission devices. (50 State); Footnotes: (5) With A.I.R. system.; Footnotes: (6) Modification to stock exhaust required to retain catalytic converter.; Footnotes: (208) Due to cylinder heads (aluminum) generation 6 engines, 502 BB Chevy may have clearance problems on some applications. Bottom of header flanges may hit head bolts. Notching may be necessary.; Drivetrain: 4WD; E.O. Number: D167-9; Emissions Notes: 1974 and earlier vehicles WITH A.I.R.: These headers are legal for use on '74-earlier vehicles with A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed from vehicle.
    • Liter: 5.3
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: -
    • CUI: 327
    • EngineType: V8 ( 5.3 L / 327 )

    1976-1980  CHEVROLET C20

    • Fitment_Note: Air Conditioning: Yes; Power Steering: Yes; Auto Transmission - Column: Yes; Auto Transmission - Floor: Yes; Manual Transmission - Column: Yes; Manual Transmission - Floor: Yes; Footnotes: (112) Must use factory big block chevy hardware and mounts.; Footnotes: (139) Must use 1975 and later model clutch linkage located at rear of engine.; Footnotes: (160) Early chassis only.; Footnotes: (213) Elite replacement gasket 27550.; Footnotes: (4) Includes parts necessary to retain emission devices. (50 State); Footnotes: (45) Not legal for sale or use in California on pollution controlled motor vehicles.; Footnotes: (5) With A.I.R. system.; Footnotes: (6) Modification to stock exhaust required to retain catalytic converter.; Footnotes: (208) Due to cylinder heads (aluminum) generation 6 engines, 502 BB Chevy may have clearance problems on some applications. Bottom of header flanges may hit head bolts. Notching may be necessary.; Drivetrain: 2WD; E.O. Number: D167-9; Emissions Notes: 1974 and earlier vehicles WITH A.I.R.: These headers are legal for use on '74-earlier vehicles with A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed from vehicle.
    • Liter: 7.4
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: CHEYENNE
    • Engine Vin: S
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1975  CHEVROLET C10

    • Liter: 7.4
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: CHEYENNE
    • Engine Vin: Z
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1976-1978  GMC C35

    • Fitment_Note: Air Conditioning: Yes; Power Steering: Yes; Auto Transmission - Column: Yes; Auto Transmission - Floor: Yes; Manual Transmission - Column: Yes; Manual Transmission - Floor: Yes; Footnotes: (112) Must use factory big block chevy hardware and mounts.; Footnotes: (139) Must use 1975 and later model clutch linkage located at rear of engine.; Footnotes: (160) Early chassis only.; Footnotes: (213) Elite replacement gasket 27550.; Footnotes: (4) Includes parts necessary to retain emission devices. (50 State); Footnotes: (45) Not legal for sale or use in California on pollution controlled motor vehicles.; Footnotes: (5) With A.I.R. system.; Footnotes: (6) Modification to stock exhaust required to retain catalytic converter.; Footnotes: (208) Due to cylinder heads (aluminum) generation 6 engines, 502 BB Chevy may have clearance problems on some applications. Bottom of header flanges may hit head bolts. Notching may be necessary.; Drivetrain: 2WD; E.O. Number: D167-9; Emissions Notes: 1974 and earlier vehicles WITH A.I.R.: These headers are legal for use on '74-earlier vehicles with A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed from vehicle.
    • Liter: 7.4
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: S
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1987  CHEVROLET R20 SUBURBAN

    • Fitment_Note: Air Conditioning: Yes; Power Steering: Yes; Auto Transmission - Column: Yes; Auto Transmission - Floor: Yes; Manual Transmission - Column: Yes; Manual Transmission - Floor: Yes; Footnotes: (112) Must use factory big block chevy hardware and mounts.; Footnotes: (139) Must use 1975 and later model clutch linkage located at rear of engine.; Footnotes: (160) Early chassis only.; Footnotes: (213) Elite replacement gasket 27550.; Footnotes: (225) Designed for use with a Trans-Dapt throttle body spacer.; Footnotes: (4) Includes parts necessary to retain emission devices. (50 State); Footnotes: (45) Not legal for sale or use in California on pollution controlled motor vehicles.; Footnotes: (5) With A.I.R. system.; Footnotes: (6) Modification to stock exhaust required to retain catalytic converter.; Footnotes: (208) Due to cylinder heads (aluminum) generation 6 engines, 502 BB Chevy may have clearance problems on some applications. Bottom of header flanges may hit head bolts. Notching may be necessary.; Drivetrain: 2WD; E.O. Number: D167-9; Emissions Notes: 1974 and earlier vehicles WITH A.I.R.: These headers are legal for use on '74-earlier vehicles with A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed from vehicle.
    • Liter: 6.2
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: CUSTOM DELUXE
    • Engine Vin: J
    • CUI: 379
    • EngineType: V8 ( 6.2 L / 379 )

