Hedman headers for 1967-87 GM 1/2, 3/4 Ton Truck 396-502 w/A.I.R. Hedman headers for 1967-87 GM 1/2, 3/4 Ton Truck 396-502 w/A.I.R. Hedman headers for 1967-87 GM 1/2, 3/4 Ton Truck 396-502 w/A.I.R. Photo of header reducers, gaskets and hardware included with Hedman Hedders Hedman headers for 1967-87 GM 1/2, 3/4 Ton Truck 396-502 w/A.I.R. This Product is MADE IN THE USA!
This Product is MADE IN THE USA!

LONG-TUBE E.O. HEADERS For '82-86 4WD GM TRUCK/BLAZER 396-502 With A.I.R.

Standard-Duty Uncoated, Long Tube, 50-State Headers For 1967-87 CHEVY/GMC 4WD (only) 3/4 Ton Pick-Up, K5 Blazer with 396-502 BB Chevy With A.I.R. (Centered Engine Chassis Only); 1-3/4 in. Tubes; 3 in. Ball/Socket Collector


Product Specifications

[PLEASE REVIEW THE FOLLOWING PRODUCT ATTRIBUTES & VEHICLE APPLICATION FOOTNOTES SPECIFIC TO YOUR VEHICLE, THOROUGHLY]

  • Tube Diameter 1-3/4 in.
  • Tube Style Long Tubes
  • Air Conditioning Yes
  • Automatic Transmission - Column Yes
  • Automatic Transmission - Floor Yes
  • Manual Transmission - Column No
  • Manual Transmission - Floor Yes
  • Collector Attachment 3 in.
  • Collector Diameter 3 in.
  • Collector Size 3 in.
  • Collector Style BALL and SOCKET Style (Gasketless)
  • Reducer Outlet Size 2-1/2 in.
  • Exhaust System Dia 2-1/2 in.
  • Contents headers, gaskets (when applicable), 3-bolt exhaust adapters, hardware
  • E.O. # Yes
  • Emissions Notes EO# D167-10 (click here for covered vehicles in document on ARB.CA.GOV website)
  • Emissions Notes EO# D167-33 (click here for covered vehicles in document on ARB.CA.GOV website)
  • Finish Uncoated
  • Finish Type UNCOATED Mild Steel! Shipped with Temporary Paint.
  • Flange Style Standard
  • Flange Thickness 0.3125 in.
  • Header Port Shape Round
  • Header Style Long Tube
  • Notes 67-87 GM 1/2, 3/4 Ton Truck 396-502 w/A.I.R.
  • Port Shape Round
  • Power Steering Yes
  • Material Mild Steel
  • Tube Design Standard
  • Tube Length Long Tubes
  • Tube Material Thickness 16g
  • Tube Size 1-3/4 in.
  • Variations 61286, 61288
  • with A.I.R. System Yes
  • with EGR No
  • Weld-Up No
  • Tuned No
  • Bolts/Studs Included Yes
  • Catalytic Converter(s) Included No
  • Collector Bolts Included Yes
  • Crossover Pipe Included No
  • Gasket Or Seal Included Yes
  • Header Fasteners Included Yes
  • Installation Hardware Included Yes
  • Motor Mounts Included No
  • Mounting Hardware Included Yes
  • Reducers Included Yes
  • Y-Pipe Included No
  • Quantity Sold as a pair.
  • Primary Tube Gauge 16g
  • Primary Tube Diameter (in) 1.75 in.
  • Package Contents Headers, ball and socket reducers (exhaust adapters), gaskets, mounting hardware
  • Header Material Mild Steel
  • Header Finish Uncoated
  • Cylinder Head Port Shape Round
  • Cylinder Head Stock Profile Heads
  • Header Construction MILD STEEL- Standard-Duty
  • Replacement Gasket 27530
  • Replacement Head Flange Gasket 27530
  • California Proposition 65 WARNING: Cancer. For more info visit www.P65Warnings.ca.gov

