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Hedman Standard Duty Uncoated Full Length Headers for 1967-91 Chevy/GMC Blazer, Jimmy, Suburban 2WD

500-69130

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Hedman 69130
$275.99
Standard Duty Uncoated Full Length Headers
  • 1967-91 Chevy/GMC Blazer, Jimmy, Suburban 2WD
  • 396-502
  • Tube Size: 2"
  • Collector Size: 3"
  • Free Shipping - Ships directly from the manufacturer
    Save $10 on $199, $20 on $299, $30 on $499, $100 on $1,199 Orders. Promo Code: OPENROAD exclusions apply
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    1980  CHEVROLET C10

    • 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: (1) Without smog injection or injection heads.; 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: (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.; Emissions Notes: NOT LEGAL FOR STREET USE: Not applicable or intended for street or highway use on '75-later vehicles. Legal for racing only, and never used on a highway or public road.
    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SILVERADO
    • Engine Vin: G
    • CUI: 305
    • EngineType: V8 ( 5 L / 305 )

    1980  CHEVROLET C20

    • 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: (1) Without smog injection or injection heads.; 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: (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.; Emissions Notes: NOT LEGAL FOR STREET USE: Not applicable or intended for street or highway use on '75-later vehicles. Legal for racing only, and never used on a highway or public road.
    • Liter: 6.6
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SCOTTSDALE
    • Engine Vin: X
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1980  CHEVROLET C20

    • 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: (1) Without smog injection or injection heads.; 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: (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.; Emissions Notes: NOT LEGAL FOR STREET USE: Not applicable or intended for street or highway use on '75-later vehicles. Legal for racing only, and never used on a highway or public road.
    • Liter: 6.6
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SILVERADO
    • Engine Vin: X
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1970  GMC C25/C2500 SUBURBAN

    • 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: (1) Without smog injection or injection heads.; 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.; Emissions Notes: 1974 and earlier vehicles WITHOUT A.I.R.: Legal for use on '74-earlier vehicles without A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed.
    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: A
    • CUI: 307
    • EngineType: V8 ( 5 L / 307 )

    1969  GMC C25/C2500 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: (1) Without smog injection or injection heads.; 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.; Emissions Notes: 1974 and earlier vehicles WITHOUT A.I.R.: Legal for use on '74-earlier vehicles without A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed.
    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: U
    • CUI: 307
    • EngineType: V8 ( 5 L / 307 )

    1975  CHEVROLET C20 SUBURBAN

    • 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: (1) Without smog injection or injection heads.; 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: (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.; Emissions Notes: NOT LEGAL FOR STREET USE: Not applicable or intended for street or highway use on '75-later vehicles. Legal for racing only, and never used on a highway or public road.
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SILVERADO
    • Engine Vin: Y
    • 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: No; Manual Transmission - Floor: Yes; Footnotes: (1) Without smog injection or injection heads.; 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: (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.; Emissions Notes: 1974 and earlier vehicles WITHOUT A.I.R.: Legal for use on '74-earlier vehicles without A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed.
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: W
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1975  CHEVROLET C20

    • 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: (1) Without smog injection or injection heads.; 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: (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.; Emissions Notes: NOT LEGAL FOR STREET USE: Not applicable or intended for street or highway use on '75-later vehicles. Legal for racing only, and never used on a highway or public road.
    • Liter: 4.1
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: CUSTOM DELUXE
    • Engine Vin: Q
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1975-1976  GMC C35

    • 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: (1) Without smog injection or injection heads.; 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: (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.; Emissions Notes: NOT LEGAL FOR STREET USE: Not applicable or intended for street or highway use on '75-later vehicles. Legal for racing only, and never used on a highway or public road.
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: HIGH SIERRA
    • Engine Vin: V
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1979-1980  CHEVROLET C20 SUBURBAN

    • 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: (1) Without smog injection or injection heads.; 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: (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.; Emissions Notes: NOT LEGAL FOR STREET USE: Not applicable or intended for street or highway use on '75-later vehicles. Legal for racing only, and never used on a highway or public road.
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SILVERADO
    • Engine Vin: L
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1979  GMC C2500

    • 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: (1) Without smog injection or injection heads.; 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: (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.; Emissions Notes: NOT LEGAL FOR STREET USE: Not applicable or intended for street or highway use on '75-later vehicles. Legal for racing only, and never used on a highway or public road.
    • Liter: 6.6
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SIERRA GRANDE
    • Engine Vin: R
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1973-1974  GMC C15/C1500 SUBURBAN

