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Hedman 69820

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

Hedman 69820

500-69820

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$468.99
$443.99
ON SALE - $25.00 OFF
Hedman 69820 Elite Ultra-Duty HTC Coated Full Length Headers 1968-91 Blazer/Jimmy/Suburban/Pickup 396-454 $443.99
Elite Ultra-Duty HTC Coated Full Length Headers
  • 1968-91 Blazer/Jimmy/Suburban/Pickup 396-454
  • Tube Size: 1-3/4"
  • Collector Size: 3"

  • Hedman 69820 Details

    GM Trucks/Vans/Motorhomes

  • Not applicable or intended for street or highway use. Legal only for racing vehicles which may never be used upon a highway.
  • Without smog injection or injection heads.
  • Modification to stock exhaust required to retain catalytic converter.
  • Not legal for sale or use in California on pollution controlled motor vehicles.
  • Must use factory big block chevy hardware & mounts.
  • Must use 1975 and later model clutch linkage located at rear of engine.
  • Due to clyinder heads (aluminum) generation 6 engines, 502 BB Chevy will have clearance problems on some applications. Bottom of hedder flanges may hit head bolts. Notching may be necessary.
  • Elite replacement gasket #500-27550.

  • Specifications:

    Tube Size
    1.75
    Collector Tube Size (in.)
    3
    Application
    Automotive
    Engine Make/Size
    Chevy Big Block (396-454)
    Tube Direction
    Down Swept
    Coating/Finish
    Metallic Ceramic
    Port Shape
    Rectangle
    Material
    Mild Steel
    Collector Diameter (in.)
    3
    Gaskets Included
    Yes
    Bolts/Studs Included
    Yes
    Catalytic Converter(s) Included
    No
    Collector Attachment
    Ball and socket flange
    Cross Over Pipe Included
    No
    Cylinder Head Port Shape
    Rectangular
    Header Finish
    Thermal coated
    Header Material
    Steel
    Header Style
    Full-length
    Motor Mounts Included
    No
    Primary Tube Diameter (in.)
    1 3/4
    Primary Tube Gauge
    14-gauge
    Quantity
    Sold as a pair
    Reducers Included
    Yes
    Transmission Mount Included
    No
    Tuned
    No
    Weld-Up
    No
    Flange Style
    Standard
    Manufacturer's Part Number:
    69820

    Do It Once, Do It Right

    Hedman Elite Headers are the best you can buy. They have thicker flanges, stronger tubing, and thermal coating to withstand full-throttle thrashing and torturous towing. Their extreme-duty construction protects against burnout and exhaust leaks caused by the excessive heat and vibration of high-performance applications. Elite Headers outlast and outperform ordinary headers. All Hedman street headers are made in the USA with a 5-year coating warranty and lifetime product defect warranty.

    Note: Installing coated headers on an engine during the break-in period will cause discoloration. It is recommended that the factory manifolds or an old set of headers are used while breaking in an engine.

    Features
    • Hefty 3/8" flanges
    • Shorty or full-length design
    • Thick wall 14-gauge primary tubes
    • Built to withstand tough applications
    • HTC thermal coating with 5-year warranty
    • Lifetime warranty against manufacturing defects
    • Made in USA

    Does Hedman 69820 fit your vehicle?

    Narrow Results

    1984-1986 CHEVROLET C20 SUBURBAN

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Use Factory Big Block Hardware And Mounts~Must Use 1975 And Later Model Clutch Linkage Located At Rear Of Engine~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Designed For Use With A Trans-Dapt Throttle Body Spacer~502 Big Block Chevy Will Have Clearance Problems On Some Applications~Mild Steel
    • Liter: 7.4
    • SubModel: SCOTTSDALE
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1973 GMC C25/C2500 SUBURBAN

    • CC: 7439
    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Use Factory Big Block Hardware And Mounts~Must Use 1975 And Later Model Clutch Linkage Located At Rear Of Engine~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Designed For Use With A Trans-Dapt Throttle Body Spacer~502 Big Block Chevy Will Have Clearance Problems On Some Applications~Mild Steel
    • Liter: 7.4
    • SubModel: BASE
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1973-1974 GMC C15/C1500 SUBURBAN

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Use Factory Big Block Hardware And Mounts~Must Use 1975 And Later Model Clutch Linkage Located At Rear Of Engine~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Mild Steel
    • Liter: 7.4
    • SubModel: BASE
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1979-1982 GMC C2500 SUBURBAN

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Use Factory Big Block Hardware And Mounts~Must Use 1975 And Later Model Clutch Linkage Located At Rear Of Engine~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Designed For Use With A Trans-Dapt Throttle Body Spacer~502 Big Block Chevy Will Have Clearance Problems On Some Applications~Mild Steel
    • Liter: 7.4
    • SubModel: SIERRA GRANDE
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1973-1980 GMC C1500 PICKUP

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Use Factory Big Block Hardware And Mounts~Must Use 1975 And Later Model Clutch Linkage Located At Rear Of Engine~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Mild Steel
    • Liter: 7.4
    • SubModel: BASE
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1968 GMC K15/K1500 SUBURBAN

    • CC: 6489
    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Use Factory Big Block Hardware And Mounts~Must Use 1975 And Later Model Clutch Linkage Located At Rear Of Engine~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Mild Steel
    • Liter: 6.5
    • SubModel: BASE
    • CUI: 396
    • EngineType: V8 ( 6.5 L / 396 )