Vehicle Applications

      Year C.I.D. Liter Block Type Cylinders Fuel Type Drive Type
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnYes
      Auto Transmission - FloorYes
      Manual Transmission - ColumnYes
      Manual Transmission - FloorYes
      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.
      (213) Elite replacement gasket 27550.
      (225) Designed for use with a Trans-Dapt throttle body spacer.
      (4) Includes parts necessary to retain emission devices. (50 State)
      (45) Not legal for sale or use in California on pollution controlled motor vehicles.
      (5) With A.I.R. system.
      (6) Modification to stock exhaust required to retain catalytic converter.
      Drivetrain4WD
      E.O. NumberD167-10
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnYes
      Auto Transmission - FloorYes
      Manual Transmission - ColumnYes
      Manual Transmission - FloorYes
      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.
      (213) Elite replacement gasket 27550.
      (225) Designed for use with a Trans-Dapt throttle body spacer.
      (4) Includes parts necessary to retain emission devices. (50 State)
      (45) Not legal for sale or use in California on pollution controlled motor vehicles.
      (5) With A.I.R. system.
      (6) Modification to stock exhaust required to retain catalytic converter.
      Drivetrain4WD
      E.O. NumberD167-10
      Year C.I.D. Liter Block Type Cylinders Fuel Type Drive Type
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnYes
      Auto Transmission - FloorYes
      Manual Transmission - ColumnYes
      Manual Transmission - FloorYes
      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.
      (213) Elite replacement gasket 27550.
      (225) Designed for use with a Trans-Dapt throttle body spacer.
      (4) Includes parts necessary to retain emission devices. (50 State)
      (45) Not legal for sale or use in California on pollution controlled motor vehicles.
      (5) With A.I.R. system.
      (6) Modification to stock exhaust required to retain catalytic converter.
      Drivetrain4WD
      E.O. NumberD167-10
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnYes
      Auto Transmission - FloorYes
      Manual Transmission - ColumnYes
      Manual Transmission - FloorYes
      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.
      (213) Elite replacement gasket 27550.
      (225) Designed for use with a Trans-Dapt throttle body spacer.
      (4) Includes parts necessary to retain emission devices. (50 State)
      (45) Not legal for sale or use in California on pollution controlled motor vehicles.
      (5) With A.I.R. system.
      (6) Modification to stock exhaust required to retain catalytic converter.
      Drivetrain4WD
      E.O. NumberD167-10
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnYes
      Auto Transmission - FloorYes
      Manual Transmission - ColumnYes
      Manual Transmission - FloorYes
      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.
      (213) Elite replacement gasket 27550.
      (225) Designed for use with a Trans-Dapt throttle body spacer.
      (4) Includes parts necessary to retain emission devices. (50 State)
      (45) Not legal for sale or use in California on pollution controlled motor vehicles.
      (5) With A.I.R. system.
      (6) Modification to stock exhaust required to retain catalytic converter.
      Drivetrain4WD
      E.O. NumberD167-10
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnYes
      Auto Transmission - FloorYes
      Manual Transmission - ColumnYes
      Manual Transmission - FloorYes
      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.
      (213) Elite replacement gasket 27550.
      (225) Designed for use with a Trans-Dapt throttle body spacer.
      (4) Includes parts necessary to retain emission devices. (50 State)
      (45) Not legal for sale or use in California on pollution controlled motor vehicles.
      (5) With A.I.R. system.
      (6) Modification to stock exhaust required to retain catalytic converter.
      Drivetrain4WD
      E.O. NumberD167-10
      Year C.I.D. Liter Block Type Cylinders Fuel Type Drive Type
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnYes
      Auto Transmission - FloorYes
      Manual Transmission - ColumnYes
      Manual Transmission - FloorYes
      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.
      (213) Elite replacement gasket 27550.
      (225) Designed for use with a Trans-Dapt throttle body spacer.
      (4) Includes parts necessary to retain emission devices. (50 State)
      (45) Not legal for sale or use in California on pollution controlled motor vehicles.
      (5) With A.I.R. system.
      (6) Modification to stock exhaust required to retain catalytic converter.
      Drivetrain4WD
      E.O. NumberD167-10
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnYes
      Auto Transmission - FloorYes
      Manual Transmission - ColumnYes
      Manual Transmission - FloorYes
      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.
      (213) Elite replacement gasket 27550.
      (225) Designed for use with a Trans-Dapt throttle body spacer.
      (4) Includes parts necessary to retain emission devices. (50 State)
      (45) Not legal for sale or use in California on pollution controlled motor vehicles.
      (5) With A.I.R. system.
      (6) Modification to stock exhaust required to retain catalytic converter.
      Drivetrain4WD
      E.O. NumberD167-10
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