Photo of Hedman headers for 1984-86 Chevrolet Corvette 283-400 Photo of Hedman Hedders for 1984-86 Corvette 283-400 What happens when you use standard headers on aftermarket cylinder heads? 61448- 84-86 Corvette 283-400
61448- 84-86 Corvette 283-400

ELITE Hedders; 1-5/8" Tube Dia; 3" Coll; FULL LENGTH Design

ELITE Hedders; 1-5/8" Tube Dia.; 3" Coll.; FULL LENGTH Design

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 One pair of headers, head flange gaskets, collector flange gaskets (when applicable), 3-bolt exhaust adapters, mounting hardware
  • 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 Matte Silver Ceramic-Metallic
  • Flange Style Standard
  • Flange Thickness 0.375"
  • Header Style Long Tube
  • Key Feature 50 State (Non-EGR)
  • Notes 84-86 Corvette 283-400
  • Power Steering Yes
  • Material Mild Steel
  • Tube Design LONG TUBES
  • Tube Length Long Tubes
  • Tube Material Thickness 14g
  • Tube Size 1-5/8"
  • Variations 66441, 61448
  • 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
  • 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 One pair of headers, head flange gaskets, collector flange gaskets (when applicable), 3-bolt exhaust adapters, mounting hardware
  • Header Material Mild Steel
  • Header Finish HTC Polished Silver Ceramic-Metallic
  • Cylinder Head Port Shape Oval
  • Cylinder Head Fits Factory GM Aluminum or Cast Iron, Angle Plug and Straight Plug Heads.
  • 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.
      (203) Non-E.G.R. equipped
      (4) Includes parts necessary to retain emission devices. (50 State)
      (5) With A.I.R. system.
      (6) Modification to stock exhaust required to retain catalytic converter.
      E.O. NumberD167-33
      Emissions Notes50 State Legal (street legal) Headers per vehicle listing on C.A.R.B. EO D167-33
      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.
      (203) Non-E.G.R. equipped
      (4) Includes parts necessary to retain emission devices. (50 State)
      (5) With A.I.R. system.
      (6) Modification to stock exhaust required to retain catalytic converter.
      E.O. NumberD167-33
      Emissions Notes50 State Legal (street legal) Headers per vehicle listing on C.A.R.B. EO D167-33
      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.
      (203) Non-E.G.R. equipped
      (4) Includes parts necessary to retain emission devices. (50 State)
      (5) With A.I.R. system.
      (6) Modification to stock exhaust required to retain catalytic converter.
      E.O. NumberD167-33
      Emissions Notes50 State Legal (street legal) Headers per vehicle listing on C.A.R.B. EO D167-33
      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.
      (203) Non-E.G.R. equipped
      (4) Includes parts necessary to retain emission devices. (50 State)
      (5) With A.I.R. system.
      (6) Modification to stock exhaust required to retain catalytic converter.
      E.O. NumberD167-33
      Emissions Notes50 State Legal (street legal) Headers per vehicle listing on C.A.R.B. EO D167-33
      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.
      (203) Non-E.G.R. equipped
      (4) Includes parts necessary to retain emission devices. (50 State)
      (5) With A.I.R. system.
      (6) Modification to stock exhaust required to retain catalytic converter.
      E.O. NumberD167-33
      Emissions Notes50 State Legal (street legal) Headers per vehicle listing on C.A.R.B. EO D167-33
      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.
      (203) Non-E.G.R. equipped
      (4) Includes parts necessary to retain emission devices. (50 State)
      (5) With A.I.R. system.
      (6) Modification to stock exhaust required to retain catalytic converter.
      E.O. NumberD167-33
      Emissions Notes50 State Legal (street legal) Headers per vehicle listing on C.A.R.B. EO D167-33
      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.
      (203) Non-E.G.R. equipped
      (4) Includes parts necessary to retain emission devices. (50 State)
      (5) With A.I.R. system.
      (6) Modification to stock exhaust required to retain catalytic converter.
      E.O. NumberD167-33
      Emissions Notes50 State Legal (street legal) Headers per vehicle listing on C.A.R.B. EO D167-33
      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.
      (203) Non-E.G.R. equipped
      (4) Includes parts necessary to retain emission devices. (50 State)