    1973-1975 CHEVROLET C10 SUBURBAN

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Use Factory Big Block Hardware And Mounts~Must Use 1975 And Later Model Clutch Linkage Located At Rear Of Engine~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Mild Steel
    • Liter: 7.4
    • SubModel: BASE
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1975-1980 CHEVROLET C20 SUBURBAN

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Use Factory Big Block Hardware And Mounts~Must Use 1975 And Later Model Clutch Linkage Located At Rear Of Engine~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Designed For Use With A Trans-Dapt Throttle Body Spacer~502 Big Block Chevy Will Have Clearance Problems On Some Applications~Mild Steel
    • Liter: 7.4
    • SubModel: CUSTOM DELUXE
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1968 GMC C25/C2500 SUBURBAN

    • CC: 6489
    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Use Factory Big Block Hardware And Mounts~Must Use 1975 And Later Model Clutch Linkage Located At Rear Of Engine~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Designed For Use With A Trans-Dapt Throttle Body Spacer~502 Big Block Chevy Will Have Clearance Problems On Some Applications~Mild Steel
    • Liter: 6.5
    • SubModel: BASE
    • CUI: 396
    • EngineType: V8 ( 6.5 L / 396 )

    1975-1986 CHEVROLET C20 PICKUP

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Use Factory Big Block Hardware And Mounts~Must Use 1975 And Later Model Clutch Linkage Located At Rear Of Engine~Will Not Fit 727 Torqueflite Transmission~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Designed For Use With A Trans-Dapt Throttle Body Spacer~502 Big Block Chevy Will Have Clearance Problems On Some Applications~Mild Steel
    • Liter: 7.4
    • SubModel: SCOTTSDALE
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1977 GMC C1500 PICKUP

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Use Factory Big Block Hardware And Mounts~Must Use 1975 And Later Model Clutch Linkage Located At Rear Of Engine~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Mild Steel
    • Liter: 7.4
    • SubModel: INDY HAULER
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1975-1977 CHEVROLET C20 SUBURBAN

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Use Factory Big Block Hardware And Mounts~Must Use 1975 And Later Model Clutch Linkage Located At Rear Of Engine~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Designed For Use With A Trans-Dapt Throttle Body Spacer~502 Big Block Chevy Will Have Clearance Problems On Some Applications~Mild Steel
    • Liter: 7.4
    • SubModel: SILVERADO
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1969 GMC C15/C1500 SUBURBAN

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Use Factory Big Block Hardware And Mounts~Must Use 1975 And Later Model Clutch Linkage Located At Rear Of Engine~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Mild Steel
    • Liter: 6.5
    • SubModel: BASE
    • CUI: 396
    • EngineType: V8 ( 6.5 L / 396 )

    1969 CHEVROLET K10 SUBURBAN

    • CC: 6489
    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Use Factory Big Block Hardware And Mounts~Must Use 1975 And Later Model Clutch Linkage Located At Rear Of Engine~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Mild Steel
    • Liter: 6.5
    • SubModel: BASE
    • CUI: 396
    • EngineType: V8 ( 6.5 L / 396 )

    1987-1988 CHEVROLET R20 SUBURBAN

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Use Factory Big Block Hardware And Mounts~Must Use 1975 And Later Model Clutch Linkage Located At Rear Of Engine~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Designed For Use With A Trans-Dapt Throttle Body Spacer~502 Big Block Chevy Will Have Clearance Problems On Some Applications~Mild Steel
    • Liter: 7.4
    • SubModel: SCOTTSDALE
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1969 GMC C25/C2500 SUBURBAN

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Use Factory Big Block Hardware And Mounts~Must Use 1975 And Later Model Clutch Linkage Located At Rear Of Engine~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Designed For Use With A Trans-Dapt Throttle Body Spacer~502 Big Block Chevy Will Have Clearance Problems On Some Applications~Mild Steel
    • Liter: 6.5
    • SubModel: BASE
    • CUI: 396
    • EngineType: V8 ( 6.5 L / 396 )

    1979-1980 GMC K1500 PICKUP

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Use Factory Big Block Hardware And Mounts~Must Use 1975 And Later Model Clutch Linkage Located At Rear Of Engine~Elite Replacement Gasket PN[27520]~Without Smog Injection Or Injection Heads~Mild Steel
    • Liter: 7.4
    • SubModel: SIERRA GRANDE
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1968 CHEVROLET C30 PICKUP

    • CC: 6489
    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Use Factory Big Block Hardware And Mounts~Must Use 1975 And Later Model Clutch Linkage Located At Rear Of Engine~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Designed For Use With A Trans-Dapt Throttle Body Spacer~502 Big Block Chevy Will Have Clearance Problems On Some Applications~Mild Steel
    • Liter: 6.5
    • SubModel: BASE
    • CUI: 396
    • EngineType: V8 ( 6.5 L / 396 )

    1972 CHEVROLET C20 SUBURBAN

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Use Factory Big Block Hardware And Mounts~Must Use 1975 And Later Model Clutch Linkage Located At Rear Of Engine~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Designed For Use With A Trans-Dapt Throttle Body Spacer~502 Big Block Chevy Will Have Clearance Problems On Some Applications~Mild Steel
    • Liter: 6.6
    • SubModel: BASE
    • CUI: 402
    • EngineType: V8 ( 6.6 L / 402 )