    • 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: (1) Without smog injection or injection heads.; 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: (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.; Emissions Notes: 1974 and earlier vehicles WITHOUT A.I.R.: Legal for use on '74-earlier vehicles without A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed.
    • Liter: 7.4
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: L
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1971  CHEVROLET C10 SUBURBAN

    • 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: (1) Without smog injection or injection heads.; 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.; Emissions Notes: 1974 and earlier vehicles WITHOUT A.I.R.: Legal for use on '74-earlier vehicles without A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed.
    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: H
    • CUI: 307
    • EngineType: V8 ( 5 L / 307 )

    1975  GMC C15 SUBURBAN

    • 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: (1) Without smog injection or injection heads.; 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: (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.; Emissions Notes: NOT LEGAL FOR STREET USE: Not applicable or intended for street or highway use on '75-later vehicles. Legal for racing only, and never used on a highway or public road.
    • Liter: 4.1
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: Q
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1976  CHEVROLET C20 SUBURBAN

    • 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: (1) Without smog injection or injection heads.; 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: (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.; Emissions Notes: NOT LEGAL FOR STREET USE: Not applicable or intended for street or highway use on '75-later vehicles. Legal for racing only, and never used on a highway or public road.
    • Liter: 6.6
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: CUSTOM DELUXE
    • Engine Vin: U
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1976-1980  CHEVROLET C10

    • 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: (1) Without smog injection or injection heads.; 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: (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.; Emissions Notes: NOT LEGAL FOR STREET USE: Not applicable or intended for street or highway use on '75-later vehicles. Legal for racing only, and never used on a highway or public road.
    • Liter: 4.1
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SILVERADO
    • Engine Vin: D
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1980-1986  CHEVROLET C20

    • 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: (1) Without smog injection or injection heads.; 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: (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.; Emissions Notes: NOT LEGAL FOR STREET USE: Not applicable or intended for street or highway use on '75-later vehicles. Legal for racing only, and never used on a highway or public road.
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SCOTTSDALE
    • Engine Vin: M
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1980  GMC C1500

    • 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: (1) Without smog injection or injection heads.; 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: (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.; Emissions Notes: NOT LEGAL FOR STREET USE: Not applicable or intended for street or highway use on '75-later vehicles. Legal for racing only, and never used on a highway or public road.
    • Liter: 6.6
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: X
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1975-1976  GMC C35

    • 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: (1) Without smog injection or injection heads.; 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: (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.; Emissions Notes: NOT LEGAL FOR STREET USE: Not applicable or intended for street or highway use on '75-later vehicles. Legal for racing only, and never used on a highway or public road.
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SIERRA CLASSIC
    • Engine Vin: V
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1975  CHEVROLET C10 SUBURBAN

    • 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: (1) Without smog injection or injection heads.; 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: (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.; Emissions Notes: NOT LEGAL FOR STREET USE: Not applicable or intended for street or highway use on '75-later vehicles. Legal for racing only, and never used on a highway or public road.
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SCOTTSDALE
    • Engine Vin: Y
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1979-1980  GMC C1500 SUBURBAN

    • 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: (1) Without smog injection or injection heads.; 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: (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.; Emissions Notes: NOT LEGAL FOR STREET USE: Not applicable or intended for street or highway use on '75-later vehicles. Legal for racing only, and never used on a highway or public road.
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: HIGH SIERRA
    • Engine Vin: Z
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1977-1978  GMC C25 SUBURBAN

    • 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: (1) Without smog injection or injection heads.; 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: (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.; Emissions Notes: NOT LEGAL FOR STREET USE: Not applicable or intended for street or highway use on '75-later vehicles. Legal for racing only, and never used on a highway or public road.
    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SIERRA CLASSIC
    • Engine Vin: U
    • CUI: 305
    • EngineType: V8 ( 5 L / 305 )

    1970-1971  GMC C25/C2500 SUBURBAN

    • 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: (1) Without smog injection or injection heads.; 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.; Emissions Notes: 1974 and earlier vehicles WITHOUT A.I.R.: Legal for use on '74-earlier vehicles without A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed.
    • Liter: 4.1
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: N
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1975  GMC C15

    • 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: (1) Without smog injection or injection heads.; 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: (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.; Emissions Notes: NOT LEGAL FOR STREET USE: Not applicable or intended for street or highway use on '75-later vehicles. Legal for racing only, and never used on a highway or public road.
    • Liter: 7.4
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SIERRA CLASSIC
    • Engine Vin: Z
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1969-1970  CHEVROLET C20 SUBURBAN

    • 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: (1) Without smog injection or injection heads.; 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.; Emissions Notes: 1974 and earlier vehicles WITHOUT A.I.R.: Legal for use on '74-earlier vehicles without A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed.
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: E
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1975-1980  CHEVROLET C20 SUBURBAN

    • 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: (1) Without smog injection or injection heads.; 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: (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.; Emissions Notes: NOT LEGAL FOR STREET USE: Not applicable or intended for street or highway use on '75-later vehicles. Legal for racing only, and never used on a highway or public road.
    • Liter: 4.8
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SCOTTSDALE
    • Engine Vin: T
    • CUI: 292
    • EngineType: L6 ( 4.8 L / 292 )

    1973-1974  GMC C15/C1500 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: (1) Without smog injection or injection heads.; 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: (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.; Emissions Notes: 1974 and earlier vehicles WITHOUT A.I.R.: Legal for use on '74-earlier vehicles without A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed.
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: Y
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1975-1978  GMC C35

    • 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: (1) Without smog injection or injection heads.; 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: (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.; Emissions Notes: NOT LEGAL FOR STREET USE: Not applicable or intended for street or highway use on '75-later vehicles. Legal for racing only, and never used on a highway or public road.
    • Liter: 4.8
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: T
    • CUI: 292
    • EngineType: L6 ( 4.8 L / 292 )

    1975  CHEVROLET C20 SUBURBAN

    • 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: (1) Without smog injection or injection heads.; 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: (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.; Emissions Notes: NOT LEGAL FOR STREET USE: Not applicable or intended for street or highway use on '75-later vehicles. Legal for racing only, and never used on a highway or public road.
    • Liter: 7.4
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: CUSTOM DELUXE
    • Engine Vin: Z
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1975  GMC C15 SUBURBAN

    • 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: (1) Without smog injection or injection heads.; 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: (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.; Emissions Notes: NOT LEGAL FOR STREET USE: Not applicable or intended for street or highway use on '75-later vehicles. Legal for racing only, and never used on a highway or public road.
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SIERRA CLASSIC
    • Engine Vin: Y
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1972  CHEVROLET C10 SUBURBAN

    • 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: (1) Without smog injection or injection heads.; 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.; Emissions Notes: 1974 and earlier vehicles WITHOUT A.I.R.: Legal for use on '74-earlier vehicles without A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed.
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: H
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1976-1978  GMC C15 SUBURBAN

    • 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: (1) Without smog injection or injection heads.; 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: (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.; Emissions Notes: NOT LEGAL FOR STREET USE: Not applicable or intended for street or highway use on '75-later vehicles. Legal for racing only, and never used on a highway or public road.
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: HIGH SIERRA
    • Engine Vin: L
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1968  GMC C35/C3500 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: (1) Without smog injection or injection heads.; 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.; Emissions Notes: 1974 and earlier vehicles WITHOUT A.I.R.: Legal for use on '74-earlier vehicles without A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed.
    • Liter: 5.3
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: -
    • CUI: 327
    • EngineType: V8 ( 5.3 L / 327 )

    1969-1972  GMC C25/C2500 SUBURBAN

    • 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: (1) Without smog injection or injection heads.; 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.; Emissions Notes: 1974 and earlier vehicles WITHOUT A.I.R.: Legal for use on '74-earlier vehicles without A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed.
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: -
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1968  GMC C15/C1500 SUBURBAN

    • 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: (1) Without smog injection or injection heads.; 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.; Emissions Notes: 1974 and earlier vehicles WITHOUT A.I.R.: Legal for use on '74-earlier vehicles without A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed.
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: -
    • CUI: 351
    • EngineType: V6 ( 5.7 L / 351 )

    1984  GMC C2500 SUBURBAN

    • 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: (1) Without smog injection or injection heads.; 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: (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.; Emissions Notes: NOT LEGAL FOR STREET USE: Not applicable or intended for street or highway use on '75-later vehicles. Legal for racing only, and never used on a highway or public road.
    • Liter: 4.8
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: HIGH SIERRA
    • Engine Vin: T
    • CUI: 292
    • EngineType: L6 ( 4.8 L / 292 )

    1978  GMC C35

    • 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: (1) Without smog injection or injection heads.; 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: (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.; Emissions Notes: NOT LEGAL FOR STREET USE: Not applicable or intended for street or highway use on '75-later vehicles. Legal for racing only, and never used on a highway or public road.
    • Liter: 4.1
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SIERRA CLASSIC
    • Engine Vin: D
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1987-1988  CHEVROLET R20 SUBURBAN