    1973  CHEVROLET C20 SUBURBAN

    • Fitment_Note: Air Conditioning: Yes; Power Steering: Yes; Auto Transmission - Column: Yes; Auto Transmission - Floor: Yes; Manual Transmission - Column: Yes; Manual Transmission - Floor: Yes; Footnotes: (112) Must use factory big block chevy hardware and mounts.; Footnotes: (139) Must use 1975 and later model clutch linkage located at rear of engine.; Footnotes: (160) Early chassis only.; Footnotes: (213) Elite replacement gasket 27550.; Footnotes: (225) Designed for use with a Trans-Dapt throttle body spacer.; Footnotes: (4) Includes parts necessary to retain emission devices. (50 State); Footnotes: (45) Not legal for sale or use in California on pollution controlled motor vehicles.; Footnotes: (5) With A.I.R. system.; Footnotes: (6) Modification to stock exhaust required to retain catalytic converter.; Footnotes: (208) Due to cylinder heads (aluminum) generation 6 engines, 502 BB Chevy may have clearance problems on some applications. Bottom of header flanges may hit head bolts. Notching may be necessary.; Drivetrain: 2WD; E.O. Number: D167-9; Emissions Notes: 1974 and earlier vehicles WITH A.I.R.: These headers are legal for use on '74-earlier vehicles with A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed from vehicle.
    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: X
    • CUI: 307
    • EngineType: V8 ( 5 L / 307 )

    1973-1974  CHEVROLET C20 SUBURBAN

    • Fitment_Note: Air Conditioning: Yes; Power Steering: Yes; Auto Transmission - Column: Yes; Auto Transmission - Floor: Yes; Manual Transmission - Column: Yes; Manual Transmission - Floor: Yes; Footnotes: (112) Must use factory big block chevy hardware and mounts.; Footnotes: (139) Must use 1975 and later model clutch linkage located at rear of engine.; Footnotes: (160) Early chassis only.; Footnotes: (213) Elite replacement gasket 27550.; Footnotes: (225) Designed for use with a Trans-Dapt throttle body spacer.; Footnotes: (4) Includes parts necessary to retain emission devices. (50 State); Footnotes: (45) Not legal for sale or use in California on pollution controlled motor vehicles.; Footnotes: (5) With A.I.R. system.; Footnotes: (6) Modification to stock exhaust required to retain catalytic converter.; Footnotes: (208) Due to cylinder heads (aluminum) generation 6 engines, 502 BB Chevy may have clearance problems on some applications. Bottom of header flanges may hit head bolts. Notching may be necessary.; Drivetrain: 2WD; E.O. Number: D167-9; Emissions Notes: 1974 and earlier vehicles WITH A.I.R.: These headers are legal for use on '74-earlier vehicles with A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed from vehicle.
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: W
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    Items You Need

    Some parts are not legal for use in California or other states with similar laws / regulations

    Motor Vehicles

    WARNING: Motor vehicles contain fuel, oils and fluids, battery posts, terminals and related accessories which contain lead and lead compounds and other chemicals known to the State of California to cause cancer, birth defects and other reproductive harm. These chemicals are found in vehicles, vehicle parts and accessories, both new and as replacements. When being serviced, these vehicles generate used oil, waste fluids, grease, fumes and particulates, all known to the State of California to cause cancer, birth defects, and reproductive harm.

    Tools:

    WARNING: Some dust created by power sanding, sawing, grinding, drilling, and other construction activities contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Some examples of these chemicals are: lead from lead-based paints, crystalline silica from bricks and cement and other masonry products, and arsenic and chromium from chemically treated lumber. Your risk from exposure to these chemicals varies, depending on how often you do this type of work. To reduce your exposure, work in a well-ventilated area and with approved safety equipment, such as dust masks that are specially designed to filter out microscopic particles.

    Electrical Cords

    WARNING: The wires of these products contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling.