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Photo of long tube Hedman headers with EGR & A.I.R. for 1987-91 Chevy Corvettes Photo of header reducers, gaskets and hardware included with Hedman Hedders This Product is MADE IN THE USA! Photo of Hedman's Black-Maxx Satin Black Ceramic-metallic header finish.

H.D. Black Long-Tube Headers For 87-91 Corvette 283-400 w/A.I.R.

87-91 CORVETTE W/ A.I.R. & W/ EGR ELITE- BLACK MAXX

Part#68483
$837.16

Product Specifications

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

  • Tube Diameter 1-5/8 in.
  • Tube Style Long Tubes
  • Air Conditioning Yes
  • Automatic Transmission - Column No
  • Automatic Transmission - Floor Yes
  • Manual Transmission - Column No
  • Manual Transmission - Floor Yes
  • Power Steering 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 Header(s), new bolts, gasket(s) to head, reducer(s) and hardware, instructions
  • E.O. # No
  • Emissions Notes Not currently legal for sale or use in California. Please call for status update
  • Finish BLACK MAXX Satin Black Ceramic-Metallic
  • Finish Type BLACK MAXX- Black Ceramic-Metallic Coating
  • COATED HEADERS DURING ENGINE BREAK-IN PERIOD
    CLICK FOR IMPORTANT INFO REGARDING HEADER COATINGS DURING ENGINE BREAK-IN!
  • Flange Style Standard
  • Flange Thickness 0.375 in.
  • Header Port Shape Oval Port
  • Header Style Long Tube
  • Notes 87-91 Chevrolet Corvette 283-400
  • Key Feature Without A.I.R.
  • Port Shape Oval
  • Material Mild Steel
  • Tube Design Standard
  • Tube Length Long Tubes
  • Tube Material Thickness 14g
  • Tube Size 1-5/8 in.
  • Variations 66447, 68487
  • Installation Notes EGR Gasket Not Included! Must purchase AC Delco #219-590 or GM #19236589
  • 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 14g
  • Primary Tube Diameter (in) 1.625 in.
  • Package Contents Headers, ball and socket reducers (exhaust adapters), gaskets, mounting hardware
  • Header Material Mild Steel
  • Header Finish BLACK MAXX Satin Black Ceramic-Metallic
  • Cylinder Head Port Shape Oval
  • Cylinder Head Stock Profile Heads
  • O2 Provision Yes
  • Header Construction MILD STEEL- ELITE Heavy-Duty
  • Replacement Gasket 27520
  • Replacement Head Flange Gasket 27520
  • California Proposition 65 WARNING: Cancer & Reproductive Harm. 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 - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorYes
      Engine FamilySB Chevy 283-400 (Gen 1)
      Footnotes(103) Will fit with angle plug heads (Chevy aluminum only, L98).
      (121) Must modify rotary A/C bracket.
      (204) With E.G.R.
      (5) With A.I.R. system.
      (6) Modification to stock exhaust required to retain catalytic converter.
      Emissions NotesNOT LEGAL FOR STREET USE! Not currently applicable or intended for street or highway use. Call for up-to-date status.
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorYes
      Engine FamilySB Chevy 283-400 (Gen 1)
      Footnotes(103) Will fit with angle plug heads (Chevy aluminum only, L98).
      (121) Must modify rotary A/C bracket.
      (204) With E.G.R.
      (5) With A.I.R. system.
      (6) Modification to stock exhaust required to retain catalytic converter.
      Emissions NotesNOT LEGAL FOR STREET USE! Not currently applicable or intended for street or highway use. Call for up-to-date status.
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorYes
      Engine FamilySB Chevy 283-400 (Gen 1)
      Footnotes(103) Will fit with angle plug heads (Chevy aluminum only, L98).
      (121) Must modify rotary A/C bracket.
      (204) With E.G.R.
      (5) With A.I.R. system.
      (6) Modification to stock exhaust required to retain catalytic converter.
      Emissions NotesNOT LEGAL FOR STREET USE! Not currently applicable or intended for street or highway use. Call for up-to-date status.
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorYes
      Engine FamilySB Chevy 283-400 (Gen 1)
      Footnotes(103) Will fit with angle plug heads (Chevy aluminum only, L98).
      (121) Must modify rotary A/C bracket.
      (204) With E.G.R.
      (5) With A.I.R. system.
      (6) Modification to stock exhaust required to retain catalytic converter.
      Emissions NotesNOT LEGAL FOR STREET USE! Not currently applicable or intended for street or highway use. Call for up-to-date status.
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorYes
      Engine FamilySB Chevy 283-400 (Gen 1)
      Footnotes(103) Will fit with angle plug heads (Chevy aluminum only, L98).
      (121) Must modify rotary A/C bracket.
      (204) With E.G.R.
      (5) With A.I.R. system.
      (6) Modification to stock exhaust required to retain catalytic converter.
      Emissions NotesNOT LEGAL FOR STREET USE! Not currently applicable or intended for street or highway use. Call for up-to-date status.
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorYes
      Engine FamilySB Chevy 283-400 (Gen 1)
      Footnotes(103) Will fit with angle plug heads (Chevy aluminum only, L98).
      (121) Must modify rotary A/C bracket.
      (204) With E.G.R.
      (5) With A.I.R. system.
      (6) Modification to stock exhaust required to retain catalytic converter.
      Emissions NotesNOT LEGAL FOR STREET USE! Not currently applicable or intended for street or highway use. Call for up-to-date status.
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorYes
      Engine FamilySB Chevy 283-400 (Gen 1)
      Footnotes(103) Will fit with angle plug heads (Chevy aluminum only, L98).
      (121) Must modify rotary A/C bracket.
      (204) With E.G.R.
      (5) With A.I.R. system.
      (6) Modification to stock exhaust required to retain catalytic converter.
      Emissions NotesNOT LEGAL FOR STREET USE! Not currently applicable or intended for street or highway use. Call for up-to-date status.
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorYes
      Engine FamilySB Chevy 283-400 (Gen 1)
      Footnotes(103) Will fit with angle plug heads (Chevy aluminum only, L98).
      (121) Must modify rotary A/C bracket.
      (204) With E.G.R.
      (5) With A.I.R. system.
      (6) Modification to stock exhaust required to retain catalytic converter.
      Emissions NotesNOT LEGAL FOR STREET USE! Not currently applicable or intended for street or highway use. Call for up-to-date status.
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorYes
      Engine FamilySB Chevy 283-400 (Gen 1)
      Footnotes(103) Will fit with angle plug heads (Chevy aluminum only, L98).
      (121) Must modify rotary A/C bracket.
      (204) With E.G.R.
      (5) With A.I.R. system.
      (6) Modification to stock exhaust required to retain catalytic converter.
      Emissions NotesNOT LEGAL FOR STREET USE! Not currently applicable or intended for street or highway use. Call for up-to-date status.
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorYes
      Engine FamilySB Chevy 283-400 (Gen 1)
      Footnotes(103) Will fit with angle plug heads (Chevy aluminum only, L98).
      (121) Must modify rotary A/C bracket.
      (204) With E.G.R.
      (5) With A.I.R. system.
      (6) Modification to stock exhaust required to retain catalytic converter.
      Emissions NotesNOT LEGAL FOR STREET USE! Not currently applicable or intended for street or highway use. Call for up-to-date status.
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorYes
      Engine FamilySB Chevy 283-400 (Gen 1)
      Footnotes(103) Will fit with angle plug heads (Chevy aluminum only, L98).
      (121) Must modify rotary A/C bracket.
      (204) With E.G.R.
      (5) With A.I.R. system.
      (6) Modification to stock exhaust required to retain catalytic converter.
      Emissions NotesNOT LEGAL FOR STREET USE! Not currently applicable or intended for street or highway use. Call for up-to-date status.
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorYes
      Engine FamilySB Chevy 283-400 (Gen 1)
      Footnotes(103) Will fit with angle plug heads (Chevy aluminum only, L98).
      (121) Must modify rotary A/C bracket.
      (204) With E.G.R.
      (5) With A.I.R. system.
      (6) Modification to stock exhaust required to retain catalytic converter.
      Emissions NotesNOT LEGAL FOR STREET USE! Not currently applicable or intended for street or highway use. Call for up-to-date status.
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorYes
      Engine FamilySB Chevy 283-400 (Gen 1)
      Footnotes(103) Will fit with angle plug heads (Chevy aluminum only, L98).
      (121) Must modify rotary A/C bracket.
      (204) With E.G.R.
      (5) With A.I.R. system.
      (6) Modification to stock exhaust required to retain catalytic converter.
      Emissions NotesNOT LEGAL FOR STREET USE! Not currently applicable or intended for street or highway use. Call for up-to-date status.
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorYes
      Engine FamilySB Chevy 283-400 (Gen 1)
      Footnotes(103) Will fit with angle plug heads (Chevy aluminum only, L98).
      (121) Must modify rotary A/C bracket.
      (204) With E.G.R.
      (5) With A.I.R. system.
      (6) Modification to stock exhaust required to retain catalytic converter.
      Emissions NotesNOT LEGAL FOR STREET USE! Not currently applicable or intended for street or highway use. Call for up-to-date status.
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorYes
      Engine FamilySB Chevy 283-400 (Gen 1)
      Footnotes(103) Will fit with angle plug heads (Chevy aluminum only, L98).
      (121) Must modify rotary A/C bracket.
      (204) With E.G.R.
      (5) With A.I.R. system.
      (6) Modification to stock exhaust required to retain catalytic converter.
      Emissions NotesNOT LEGAL FOR STREET USE! Not currently applicable or intended for street or highway use. Call for up-to-date status.
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorYes
      Engine FamilySB Chevy 283-400 (Gen 1)
      Footnotes(103) Will fit with angle plug heads (Chevy aluminum only, L98).
      (121) Must modify rotary A/C bracket.
      (204) With E.G.R.
      (5) With A.I.R. system.
      (6) Modification to stock exhaust required to retain catalytic converter.
      Emissions NotesNOT LEGAL FOR STREET USE! Not currently applicable or intended for street or highway use. Call for up-to-date status.
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorYes
      Engine FamilySB Chevy 283-400 (Gen 1)
      Footnotes(103) Will fit with angle plug heads (Chevy aluminum only, L98).
      (121) Must modify rotary A/C bracket.
      (204) With E.G.R.
      (5) With A.I.R. system.
      (6) Modification to stock exhaust required to retain catalytic converter.
      Emissions NotesNOT LEGAL FOR STREET USE! Not currently applicable or intended for street or highway use. Call for up-to-date status.
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorYes
      Engine FamilySB Chevy 283-400 (Gen 1)
      Footnotes(103) Will fit with angle plug heads (Chevy aluminum only, L98).
      (121) Must modify rotary A/C bracket.
      (204) With E.G.R.
      (5) With A.I.R. system.
      (6) Modification to stock exhaust required to retain catalytic converter.
      Emissions NotesNOT LEGAL FOR STREET USE! Not currently applicable or intended for street or highway use. Call for up-to-date status.
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorYes
      Engine FamilySB Chevy 283-400 (Gen 1)
      Footnotes(103) Will fit with angle plug heads (Chevy aluminum only, L98).
      (121) Must modify rotary A/C bracket.
      (204) With E.G.R.
      (5) With A.I.R. system.
      (6) Modification to stock exhaust required to retain catalytic converter.
      Emissions NotesNOT LEGAL FOR STREET USE! Not currently applicable or intended for street or highway use. Call for up-to-date status.
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorYes
      Engine FamilySB Chevy 283-400 (Gen 1)
      Footnotes(103) Will fit with angle plug heads (Chevy aluminum only, L98).
      (121) Must modify rotary A/C bracket.
      (204) With E.G.R.
      (5) With A.I.R. system.
      (6) Modification to stock exhaust required to retain catalytic converter.
      Emissions NotesNOT LEGAL FOR STREET USE! Not currently applicable or intended for street or highway use. Call for up-to-date status.
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorYes
      Engine FamilySB Chevy 283-400 (Gen 1)
      Footnotes(103) Will fit with angle plug heads (Chevy aluminum only, L98).
      (121) Must modify rotary A/C bracket.
      (204) With E.G.R.
      (5) With A.I.R. system.
      (6) Modification to stock exhaust required to retain catalytic converter.
      Emissions NotesNOT LEGAL FOR STREET USE! Not currently applicable or intended for street or highway use. Call for up-to-date status.