    • 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: (1) Without smog injection or injection heads.; 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: (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.; Emissions Notes: NOT LEGAL FOR STREET USE: Not applicable or intended for street or highway use on '75-later vehicles. Legal for racing only, and never used on a highway or public road.
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SCOTTSDALE
    • Engine Vin: K
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1971  GMC C25/C2500 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: (1) Without smog injection or injection heads.; 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.; Emissions Notes: 1974 and earlier vehicles WITHOUT A.I.R.: Legal for use on '74-earlier vehicles without A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed.
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: B
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1973-1974  CHEVROLET C10 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: (1) Without smog injection or injection heads.; 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: (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.; Emissions Notes: 1974 and earlier vehicles WITHOUT A.I.R.: Legal for use on '74-earlier vehicles without A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed.
    • Liter: 4.8
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: T
    • CUI: 292
    • EngineType: L6 ( 4.8 L / 292 )

    1991  GMC C2500

    • 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: (1) Without smog injection or injection heads.; 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: (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.; Emissions Notes: NOT LEGAL FOR STREET USE: Not applicable or intended for street or highway use on '75-later vehicles. Legal for racing only, and never used on a highway or public road.
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SIERRA SLE
    • Engine Vin: K
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1977-1978  GMC C15

    • 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: (1) Without smog injection or injection heads.; 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: (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.; Emissions Notes: NOT LEGAL FOR STREET USE: Not applicable or intended for street or highway use on '75-later vehicles. Legal for racing only, and never used on a highway or public road.
    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: U
    • CUI: 305
    • EngineType: V8 ( 5 L / 305 )

    1976  CHEVROLET C20 SUBURBAN

    • 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: (1) Without smog injection or injection heads.; 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: (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.; Emissions Notes: NOT LEGAL FOR STREET USE: Not applicable or intended for street or highway use on '75-later vehicles. Legal for racing only, and never used on a highway or public road.
    • Liter: 6.6
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SILVERADO
    • Engine Vin: U
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1979-1980  GMC C1500 SUBURBAN

    • 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: (1) Without smog injection or injection heads.; 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: (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.; Emissions Notes: NOT LEGAL FOR STREET USE: Not applicable or intended for street or highway use on '75-later vehicles. Legal for racing only, and never used on a highway or public road.
    • Liter: 7.4
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: HIGH SIERRA
    • Engine Vin: S
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1988-1991  GMC C3500

    • 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: (1) Without smog injection or injection heads.; 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: (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.; Emissions Notes: NOT LEGAL FOR STREET USE: Not applicable or intended for street or highway use on '75-later vehicles. Legal for racing only, and never used on a highway or public road.
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SIERRA SLE
    • Engine Vin: K
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1979-1980  GMC C1500

    • 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: (1) Without smog injection or injection heads.; 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: (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.; Emissions Notes: NOT LEGAL FOR STREET USE: Not applicable or intended for street or highway use on '75-later vehicles. Legal for racing only, and never used on a highway or public road.
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: HEAVY HALF
    • Engine Vin: L
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1968-1971  GMC C25/C2500 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: (1) Without smog injection or injection heads.; 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.; Emissions Notes: 1974 and earlier vehicles WITHOUT A.I.R.: Legal for use on '74-earlier vehicles without A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed.
    • Liter: 4.8
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: -
    • CUI: 292
    • EngineType: L6 ( 4.8 L / 292 )

    1978-1980  CHEVROLET C10

    • 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: (1) Without smog injection or injection heads.; 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: (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.; Emissions Notes: NOT LEGAL FOR STREET USE: Not applicable or intended for street or highway use on '75-later vehicles. Legal for racing only, and never used on a highway or public road.
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SILVERADO
    • Engine Vin: Z
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1987  GMC R2500

    • 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: (1) Without smog injection or injection heads.; 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: (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.; Emissions Notes: NOT LEGAL FOR STREET USE: Not applicable or intended for street or highway use on '75-later vehicles. Legal for racing only, and never used on a highway or public road.
    • Liter: 4.3
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SIERRA CLASSIC
    • Engine Vin: Z
    • CUI: 262
    • EngineType: V6 ( 4.3 L / 262 )

