Photo of long tube Hedman headers with EGR & A.I.R. for 1987-91 Chevy Corvettes What happens when you use standard headers on aftermarket cylinder heads?

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

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

Product Specifications

(PLEASE REVIEW THE FOLLOWING PRODUCT SPECIFICATIONS & FOOTNOTES THOROUGHLY)

  • Tube Diameter 1-5/8"
  • Tube Style Long Tube
  • Collector Style Ball and Socket Style (Gasketless)
  • Air Conditioning Yes
  • Automatic Transmission - Column No
  • Automatic Transmission - Floor Yes
  • Manual Transmission - Column No
  • Manual Transmission - Floor Yes
  • Collector Attachment 3"
  • Collector Size 3"
  • Contents Header(s), new bolts and gasket(s) to head, reducer(s) and hardware, instructions
  • E.O. # Yes
  • Emissions Notes EO# D167-33 (click here for covered vehicles in document on ARB.CA.GOV website)
  • Exhaust System Dia 2-1/2"
  • Finish BLACK MAXX Satin Black Ceramic-Metallic
  • Flange Style Standard
  • Flange Thickness 0.375"
  • Header Port Shape Oval Port
  • Header Style Long Tube
  • Installation Notes EGR Gasket Not Included! Must purchase AC Delco #219-590 or GM #19236589
  • Key Feature Without A.I.R.
  • Notes 87-91 Chevrolet Corvette 283-400
  • Port Shape Oval
  • Power Steering Yes
  • Material Mild Steel
  • Tube Design LONG TUBES
  • Tube Length Long Tubes
  • Tube Material Thickness 14g
  • Tube Size 1-5/8"
  • Variations 66447, 68487
  • with A.I.R. System Yes
  • with EGR No
  • Weld-Up No
  • Reducer Outlet Size 2-1/2"
  • Tuned No
  • Bolts/Studs Included Yes
  • Catalytic Converter(s) Included No
  • Collector Bolts Included Yes
  • Crossover Pipe Included No
  • Gasket Or Seal Included Yes
  • Installation Hardware Included Yes
  • Motor Mounts (Included) No
  • Mounting Hardware Included Yes
  • Reducers Included Yes
  • Transmission Mount/Crossmember (Included) No
  • Y-Pipe Included No
  • Quantity Sold as a pair.
  • Primary Tube Gauge 14g
  • Primary Tube Diameter (in) 1.625"
  • Package Contents Header(s), new bolts and gasket(s) to head, reducer(s) and hardware, instructions
  • 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 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

      YearC.I.D.LiterCylindersDrive Type
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorYes
      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.
      Engine FamilySB Chevy 283-400 (Gen 1)
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorYes
      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.
      Engine FamilySB Chevy 283-400 (Gen 1)
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorYes
      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.
      Engine FamilySB Chevy 283-400 (Gen 1)
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorYes
      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.
      Engine FamilySB Chevy 283-400 (Gen 1)
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorYes
      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.
      Engine FamilySB Chevy 283-400 (Gen 1)
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorYes
      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.
      Engine FamilySB Chevy 283-400 (Gen 1)
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorYes
      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.
      Engine FamilySB Chevy 283-400 (Gen 1)
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorYes
      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.
      Engine FamilySB Chevy 283-400 (Gen 1)
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorYes
      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.
      Engine FamilySB Chevy 283-400 (Gen 1)
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorYes
      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.
      Engine FamilySB Chevy 283-400 (Gen 1)
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorYes
      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.
      Engine FamilySB Chevy 283-400 (Gen 1)
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorYes
      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.
      Engine FamilySB Chevy 283-400 (Gen 1)
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorYes
      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.
      Engine FamilySB Chevy 283-400 (Gen 1)
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorYes
      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.
      Engine FamilySB Chevy 283-400 (Gen 1)
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorYes
      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.
      Engine FamilySB Chevy 283-400 (Gen 1)
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorYes
      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.
      Engine FamilySB Chevy 283-400 (Gen 1)
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorYes
      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.
      Engine FamilySB Chevy 283-400 (Gen 1)
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorYes
      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.
      Engine FamilySB Chevy 283-400 (Gen 1)
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorYes
      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.
      Engine FamilySB Chevy 283-400 (Gen 1)
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorYes
      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.
      Engine FamilySB Chevy 283-400 (Gen 1)
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorYes
      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.
      Engine FamilySB Chevy 283-400 (Gen 1)
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorYes
      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.
      Engine FamilySB Chevy 283-400 (Gen 1)
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorYes
      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.
      Engine FamilySB Chevy 283-400 (Gen 1)
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorYes
      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.
      Engine FamilySB Chevy 283-400 (Gen 1)
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorYes
      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.
      Engine FamilySB Chevy 283-400 (Gen 1)
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorYes
      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.
      Engine FamilySB Chevy 283-400 (Gen 1)
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorYes
      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.
      Engine FamilySB Chevy 283-400 (Gen 1)
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorYes
      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.
      Engine FamilySB Chevy 283-400 (Gen 1)
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorYes
      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.
      Engine FamilySB Chevy 283-400 (Gen 1)
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnNo
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorYes
      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.
      Engine FamilySB Chevy 283-400 (Gen 1)
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