    1979-1980 GMC K1500 PICKUP

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Use Factory Big Block Hardware And Mounts~Must Use 1975 And Later Model Clutch Linkage Located At Rear Of Engine~Elite Replacement Gasket PN[27520]~Without Smog Injection Or Injection Heads~Mild Steel
    • Liter: 7.4
    • SubModel: SIERRA CLASSIC
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1979-1982 GMC C3500 PICKUP

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Use Factory Big Block Hardware And Mounts~Must Use 1975 And Later Model Clutch Linkage Located At Rear Of Engine~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Designed For Use With A Trans-Dapt Throttle Body Spacer~502 Big Block Chevy Will Have Clearance Problems On Some Applications~Mild Steel
    • Liter: 7.4
    • SubModel: SIERRA GRANDE
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1987-1988 CHEVROLET V20 SUBURBAN

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Use Factory Big Block Hardware And Mounts~Must Use 1975 And Later Model Clutch Linkage Located At Rear Of Engine~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Designed For Use With A Trans-Dapt Throttle Body Spacer~502 Big Block Chevy Will Have Clearance Problems On Some Applications~Mild Steel
    • Liter: 7.4
    • SubModel: SILVERADO
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1972 CHEVROLET K10 SUBURBAN

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Use Factory Big Block Hardware And Mounts~Must Use 1975 And Later Model Clutch Linkage Located At Rear Of Engine~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Mild Steel
    • Liter: 6.6
    • SubModel: BASE
    • CUI: 402
    • EngineType: V8 ( 6.6 L / 402 )

    1975-1980 CHEVROLET C10 SUBURBAN

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Use Factory Big Block Hardware And Mounts~Must Use 1975 And Later Model Clutch Linkage Located At Rear Of Engine~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Mild Steel
    • Liter: 7.4
    • SubModel: SCOTTSDALE
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1982 CHEVROLET C20 SUBURBAN

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Use Factory Big Block Hardware And Mounts~Must Use 1975 And Later Model Clutch Linkage Located At Rear Of Engine~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Designed For Use With A Trans-Dapt Throttle Body Spacer~502 Big Block Chevy Will Have Clearance Problems On Some Applications~Mild Steel
    • Liter: 7.4
    • SubModel: SCOTTSDALE
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1980 CHEVROLET K20 PICKUP

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Use Factory Big Block Hardware And Mounts~Must Use 1975 And Later Model Clutch Linkage Located At Rear Of Engine~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Designed For Use With A Trans-Dapt Throttle Body Spacer~502 Big Block Chevy Will Have Clearance Problems On Some Applications~Mild Steel
    • Liter: 7.4
    • SubModel: CUSTOM DELUXE
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1979 CHEVROLET K10 PICKUP

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Use Factory Big Block Hardware And Mounts~Must Use 1975 And Later Model Clutch Linkage Located At Rear Of Engine~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Mild Steel
    • Liter: 7.4
    • SubModel: CUSTOM DELUXE
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1973-1974 CHEVROLET C30 PICKUP

    • CC: 7441
    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Use Factory Big Block Hardware And Mounts~Must Use 1975 And Later Model Clutch Linkage Located At Rear Of Engine~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Designed For Use With A Trans-Dapt Throttle Body Spacer~502 Big Block Chevy Will Have Clearance Problems On Some Applications~Mild Steel
    • Liter: 7.4
    • SubModel: BASE
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1981 CHEVROLET C30 PICKUP

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Use Factory Big Block Hardware And Mounts~Must Use 1975 And Later Model Clutch Linkage Located At Rear Of Engine~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Designed For Use With A Trans-Dapt Throttle Body Spacer~502 Big Block Chevy Will Have Clearance Problems On Some Applications~Mild Steel
    • Liter: 7.4
    • SubModel: DELUXE
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1976 CHEVROLET K10 PICKUP

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Use Factory Big Block Hardware And Mounts~Must Use 1975 And Later Model Clutch Linkage Located At Rear Of Engine~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Mild Steel
    • Liter: 7.4
    • SubModel: SILVERADO
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1981-1986 CHEVROLET C20 SUBURBAN

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Use Factory Big Block Hardware And Mounts~Must Use 1975 And Later Model Clutch Linkage Located At Rear Of Engine~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Designed For Use With A Trans-Dapt Throttle Body Spacer~502 Big Block Chevy Will Have Clearance Problems On Some Applications~Mild Steel
    • Liter: 7.4
    • SubModel: CUSTOM
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1974 GMC JIMMY

    • CC: 7439
    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Use Factory Big Block Hardware And Mounts~Must Use 1975 And Later Model Clutch Linkage Located At Rear Of Engine~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Designed For Use With A Trans-Dapt Throttle Body Spacer~502 Big Block Chevy Will Have Clearance Problems On Some Applications~Mild Steel
    • Liter: 7.4
    • SubModel: BASE
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1989-1991 CHEVROLET R2500 SUBURBAN

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Use Factory Big Block Hardware And Mounts~Must Use 1975 And Later Model Clutch Linkage Located At Rear Of Engine~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Designed For Use With A Trans-Dapt Throttle Body Spacer~502 Big Block Chevy Will Have Clearance Problems On Some Applications~Mild Steel
    • Liter: 7.4
    • SubModel: SCOTTSDALE
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1976 GMC K1500 PICKUP

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Use Factory Big Block Hardware And Mounts~Must Use 1975 And Later Model Clutch Linkage Located At Rear Of Engine~Elite Replacement Gasket PN[27520]~Without Smog Injection Or Injection Heads~Mild Steel
    • Liter: 7.4
    • SubModel: BASE
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1975-1986 CHEVROLET C30 PICKUP