    1975  GMC C35

    • 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: (1) Without smog injection or injection heads.; 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: (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.; Emissions Notes: NOT LEGAL FOR STREET USE: Not applicable or intended for street or highway use on '75-later vehicles. Legal for racing only, and never used on a highway or public road.
    • Liter: 4.1
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: Q
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    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: No; Manual Transmission - Floor: Yes; Footnotes: (1) Without smog injection or injection heads.; 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: (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.; Emissions Notes: 1974 and earlier vehicles WITHOUT A.I.R.: Legal for use on '74-earlier vehicles without A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed.
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: -
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1975  CHEVROLET C20

    • 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: (1) Without smog injection or injection heads.; 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: (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.; Emissions Notes: NOT LEGAL FOR STREET USE: Not applicable or intended for street or highway use on '75-later vehicles. Legal for racing only, and never used on a highway or public road.
    • Liter: 7.4
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SCOTTSDALE
    • Engine Vin: Z
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1977-1978  GMC C25

    • 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: (1) Without smog injection or injection heads.; 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: (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.; Emissions Notes: NOT LEGAL FOR STREET USE: Not applicable or intended for street or highway use on '75-later vehicles. Legal for racing only, and never used on a highway or public road.
    • Liter: 6.6
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SIERRA CLASSIC
    • Engine Vin: R
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1980  CHEVROLET C10 SUBURBAN

    • 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: (1) Without smog injection or injection heads.; 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: (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.; Emissions Notes: NOT LEGAL FOR STREET USE: Not applicable or intended for street or highway use on '75-later vehicles. Legal for racing only, and never used on a highway or public road.
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SCOTTSDALE
    • Engine Vin: M
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1979-1980  GMC C1500

    • 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: (1) Without smog injection or injection heads.; 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: (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.; Emissions Notes: NOT LEGAL FOR STREET USE: Not applicable or intended for street or highway use on '75-later vehicles. Legal for racing only, and never used on a highway or public road.
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: Z
    • 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: No; Manual Transmission - Floor: Yes; Footnotes: (1) Without smog injection or injection heads.; 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: (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.; Emissions Notes: 1974 and earlier vehicles WITHOUT A.I.R.: Legal for use on '74-earlier vehicles without A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed.
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: -
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1975-1980  CHEVROLET C10

    • 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: (1) Without smog injection or injection heads.; 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: (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.; Emissions Notes: NOT LEGAL FOR STREET USE: Not applicable or intended for street or highway use on '75-later vehicles. Legal for racing only, and never used on a highway or public road.
    • Liter: 4.8
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SILVERADO
    • Engine Vin: T
    • CUI: 292
    • EngineType: L6 ( 4.8 L / 292 )

    1979-1980  GMC C2500 SUBURBAN

    • 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: (1) Without smog injection or injection heads.; 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: (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.; Emissions Notes: NOT LEGAL FOR STREET USE: Not applicable or intended for street or highway use on '75-later vehicles. Legal for racing only, and never used on a highway or public road.
    • Liter: 7.4
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SIERRA GRANDE
    • Engine Vin: S
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1976  GMC C15

    • 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: (1) Without smog injection or injection heads.; 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: (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.; Emissions Notes: NOT LEGAL FOR STREET USE: Not applicable or intended for street or highway use on '75-later vehicles. Legal for racing only, and never used on a highway or public road.
    • Liter: 6.6
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: HIGH SIERRA
    • Engine Vin: U
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1981  CHEVROLET C20 SUBURBAN

    • 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: (1) Without smog injection or injection heads.; 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: (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.; Emissions Notes: NOT LEGAL FOR STREET USE: Not applicable or intended for street or highway use on '75-later vehicles. Legal for racing only, and never used on a highway or public road.
    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: DELUXE
    • Engine Vin: H
    • CUI: 305
    • EngineType: V8 ( 5 L / 305 )

    1979-1980  GMC C3500

    • 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: (1) Without smog injection or injection heads.; 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: (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.; Emissions Notes: NOT LEGAL FOR STREET USE: Not applicable or intended for street or highway use on '75-later vehicles. Legal for racing only, and never used on a highway or public road.
    • Liter: 4.1
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SIERRA GRANDE
    • Engine Vin: D
    • 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: No; Manual Transmission - Floor: Yes; Footnotes: (1) Without smog injection or injection heads.; 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: (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.; Emissions Notes: NOT LEGAL FOR STREET USE: Not applicable or intended for street or highway use on '75-later vehicles. Legal for racing only, and never used on a highway or public road.
    • Liter: 7.4
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: N
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1973-1974  CHEVROLET C20 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: (1) Without smog injection or injection heads.; 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: (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.; Emissions Notes: 1974 and earlier vehicles WITHOUT A.I.R.: Legal for use on '74-earlier vehicles without A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed.
    • Liter: 4.8
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: T
    • CUI: 292
    • EngineType: L6 ( 4.8 L / 292 )