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorYes
      Engine FamilySB Chevy 283-400 (Gen 1)
      Footnotes(103) Will fit with angle plug heads (Chevy aluminum only, L98).
      (121) Must modify rotary A/C bracket.
      (204) With E.G.R.
      (5) With A.I.R. system.
      (6) Modification to stock exhaust required to retain catalytic converter.
      Emissions NotesNOT LEGAL FOR STREET USE! Not currently applicable or intended for street or highway use. Call for up-to-date status.
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorYes
      Engine FamilySB Chevy 283-400 (Gen 1)
      Footnotes(103) Will fit with angle plug heads (Chevy aluminum only, L98).
      (121) Must modify rotary A/C bracket.
      (204) With E.G.R.
      (5) With A.I.R. system.
      (6) Modification to stock exhaust required to retain catalytic converter.
      Emissions NotesNOT LEGAL FOR STREET USE! Not currently applicable or intended for street or highway use. Call for up-to-date status.
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorYes
      Engine FamilySB Chevy 283-400 (Gen 1)
      Footnotes(103) Will fit with angle plug heads (Chevy aluminum only, L98).
      (121) Must modify rotary A/C bracket.
      (204) With E.G.R.
      (5) With A.I.R. system.
      (6) Modification to stock exhaust required to retain catalytic converter.
      Emissions NotesNOT LEGAL FOR STREET USE! Not currently applicable or intended for street or highway use. Call for up-to-date status.
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorYes
      Engine FamilySB Chevy 283-400 (Gen 1)
      Footnotes(103) Will fit with angle plug heads (Chevy aluminum only, L98).
      (121) Must modify rotary A/C bracket.
      (204) With E.G.R.
      (5) With A.I.R. system.
      (6) Modification to stock exhaust required to retain catalytic converter.
      Emissions NotesNOT LEGAL FOR STREET USE! Not currently applicable or intended for street or highway use. Call for up-to-date status.
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorYes
      Engine FamilySB Chevy 283-400 (Gen 1)
      Footnotes(103) Will fit with angle plug heads (Chevy aluminum only, L98).
      (121) Must modify rotary A/C bracket.
      (204) With E.G.R.
      (5) With A.I.R. system.
      (6) Modification to stock exhaust required to retain catalytic converter.
      Emissions NotesNOT LEGAL FOR STREET USE! Not currently applicable or intended for street or highway use. Call for up-to-date status.
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorYes
      Engine FamilySB Chevy 283-400 (Gen 1)
      Footnotes(103) Will fit with angle plug heads (Chevy aluminum only, L98).
      (121) Must modify rotary A/C bracket.
      (204) With E.G.R.
      (5) With A.I.R. system.
      (6) Modification to stock exhaust required to retain catalytic converter.
      Emissions NotesNOT LEGAL FOR STREET USE! Not currently applicable or intended for street or highway use. Call for up-to-date status.
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorYes
      Engine FamilySB Chevy 283-400 (Gen 1)
      Footnotes(103) Will fit with angle plug heads (Chevy aluminum only, L98).
      (121) Must modify rotary A/C bracket.
      (204) With E.G.R.
      (5) With A.I.R. system.
      (6) Modification to stock exhaust required to retain catalytic converter.
      Emissions NotesNOT LEGAL FOR STREET USE! Not currently applicable or intended for street or highway use. Call for up-to-date status.
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorYes
      Engine FamilySB Chevy 283-400 (Gen 1)
      Footnotes(103) Will fit with angle plug heads (Chevy aluminum only, L98).
      (121) Must modify rotary A/C bracket.
      (204) With E.G.R.
      (5) With A.I.R. system.
      (6) Modification to stock exhaust required to retain catalytic converter.
      Emissions NotesNOT LEGAL FOR STREET USE! Not currently applicable or intended for street or highway use. Call for up-to-date status.
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorYes
      Engine FamilySB Chevy 283-400 (Gen 1)
      Footnotes(103) Will fit with angle plug heads (Chevy aluminum only, L98).
      (121) Must modify rotary A/C bracket.
      (204) With E.G.R.
      (5) With A.I.R. system.
      (6) Modification to stock exhaust required to retain catalytic converter.
      Emissions NotesNOT LEGAL FOR STREET USE! Not currently applicable or intended for street or highway use. Call for up-to-date status.
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