      (5) With A.I.R. system.
      (6) Modification to stock exhaust required to retain catalytic converter.
      E.O. NumberD167-33
      Emissions Notes50 State Legal (street legal) Headers per vehicle listing on C.A.R.B. EO D167-33
      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.
      (203) Non-E.G.R. equipped
      (4) Includes parts necessary to retain emission devices. (50 State)
      (5) With A.I.R. system.
      (6) Modification to stock exhaust required to retain catalytic converter.
      E.O. NumberD167-33
      Emissions Notes50 State Legal (street legal) Headers per vehicle listing on C.A.R.B. EO D167-33
      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.
      (203) Non-E.G.R. equipped
      (4) Includes parts necessary to retain emission devices. (50 State)
      (5) With A.I.R. system.
      (6) Modification to stock exhaust required to retain catalytic converter.
      E.O. NumberD167-33
      Emissions Notes50 State Legal (street legal) Headers per vehicle listing on C.A.R.B. EO D167-33
      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.
      (203) Non-E.G.R. equipped
      (4) Includes parts necessary to retain emission devices. (50 State)
      (5) With A.I.R. system.
      (6) Modification to stock exhaust required to retain catalytic converter.
      E.O. NumberD167-33
      Emissions Notes50 State Legal (street legal) Headers per vehicle listing on C.A.R.B. EO D167-33
      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.
      (203) Non-E.G.R. equipped
      (4) Includes parts necessary to retain emission devices. (50 State)
      (5) With A.I.R. system.
      (6) Modification to stock exhaust required to retain catalytic converter.
      E.O. NumberD167-33
      Emissions Notes50 State Legal (street legal) Headers per vehicle listing on C.A.R.B. EO D167-33
      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.
      (203) Non-E.G.R. equipped
      (4) Includes parts necessary to retain emission devices. (50 State)
      (5) With A.I.R. system.
      (6) Modification to stock exhaust required to retain catalytic converter.
      E.O. NumberD167-33
      Emissions Notes50 State Legal (street legal) Headers per vehicle listing on C.A.R.B. EO D167-33
      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.
      (203) Non-E.G.R. equipped
      (4) Includes parts necessary to retain emission devices. (50 State)
      (5) With A.I.R. system.
      (6) Modification to stock exhaust required to retain catalytic converter.
      E.O. NumberD167-33
      Emissions Notes50 State Legal (street legal) Headers per vehicle listing on C.A.R.B. EO D167-33
      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.
      (203) Non-E.G.R. equipped
      (4) Includes parts necessary to retain emission devices. (50 State)
      (5) With A.I.R. system.
      (6) Modification to stock exhaust required to retain catalytic converter.
      E.O. NumberD167-33
      Emissions Notes50 State Legal (street legal) Headers per vehicle listing on C.A.R.B. EO D167-33
      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.
      (203) Non-E.G.R. equipped
      (4) Includes parts necessary to retain emission devices. (50 State)
      (5) With A.I.R. system.
      (6) Modification to stock exhaust required to retain catalytic converter.
      E.O. NumberD167-33
      Emissions Notes50 State Legal (street legal) Headers per vehicle listing on C.A.R.B. EO D167-33
      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.
      (203) Non-E.G.R. equipped
      (4) Includes parts necessary to retain emission devices. (50 State)
      (5) With A.I.R. system.
      (6) Modification to stock exhaust required to retain catalytic converter.
      E.O. NumberD167-33
      Emissions Notes50 State Legal (street legal) Headers per vehicle listing on C.A.R.B. EO D167-33
      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.
      (203) Non-E.G.R. equipped
      (4) Includes parts necessary to retain emission devices. (50 State)
      (5) With A.I.R. system.
      (6) Modification to stock exhaust required to retain catalytic converter.
      E.O. NumberD167-33
      Emissions Notes50 State Legal (street legal) Headers per vehicle listing on C.A.R.B. EO D167-33
      Engine FamilySB Chevy 283-400 (Gen 1)
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