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Use Factory Big Block Hardware And Mounts~Must Use 1975 And Later Model Clutch Linkage Located At Rear Of Engine~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Designed For Use With A Trans-Dapt Throttle Body Spacer~502 Big Block Chevy Will Have Clearance Problems On Some Applications~Mild Steel
    • Liter: 7.4
    • SubModel: SCOTTSDALE
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1982-1986 CHEVROLET C20 SUBURBAN

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Use Factory Big Block Hardware And Mounts~Must Use 1975 And Later Model Clutch Linkage Located At Rear Of Engine~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Designed For Use With A Trans-Dapt Throttle Body Spacer~502 Big Block Chevy Will Have Clearance Problems On Some Applications~Mild Steel
    • Liter: 7.4
    • SubModel: SILVERADO
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1990 CHEVROLET V2500 SUBURBAN

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Use Factory Big Block Hardware And Mounts~Must Use 1975 And Later Model Clutch Linkage Located At Rear Of Engine~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Designed For Use With A Trans-Dapt Throttle Body Spacer~502 Big Block Chevy Will Have Clearance Problems On Some Applications~Mild Steel
    • Liter: 7.4
    • SubModel: SCOTTSDALE
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1976-1978 CHEVROLET K20 PICKUP

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Use Factory Big Block Hardware And Mounts~Must Use 1975 And Later Model Clutch Linkage Located At Rear Of Engine~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Designed For Use With A Trans-Dapt Throttle Body Spacer~502 Big Block Chevy Will Have Clearance Problems On Some Applications~Mild Steel
    • Liter: 7.4
    • SubModel: SCOTTSDALE
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1980 CHEVROLET K10 PICKUP

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Use Factory Big Block Hardware And Mounts~Must Use 1975 And Later Model Clutch Linkage Located At Rear Of Engine~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Mild Steel
    • Liter: 7.4
    • Aspiration: N
    • SubModel: SILVERADO
    • Engine Vin: S
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1968 CHEVROLET K20 PICKUP

    • CC: 6489
    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Use Factory Big Block Hardware And Mounts~Must Use 1975 And Later Model Clutch Linkage Located At Rear Of Engine~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Designed For Use With A Trans-Dapt Throttle Body Spacer~502 Big Block Chevy Will Have Clearance Problems On Some Applications~Mild Steel
    • Liter: 6.5
    • SubModel: BASE
    • CUI: 396
    • EngineType: V8 ( 6.5 L / 396 )

    1976-1978 CHEVROLET K20 PICKUP

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Use Factory Big Block Hardware And Mounts~Must Use 1975 And Later Model Clutch Linkage Located At Rear Of Engine~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Designed For Use With A Trans-Dapt Throttle Body Spacer~502 Big Block Chevy Will Have Clearance Problems On Some Applications~Mild Steel
    • Liter: 7.4
    • SubModel: CUSTOM DELUXE
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1974 CHEVROLET BLAZER

    • CC: 7439
    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Use Factory Big Block Hardware And Mounts~Must Use 1975 And Later Model Clutch Linkage Located At Rear Of Engine~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Designed For Use With A Trans-Dapt Throttle Body Spacer~502 Big Block Chevy Will Have Clearance Problems On Some Applications~Mild Steel
    • Liter: 7.4
    • SubModel: BASE
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1979 CHEVROLET K10 PICKUP

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Use Factory Big Block Hardware And Mounts~Must Use 1975 And Later Model Clutch Linkage Located At Rear Of Engine~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Mild Steel
    • Liter: 7.4
    • SubModel: SILVERADO
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1979-1980 GMC C1500 SUBURBAN

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Use Factory Big Block Hardware And Mounts~Must Use 1975 And Later Model Clutch Linkage Located At Rear Of Engine~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Mild Steel
    • Liter: 7.4
    • SubModel: SIERRA GRANDE
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1987 GMC R2500 SUBURBAN

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Use Factory Big Block Hardware And Mounts~Must Use 1975 And Later Model Clutch Linkage Located At Rear Of Engine~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Designed For Use With A Trans-Dapt Throttle Body Spacer~502 Big Block Chevy Will Have Clearance Problems On Some Applications~Mild Steel
    • Liter: 7.4
    • SubModel: HIGH SIERRA
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1975-1978 GMC C35/C3500 PICKUP

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Use Factory Big Block Hardware And Mounts~Must Use 1975 And Later Model Clutch Linkage Located At Rear Of Engine~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Designed For Use With A Trans-Dapt Throttle Body Spacer~502 Big Block Chevy Will Have Clearance Problems On Some Applications~Mild Steel
    • Liter: 7.4
    • SubModel: SIERRA GRANDE
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1975-1978 GMC C25/C2500 PICKUP

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Use Factory Big Block Hardware And Mounts~Must Use 1975 And Later Model Clutch Linkage Located At Rear Of Engine~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Designed For Use With A Trans-Dapt Throttle Body Spacer~502 Big Block Chevy Will Have Clearance Problems On Some Applications~Mild Steel
    • Liter: 7.4
    • SubModel: SIERRA GRANDE
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1968 CHEVROLET K10 SUBURBAN

    • CC: 6489
    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Use Factory Big Block Hardware And Mounts~Must Use 1975 And Later Model Clutch Linkage Located At Rear Of Engine~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Mild Steel
    • Liter: 6.5
    • SubModel: BASE
    • CUI: 396
    • EngineType: V8 ( 6.5 L / 396 )