    1971  CHEVROLET C10 SUBURBAN

    • 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: (1) Without smog injection or injection heads.; 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.; Emissions Notes: 1974 and earlier vehicles WITHOUT A.I.R.: Legal for use on '74-earlier vehicles without A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed.
    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: P
    • CUI: 307
    • EngineType: V8 ( 5 L / 307 )

    1976-1978  GMC C25 SUBURBAN

    • 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: (1) Without smog injection or injection heads.; 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: (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.; Emissions Notes: NOT LEGAL FOR STREET USE: Not applicable or intended for street or highway use on '75-later vehicles. Legal for racing only, and never used on a highway or public road.
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SIERRA CLASSIC
    • Engine Vin: L
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1971-1972  CHEVROLET C10 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: (1) Without smog injection or injection heads.; 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.; Emissions Notes: 1974 and earlier vehicles WITHOUT A.I.R.: Legal for use on '74-earlier vehicles without A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed.
    • Liter: 4.1
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: L
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1975  GMC C15

    • 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: (1) Without smog injection or injection heads.; 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: (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.; Emissions Notes: NOT LEGAL FOR STREET USE: Not applicable or intended for street or highway use on '75-later vehicles. Legal for racing only, and never used on a highway or public road.
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: HIGH SIERRA
    • Engine Vin: Y
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1977-1978  GMC C15 SUBURBAN

    • 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: (1) Without smog injection or injection heads.; 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: (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.; Emissions Notes: NOT LEGAL FOR STREET USE: Not applicable or intended for street or highway use on '75-later vehicles. Legal for racing only, and never used on a highway or public road.
    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SIERRA CLASSIC
    • Engine Vin: U
    • CUI: 305
    • EngineType: V8 ( 5 L / 305 )

    1970  CHEVROLET C10 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: (1) Without smog injection or injection heads.; 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.; Emissions Notes: 1974 and earlier vehicles WITHOUT A.I.R.: Legal for use on '74-earlier vehicles without A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed.
    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: B
    • 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: No; Manual Transmission - Floor: Yes; Footnotes: (1) Without smog injection or injection heads.; 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.; Emissions Notes: 1974 and earlier vehicles WITHOUT A.I.R.: Legal for use on '74-earlier vehicles without A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed.
    • Liter: 4.1
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: P
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1975-1978  GMC C25

    • 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: (1) Without smog injection or injection heads.; 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: (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.; Emissions Notes: NOT LEGAL FOR STREET USE: Not applicable or intended for street or highway use on '75-later vehicles. Legal for racing only, and never used on a highway or public road.
    • Liter: 4.8
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SIERRA CLASSIC
    • Engine Vin: T
    • CUI: 292
    • EngineType: L6 ( 4.8 L / 292 )

    1981-1986  CHEVROLET C20

    • 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: (1) Without smog injection or injection heads.; 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: (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.; Emissions Notes: NOT LEGAL FOR STREET USE: Not applicable or intended for street or highway use on '75-later vehicles. Legal for racing only, and never used on a highway or public road.
    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SILVERADO
    • Engine Vin: H
    • CUI: 305
    • EngineType: V8 ( 5 L / 305 )

    1980-1986  CHEVROLET C30

    • 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: (1) Without smog injection or injection heads.; 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: (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.; Emissions Notes: NOT LEGAL FOR STREET USE: Not applicable or intended for street or highway use on '75-later vehicles. Legal for racing only, and never used on a highway or public road.
    • Liter: 7.4
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SILVERADO
    • Engine Vin: W
    • 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: No; Manual Transmission - Floor: Yes; Footnotes: (1) Without smog injection or injection heads.; 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: (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.; Emissions Notes: NOT LEGAL FOR STREET USE: Not applicable or intended for street or highway use on '75-later vehicles. Legal for racing only, and never used on a highway or public road.
    • Liter: 7.4
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: CUSTOM DELUXE
    • Engine Vin: N
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1973-1974  GMC C25/C2500 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: (1) Without smog injection or injection heads.; 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: (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.; Emissions Notes: 1974 and earlier vehicles WITHOUT A.I.R.: Legal for use on '74-earlier vehicles without A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed.
    • Liter: 4.8
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: T
    • CUI: 292
    • EngineType: L6 ( 4.8 L / 292 )