    1980 CHEVROLET K20 PICKUP

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Use Factory Big Block Hardware And Mounts~Must Use 1975 And Later Model Clutch Linkage Located At Rear Of Engine~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Designed For Use With A Trans-Dapt Throttle Body Spacer~502 Big Block Chevy Will Have Clearance Problems On Some Applications~Mild Steel
    • Liter: 7.4
    • SubModel: CHEYENNE
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1975-1978 GMC C25 SUBURBAN

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Use Factory Big Block Hardware And Mounts~Must Use 1975 And Later Model Clutch Linkage Located At Rear Of Engine~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Designed For Use With A Trans-Dapt Throttle Body Spacer~502 Big Block Chevy Will Have Clearance Problems On Some Applications~Mild Steel
    • Liter: 7.4
    • SubModel: SIERRA GRANDE
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1975-1978 GMC C25 SUBURBAN

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Use Factory Big Block Hardware And Mounts~Must Use 1975 And Later Model Clutch Linkage Located At Rear Of Engine~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Designed For Use With A Trans-Dapt Throttle Body Spacer~502 Big Block Chevy Will Have Clearance Problems On Some Applications~Mild Steel
    • Liter: 7.4
    • SubModel: SIERRA CLASSIC
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1976 GMC JIMMY

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Use Factory Big Block Hardware And Mounts~Must Use 1975 And Later Model Clutch Linkage Located At Rear Of Engine~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Designed For Use With A Trans-Dapt Throttle Body Spacer~502 Big Block Chevy Will Have Clearance Problems On Some Applications~Mild Steel
    • Liter: 7.4
    • SubModel: SIERRA CLASSIC
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1975-1978 GMC C25/C2500 PICKUP

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Use Factory Big Block Hardware And Mounts~Must Use 1975 And Later Model Clutch Linkage Located At Rear Of Engine~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Designed For Use With A Trans-Dapt Throttle Body Spacer~502 Big Block Chevy Will Have Clearance Problems On Some Applications~Mild Steel
    • Liter: 7.4
    • SubModel: SIERRA CLASSIC
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1970-1972 GMC C15/C1500 SUBURBAN

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Use Factory Big Block Hardware And Mounts~Must Use 1975 And Later Model Clutch Linkage Located At Rear Of Engine~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Mild Steel
    • Liter: 6.6
    • SubModel: BASE
    • CUI: 402
    • EngineType: V8 ( 6.6 L / 402 )

    1978 CHEVROLET K5 BLAZER

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Use Factory Big Block Hardware And Mounts~Must Use 1975 And Later Model Clutch Linkage Located At Rear Of Engine~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Mild Steel
    • Liter: 7.4
    • SubModel: SILVERADO
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1987-1989 GMC R2500 PICKUP

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Use Factory Big Block Hardware And Mounts~Must Use 1975 And Later Model Clutch Linkage Located At Rear Of Engine~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Designed For Use With A Trans-Dapt Throttle Body Spacer~502 Big Block Chevy Will Have Clearance Problems On Some Applications~Mild Steel
    • Liter: 7.4
    • SubModel: BASE
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1969 GMC K1500 PICKUP

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Use Factory Big Block Hardware And Mounts~Must Use 1975 And Later Model Clutch Linkage Located At Rear Of Engine~Elite Replacement Gasket PN[27520]~Without Smog Injection Or Injection Heads~Mild Steel
    • Liter: 6.5
    • SubModel: BASE
    • CUI: 396
    • EngineType: V8 ( 6.5 L / 396 )

    1975-1978 GMC C15 SUBURBAN

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Use Factory Big Block Hardware And Mounts~Must Use 1975 And Later Model Clutch Linkage Located At Rear Of Engine~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Mild Steel
    • Liter: 7.4
    • SubModel: SIERRA CLASSIC
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1987-1989 GMC R2500 PICKUP

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Use Factory Big Block Hardware And Mounts~Must Use 1975 And Later Model Clutch Linkage Located At Rear Of Engine~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Designed For Use With A Trans-Dapt Throttle Body Spacer~502 Big Block Chevy Will Have Clearance Problems On Some Applications~Mild Steel
    • Liter: 7.4
    • SubModel: HIGH SIERRA
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1976-1977 GMC K25 SUBURBAN

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Use Factory Big Block Hardware And Mounts~Must Use 1975 And Later Model Clutch Linkage Located At Rear Of Engine~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Designed For Use With A Trans-Dapt Throttle Body Spacer~502 Big Block Chevy Will Have Clearance Problems On Some Applications~Mild Steel
    • Liter: 7.4
    • SubModel: BASE
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1970-1972 GMC K15/K1500 SUBURBAN

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Use Factory Big Block Hardware And Mounts~Must Use 1975 And Later Model Clutch Linkage Located At Rear Of Engine~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Mild Steel
    • Liter: 6.6
    • SubModel: BASE
    • CUI: 402
    • EngineType: V8 ( 6.6 L / 402 )

    1968 GMC C1500 PICKUP

    • CC: 6489
    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Use Factory Big Block Hardware And Mounts~Must Use 1975 And Later Model Clutch Linkage Located At Rear Of Engine~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Mild Steel
    • Liter: 6.5
    • SubModel: BASE
    • CUI: 396
    • EngineType: V8 ( 6.5 L / 396 )

    1976 GMC K1500 PICKUP

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Use Factory Big Block Hardware And Mounts~Must Use 1975 And Later Model Clutch Linkage Located At Rear Of Engine~Elite Replacement Gasket PN[27520]~Without Smog Injection Or Injection Heads~Mild Steel
    • Liter: 7.4
    • SubModel: SIERRA CLASSIC
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1970-1971 CHEVROLET C10 PICKUP

    • CC: 6588
    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Use Factory Big Block Hardware And Mounts~Must Use 1975 And Later Model Clutch Linkage Located At Rear Of Engine~Will Not Fit 727 Torqueflite Transmission~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Mild Steel
    • Liter: 6.6
    • SubModel: BASE
    • CUI: 402
    • EngineType: V8 ( 6.6 L / 402 )

    1968 GMC C35/C3500 PICKUP

    • CC: 6489
    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Use Factory Big Block Hardware And Mounts~Must Use 1975 And Later Model Clutch Linkage Located At Rear Of Engine~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Designed For Use With A Trans-Dapt Throttle Body Spacer~502 Big Block Chevy Will Have Clearance Problems On Some Applications~Mild Steel
    • Liter: 6.5
    • SubModel: BASE
    • CUI: 396
    • EngineType: V8 ( 6.5 L / 396 )

    1987-1991 GMC R2500 SUBURBAN

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Use Factory Big Block Hardware And Mounts~Must Use 1975 And Later Model Clutch Linkage Located At Rear Of Engine~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Designed For Use With A Trans-Dapt Throttle Body Spacer~502 Big Block Chevy Will Have Clearance Problems On Some Applications~Mild Steel
    • Liter: 7.4
    • SubModel: BASE
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1980 GMC C2500 SUBURBAN

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Use Factory Big Block Hardware And Mounts~Must Use 1975 And Later Model Clutch Linkage Located At Rear Of Engine~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Designed For Use With A Trans-Dapt Throttle Body Spacer~502 Big Block Chevy Will Have Clearance Problems On Some Applications~Mild Steel
    • Liter: 6.6
    • SubModel: SIERRA GRANDE
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1968 CHEVROLET K10 PICKUP

    • CC: 6489
    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Use Factory Big Block Hardware And Mounts~Must Use 1975 And Later Model Clutch Linkage Located At Rear Of Engine~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Mild Steel
    • Liter: 6.5
    • SubModel: BASE
    • CUI: 396
    • EngineType: V8 ( 6.5 L / 396 )

    1991 GMC C2500 PICKUP

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Use Factory Big Block Hardware And Mounts~Must Use 1975 And Later Model Clutch Linkage Located At Rear Of Engine~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Designed For Use With A Trans-Dapt Throttle Body Spacer~502 Big Block Chevy Will Have Clearance Problems On Some Applications~Mild Steel
    • Liter: 7.4
    • SubModel: SIERRA
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1980 CHEVROLET K20 PICKUP

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Use Factory Big Block Hardware And Mounts~Must Use 1975 And Later Model Clutch Linkage Located At Rear Of Engine~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Designed For Use With A Trans-Dapt Throttle Body Spacer~502 Big Block Chevy Will Have Clearance Problems On Some Applications~Mild Steel
    • Liter: 7.4
    • SubModel: SILVERADO
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1976 GMC K1500 PICKUP

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Use Factory Big Block Hardware And Mounts~Must Use 1975 And Later Model Clutch Linkage Located At Rear Of Engine~Elite Replacement Gasket PN[27520]~Without Smog Injection Or Injection Heads~Mild Steel
    • Liter: 7.4
    • SubModel: HIGH SIERRA
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1976-1978 CHEVROLET K20 PICKUP

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Use Factory Big Block Hardware And Mounts~Must Use 1975 And Later Model Clutch Linkage Located At Rear Of Engine~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Designed For Use With A Trans-Dapt Throttle Body Spacer~502 Big Block Chevy Will Have Clearance Problems On Some Applications~Mild Steel
    • Liter: 7.4
    • SubModel: SILVERADO
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1968 CHEVROLET C10 PICKUP

    • CC: 6489
    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Use Factory Big Block Hardware And Mounts~Must Use 1975 And Later Model Clutch Linkage Located At Rear Of Engine~Will Not Fit 727 Torqueflite Transmission~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Mild Steel
    • Liter: 6.5
    • SubModel: BASE
    • CUI: 396
    • EngineType: V8 ( 6.5 L / 396 )

    1979-1985 GMC C2500 PICKUP

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Use Factory Big Block Hardware And Mounts~Must Use 1975 And Later Model Clutch Linkage Located At Rear Of Engine~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Designed For Use With A Trans-Dapt Throttle Body Spacer~502 Big Block Chevy Will Have Clearance Problems On Some Applications~Mild Steel
    • Liter: 7.4
    • SubModel: SIERRA CLASSIC
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1990 CHEVROLET V2500 SUBURBAN

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Use Factory Big Block Hardware And Mounts~Must Use 1975 And Later Model Clutch Linkage Located At Rear Of Engine~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Designed For Use With A Trans-Dapt Throttle Body Spacer~502 Big Block Chevy Will Have Clearance Problems On Some Applications~Mild Steel
    • Liter: 7.4
    • SubModel: SILVERADO
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1980 CHEVROLET K10 PICKUP

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Use Factory Big Block Hardware And Mounts~Must Use 1975 And Later Model Clutch Linkage Located At Rear Of Engine~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Mild Steel
    • Liter: 7.4
    • Aspiration: N
    • SubModel: SCOTTSDALE
    • Engine Vin: S
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1976-1977 GMC K25 PICKUP