    1973-1974  CHEVROLET C10 SUBURBAN

    • 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: (1) Without smog injection or injection heads.; 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: (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.; Emissions Notes: 1974 and earlier vehicles WITHOUT A.I.R.: Legal for use on '74-earlier vehicles without A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed.
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: -
    • 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: No; Manual Transmission - Floor: Yes; Footnotes: (1) Without smog injection or injection heads.; 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: (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.; Emissions Notes: 1974 and earlier vehicles WITHOUT A.I.R.: Legal for use on '74-earlier vehicles without A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed.
    • Liter: 7.4
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: L
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1979  GMC C1500

    • 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: (1) Without smog injection or injection heads.; 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: (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.; Emissions Notes: NOT LEGAL FOR STREET USE: Not applicable or intended for street or highway use on '75-later vehicles. Legal for racing only, and never used on a highway or public road.
    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SIERRA CLASSIC
    • Engine Vin: U
    • CUI: 305
    • EngineType: V8 ( 5 L / 305 )

    1968  GMC C15/C1500 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: (1) Without smog injection or injection heads.; 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.; Emissions Notes: 1974 and earlier vehicles WITHOUT A.I.R.: Legal for use on '74-earlier vehicles without A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed.
    • Liter: 5.3
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: E
    • CUI: 327
    • EngineType: V8 ( 5.3 L / 327 )

    1975  CHEVROLET C20

    • 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: (1) Without smog injection or injection heads.; 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: (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.; Emissions Notes: NOT LEGAL FOR STREET USE: Not applicable or intended for street or highway use on '75-later vehicles. Legal for racing only, and never used on a highway or public road.
    • Liter: 4.1
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SCOTTSDALE
    • Engine Vin: Q
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1979-1980  GMC C1500

    • 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: (1) Without smog injection or injection heads.; 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: (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.; Emissions Notes: NOT LEGAL FOR STREET USE: Not applicable or intended for street or highway use on '75-later vehicles. Legal for racing only, and never used on a highway or public road.
    • Liter: 7.4
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: STREET COUPE
    • Engine Vin: S
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1969-1972  GMC C25/C2500 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: (1) Without smog injection or injection heads.; 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.; Emissions Notes: 1974 and earlier vehicles WITHOUT A.I.R.: Legal for use on '74-earlier vehicles without A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed.
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: -
    • 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: No; Manual Transmission - Floor: Yes; Footnotes: (1) Without smog injection or injection heads.; 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: (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.; Emissions Notes: NOT LEGAL FOR STREET USE: Not applicable or intended for street or highway use on '75-later vehicles. Legal for racing only, and never used on a highway or public road.
    • Liter: 7.4
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: S
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1979-1980  GMC C1500 SUBURBAN

    • 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: (1) Without smog injection or injection heads.; 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: (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.; Emissions Notes: NOT LEGAL FOR STREET USE: Not applicable or intended for street or highway use on '75-later vehicles. Legal for racing only, and never used on a highway or public road.
    • Liter: 7.4
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SIERRA CLASSIC
    • Engine Vin: S
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1980  CHEVROLET C20

    • 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: (1) Without smog injection or injection heads.; 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: (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.; Emissions Notes: NOT LEGAL FOR STREET USE: Not applicable or intended for street or highway use on '75-later vehicles. Legal for racing only, and never used on a highway or public road.
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: CHEYENNE
    • Engine Vin: P
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1980  CHEVROLET C20

    • 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: (1) Without smog injection or injection heads.; 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: (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.; Emissions Notes: NOT LEGAL FOR STREET USE: Not applicable or intended for street or highway use on '75-later vehicles. Legal for racing only, and never used on a highway or public road.
    • Liter: 6.6
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: CHEYENNE
    • Engine Vin: X
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1988-1991  GMC C3500

    • 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: (1) Without smog injection or injection heads.; 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: (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.; Emissions Notes: NOT LEGAL FOR STREET USE: Not applicable or intended for street or highway use on '75-later vehicles. Legal for racing only, and never used on a highway or public road.
    • Liter: 7.4
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SIERRA SLX
    • Engine Vin: N
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1980  GMC C2500 SUBURBAN

    • 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: (1) Without smog injection or injection heads.; 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: (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.; Emissions Notes: NOT LEGAL FOR STREET USE: Not applicable or intended for street or highway use on '75-later vehicles. Legal for racing only, and never used on a highway or public road.
    • Liter: 6.6
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: HIGH SIERRA
    • Engine Vin: X
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1977-1979  CHEVROLET C30