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Use Factory Big Block Hardware And Mounts~Must Use 1975 And Later Model Clutch Linkage Located At Rear Of Engine~Elite Replacement Gasket PN[27520]~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Designed For Use With A Trans-Dapt Throttle Body Spacer~502 Big Block Chevy Will Have Clearance Problems On Some Applications~Mild Steel
    • Liter: 7.4
    • SubModel: SIERRA GRANDE
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1975-1978 GMC C15 SUBURBAN

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Use Factory Big Block Hardware And Mounts~Must Use 1975 And Later Model Clutch Linkage Located At Rear Of Engine~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Mild Steel
    • Liter: 7.4
    • SubModel: BASE
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1981 CHEVROLET C20 SUBURBAN

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Use Factory Big Block Hardware And Mounts~Must Use 1975 And Later Model Clutch Linkage Located At Rear Of Engine~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Designed For Use With A Trans-Dapt Throttle Body Spacer~502 Big Block Chevy Will Have Clearance Problems On Some Applications~Mild Steel
    • Liter: 7.4
    • SubModel: DELUXE
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1987 CHEVROLET R20 SUBURBAN

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Use Factory Big Block Hardware And Mounts~Must Use 1975 And Later Model Clutch Linkage Located At Rear Of Engine~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Designed For Use With A Trans-Dapt Throttle Body Spacer~502 Big Block Chevy Will Have Clearance Problems On Some Applications~Mild Steel
    • Liter: 7.4
    • SubModel: CUSTOM DELUXE
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1980 CHEVROLET K10 PICKUP

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Use Factory Big Block Hardware And Mounts~Must Use 1975 And Later Model Clutch Linkage Located At Rear Of Engine~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Mild Steel
    • Liter: 7.4
    • Aspiration: N
    • SubModel: CHEYENNE
    • Engine Vin: S
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1985 CHEVROLET K20 SUBURBAN

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Use Factory Big Block Hardware And Mounts~Must Use 1975 And Later Model Clutch Linkage Located At Rear Of Engine~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Designed For Use With A Trans-Dapt Throttle Body Spacer~502 Big Block Chevy Will Have Clearance Problems On Some Applications~Mild Steel
    • Liter: 7.4
    • SubModel: CUSTOM
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1970-1972 CHEVROLET K20 SUBURBAN

    • CC: 6588
    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Use Factory Big Block Hardware And Mounts~Must Use 1975 And Later Model Clutch Linkage Located At Rear Of Engine~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Designed For Use With A Trans-Dapt Throttle Body Spacer~502 Big Block Chevy Will Have Clearance Problems On Some Applications~Mild Steel
    • Liter: 6.6
    • SubModel: BASE
    • CUI: 402
    • EngineType: V8 ( 6.6 L / 402 )

    1974-1978 GMC C35/C3500 PICKUP

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Use Factory Big Block Hardware And Mounts~Must Use 1975 And Later Model Clutch Linkage Located At Rear Of Engine~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Designed For Use With A Trans-Dapt Throttle Body Spacer~502 Big Block Chevy Will Have Clearance Problems On Some Applications~Mild Steel
    • Liter: 7.4
    • SubModel: BASE
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1968 CHEVROLET C20 SUBURBAN

    • CC: 6489
    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Use Factory Big Block Hardware And Mounts~Must Use 1975 And Later Model Clutch Linkage Located At Rear Of Engine~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Designed For Use With A Trans-Dapt Throttle Body Spacer~502 Big Block Chevy Will Have Clearance Problems On Some Applications~Mild Steel
    • Liter: 6.5
    • SubModel: BASE
    • CUI: 396
    • EngineType: V8 ( 6.5 L / 396 )

    1981 CHEVROLET C20 PICKUP

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Use Factory Big Block Hardware And Mounts~Must Use 1975 And Later Model Clutch Linkage Located At Rear Of Engine~Will Not Fit 727 Torqueflite Transmission~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Designed For Use With A Trans-Dapt Throttle Body Spacer~502 Big Block Chevy Will Have Clearance Problems On Some Applications~Mild Steel
    • Liter: 7.4
    • SubModel: DELUXE
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1979-1980 GMC C1500 SUBURBAN

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Use Factory Big Block Hardware And Mounts~Must Use 1975 And Later Model Clutch Linkage Located At Rear Of Engine~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Mild Steel
    • Liter: 7.4
    • SubModel: HIGH SIERRA
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1979-1982 GMC C2500 PICKUP

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Use Factory Big Block Hardware And Mounts~Must Use 1975 And Later Model Clutch Linkage Located At Rear Of Engine~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Designed For Use With A Trans-Dapt Throttle Body Spacer~502 Big Block Chevy Will Have Clearance Problems On Some Applications~Mild Steel
    • Liter: 7.4
    • SubModel: SIERRA GRANDE
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1979-1980 CHEVROLET C20 SUBURBAN

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Use Factory Big Block Hardware And Mounts~Must Use 1975 And Later Model Clutch Linkage Located At Rear Of Engine~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Designed For Use With A Trans-Dapt Throttle Body Spacer~502 Big Block Chevy Will Have Clearance Problems On Some Applications~Mild Steel
    • Liter: 7.4
    • SubModel: SILVERADO
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1980 CHEVROLET K10 PICKUP