    • 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: (1) Without smog injection or injection heads.; 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: (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.; Emissions Notes: NOT LEGAL FOR STREET USE: Not applicable or intended for street or highway use on '75-later vehicles. Legal for racing only, and never used on a highway or public road.
    • Liter: 6.6
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: CHEYENNE
    • Engine Vin: R
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1987-1988  CHEVROLET R30

    • 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: (1) Without smog injection or injection heads.; 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: (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.; Emissions Notes: NOT LEGAL FOR STREET USE: Not applicable or intended for street or highway use on '75-later vehicles. Legal for racing only, and never used on a highway or public road.
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SCOTTSDALE
    • Engine Vin: M
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1987-1988  CHEVROLET R20 SUBURBAN

    • 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: (1) Without smog injection or injection heads.; 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: (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.; Emissions Notes: NOT LEGAL FOR STREET USE: Not applicable or intended for street or highway use on '75-later vehicles. Legal for racing only, and never used on a highway or public road.
    • Liter: 6.2
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SCOTTSDALE
    • Engine Vin: J
    • CUI: 379
    • EngineType: V8 ( 6.2 L / 379 )

    1979-1986  GMC C3500

    • 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: (1) Without smog injection or injection heads.; 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: (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.; Emissions Notes: NOT LEGAL FOR STREET USE: Not applicable or intended for street or highway use on '75-later vehicles. Legal for racing only, and never used on a highway or public road.
    • Liter: 4.8
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SIERRA CLASSIC
    • Engine Vin: T
    • CUI: 292
    • EngineType: L6 ( 4.8 L / 292 )

    1982-1986  GMC C2500

    • 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: (1) Without smog injection or injection heads.; 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: (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.; Emissions Notes: NOT LEGAL FOR STREET USE: Not applicable or intended for street or highway use on '75-later vehicles. Legal for racing only, and never used on a highway or public road.
    • Liter: 6.2
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: HIGH SIERRA
    • Engine Vin: J
    • CUI: 379
    • EngineType: V8 ( 6.2 L / 379 )

    1968-1969  CHEVROLET C20 SUBURBAN

    • 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: (1) Without smog injection or injection heads.; 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.; Emissions Notes: 1974 and earlier vehicles WITHOUT A.I.R.: Legal for use on '74-earlier vehicles without A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed.
    • Liter: 5.3
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: -
    • CUI: 327
    • EngineType: V8 ( 5.3 L / 327 )

    1969-1972  GMC C15/C1500 SUBURBAN

    • 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: (1) Without smog injection or injection heads.; 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.; Emissions Notes: 1974 and earlier vehicles WITHOUT A.I.R.: Legal for use on '74-earlier vehicles without A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed.
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: -
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1969-1972  GMC C25/C2500 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: (1) Without smog injection or injection heads.; 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.; Emissions Notes: 1974 and earlier vehicles WITHOUT A.I.R.: Legal for use on '74-earlier vehicles without A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed.
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: -
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1968-1969  GMC C25/C2500 SUBURBAN

    • 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: (1) Without smog injection or injection heads.; 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.; Emissions Notes: 1974 and earlier vehicles WITHOUT A.I.R.: Legal for use on '74-earlier vehicles without A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed.
    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: -
    • CUI: 305
    • EngineType: V6 ( 5 L / 305 )

    1979-1980  GMC C1500

    • 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: (1) Without smog injection or injection heads.; 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: (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.; Emissions Notes: NOT LEGAL FOR STREET USE: Not applicable or intended for street or highway use on '75-later vehicles. Legal for racing only, and never used on a highway or public road.
    • Liter: 4.8
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: HIGH SIERRA
    • Engine Vin: T
    • CUI: 292
    • EngineType: L6 ( 4.8 L / 292 )

    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: No; Manual Transmission - Floor: Yes; Footnotes: (1) Without smog injection or injection heads.; 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: (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.; Emissions Notes: 1974 and earlier vehicles WITHOUT A.I.R.: Legal for use on '74-earlier vehicles without A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed.
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: W
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1972  GMC C35/C3500 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: (1) Without smog injection or injection heads.; 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.; Emissions Notes: 1974 and earlier vehicles WITHOUT A.I.R.: Legal for use on '74-earlier vehicles without A.I.R.. Considered OEM replacement part, and do not require EO, when existing emission controls are not removed.
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: H
    • 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.