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Use Factory Big Block Hardware And Mounts~Must Use 1975 And Later Model Clutch Linkage Located At Rear Of Engine~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Mild Steel
    • Liter: 7.4
    • Aspiration: N
    • SubModel: CUSTOM DELUXE
    • Engine Vin: S
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1976-1978 GMC K25 PICKUP

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Use Factory Big Block Hardware And Mounts~Must Use 1975 And Later Model Clutch Linkage Located At Rear Of Engine~Elite Replacement Gasket PN[27520]~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Designed For Use With A Trans-Dapt Throttle Body Spacer~502 Big Block Chevy Will Have Clearance Problems On Some Applications~Mild Steel
    • Liter: 7.4
    • SubModel: BASE
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1976-1978 CHEVROLET K5 BLAZER

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Use Factory Big Block Hardware And Mounts~Must Use 1975 And Later Model Clutch Linkage Located At Rear Of Engine~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Mild Steel
    • Liter: 7.4
    • SubModel: CHEYENNE
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1969 GMC C25/C2500 PICKUP

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Use Factory Big Block Hardware And Mounts~Must Use 1975 And Later Model Clutch Linkage Located At Rear Of Engine~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Designed For Use With A Trans-Dapt Throttle Body Spacer~502 Big Block Chevy Will Have Clearance Problems On Some Applications~Mild Steel
    • Liter: 6.5
    • SubModel: BASE
    • CUI: 396
    • EngineType: V8 ( 6.5 L / 396 )

    1975-1980 GMC C1500 PICKUP

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Use Factory Big Block Hardware And Mounts~Must Use 1975 And Later Model Clutch Linkage Located At Rear Of Engine~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Mild Steel
    • Liter: 7.4
    • SubModel: HIGH SIERRA
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1973 GMC JIMMY

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Use Factory Big Block Hardware And Mounts~Must Use 1975 And Later Model Clutch Linkage Located At Rear Of Engine~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Designed For Use With A Trans-Dapt Throttle Body Spacer~502 Big Block Chevy Will Have Clearance Problems On Some Applications~Mild Steel
    • Liter: 7.4
    • SubModel: BASE
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1979 CHEVROLET K10 PICKUP

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Use Factory Big Block Hardware And Mounts~Must Use 1975 And Later Model Clutch Linkage Located At Rear Of Engine~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Mild Steel
    • Liter: 7.4
    • SubModel: CHEYENNE
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1970-1971 CHEVROLET C20 SUBURBAN

    • CC: 6588
    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Use Factory Big Block Hardware And Mounts~Must Use 1975 And Later Model Clutch Linkage Located At Rear Of Engine~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Designed For Use With A Trans-Dapt Throttle Body Spacer~502 Big Block Chevy Will Have Clearance Problems On Some Applications~Mild Steel
    • Liter: 6.6
    • SubModel: BASE
    • CUI: 402
    • EngineType: V8 ( 6.6 L / 402 )

    1979-1986 GMC C2500 SUBURBAN

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Use Factory Big Block Hardware And Mounts~Must Use 1975 And Later Model Clutch Linkage Located At Rear Of Engine~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Designed For Use With A Trans-Dapt Throttle Body Spacer~502 Big Block Chevy Will Have Clearance Problems On Some Applications~Mild Steel
    • Liter: 7.4
    • SubModel: SIERRA CLASSIC
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1969 GMC C35/C3500 PICKUP

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Use Factory Big Block Hardware And Mounts~Must Use 1975 And Later Model Clutch Linkage Located At Rear Of Engine~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Designed For Use With A Trans-Dapt Throttle Body Spacer~502 Big Block Chevy Will Have Clearance Problems On Some Applications~Mild Steel
    • Liter: 6.5
    • SubModel: BASE
    • CUI: 396
    • EngineType: V8 ( 6.5 L / 396 )

    1973-1974 CHEVROLET C10 PICKUP

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Use Factory Big Block Hardware And Mounts~Must Use 1975 And Later Model Clutch Linkage Located At Rear Of Engine~Will Not Fit 727 Torqueflite Transmission~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Mild Steel
    • Liter: 7.4
    • SubModel: BASE
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )
    69820 - Hedman Hedders Elite Ultra-Duty Headers is rated 5.0 out of 5 by 2.
    • 2016-12-01T08:29CST
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    • loc_en_US, sid_10001_10001_36246, PRD, sort_relevancy
    • clientName_jegs
    Rated 5 out of 5 by from Functioned as advertised I installed a set of Hedman 69820 in my 1976 Chevrolet, C20 , ZZ502/502 engine with standard 1976 BB/SB Starter motor and 700R4 transmission. They fit perfect in the truck but as advertised the header flange did make contact with the top of some head bolts requiring a little grinding. so far I have only had to re-torque the header bolts once due to the improved gaskets that came with the headers. As advertised the coating on the headers did discolor at some of the bends due to the heat the NEW 502 can develop. Due to the packaging the headers came out of the box damaged , the machined edges on the flanges scratched and gouged the tubes near the collector. but JEGS gave me some money back for repairs.
    Date published: 2015-10-07
    Rated 5 out of 5 by from ordered for an ongoing project but first blush they are exceptional. They look great, came with all instillation hardware and bolts. I am looking forward to getting this together.
    Date published: 2016-01-18
    • 2016-12-01T08:29CST
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    • cp_1, bvpage1
    • co_hasreviews, tv_0, tr_2
    • loc_en_US, sid_10001_10001_36246, PRD, sort_relevancy
    • clientName_jegs
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