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Photo of header reducers, gaskets and hardware included with Hedman Hedders This Product is MADE IN THE USA! Photo of Hedman's HTC Polished SIlver Ceramic Finish

SILVER LONG-TUBE E.O. HEADERS For 67-91 GM 396-454 TRUCKS Without A.I.R.

Standard-Duty Silver Coated, 50-State, Long-Tube Headers For 1968-95 CHEVY/GMC Class A Motorhomes; 396-454 BB Chevy Without A.I.R. (Centered Engine Chassis Only); 1-3/4 in. Tubes; 3 in. Ball/Socket Collector

Part#66127
$949.43
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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 No
  • 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. # Yes
  • Emissions Notes EO# D167-33 (click here for covered vehicles in document on ARB.CA.GOV website)
  • Finish HTC Polished Silver Ceramic-Metallic
  • Finish Type HTC SILVER (polished) Ceramic-metallic Coating
  • Flange Style Standard
  • Flange Thickness 0.375 in.
  • Header Port Shape Square
  • Header Style Long Tube
  • Notes 68-95 GM Class A Motorhome 283-400
  • Port Shape Square
  • Power Steering Yes
  • Material Mild Steel
  • Tube Design Standard
  • Tube Length Long Tubes
  • Tube Material Thickness 16g
  • Tube Size 1-3/4 in.
  • Variations 69127, 69827
  • with A.I.R. System No
  • 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 HTC Polished Silver Ceramic-Metallic
  • Cylinder Head Port Shape Square
  • Cylinder Head Stock Profile Heads
  • Header Construction MILD STEEL- Standard-Duty
  • Replacement Gasket 27550
  • Replacement Head Flange Gasket 27550
  • 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 - ColumnYes
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorNo
      Footnotes(1) Without smog injection or injection heads.
      (38) 16 gauge tubing.
      (4) Includes parts necessary to retain emission devices. (50 State)
      (42) Square port headers.
      (6) Modification to stock exhaust required to retain catalytic converter.
      E.O. NumberD167-27
      NotesCHEVROLET Class "A" Motorhomes with a 396-454 BB Chevy
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnYes
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorNo
      Footnotes(1) Without smog injection or injection heads.
      (38) 16 gauge tubing.
      (4) Includes parts necessary to retain emission devices. (50 State)
      (42) Square port headers.
      (6) Modification to stock exhaust required to retain catalytic converter.
      E.O. NumberD167-27
      NotesCHEVROLET Class "A" Motorhomes with a 396-454 BB Chevy
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnYes
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorNo
      Footnotes(1) Without smog injection or injection heads.
      (38) 16 gauge tubing.
      (4) Includes parts necessary to retain emission devices. (50 State)
      (42) Square port headers.
      (6) Modification to stock exhaust required to retain catalytic converter.
      E.O. NumberD167-27
      NotesCHEVROLET Class "A" Motorhomes with a 396-454 BB Chevy
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnYes
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorNo
      Footnotes(1) Without smog injection or injection heads.
      (38) 16 gauge tubing.
      (4) Includes parts necessary to retain emission devices. (50 State)
      (42) Square port headers.
      (6) Modification to stock exhaust required to retain catalytic converter.
      E.O. NumberD167-27
      NotesCHEVROLET Class "A" Motorhomes with a 396-454 BB Chevy
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnYes
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorNo
      Footnotes(1) Without smog injection or injection heads.
      (38) 16 gauge tubing.
      (4) Includes parts necessary to retain emission devices. (50 State)
      (42) Square port headers.
      (6) Modification to stock exhaust required to retain catalytic converter.
      E.O. NumberD167-27
      NotesCHEVROLET Class "A" Motorhomes with a 396-454 BB Chevy
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnYes
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorNo
      Footnotes(1) Without smog injection or injection heads.
      (38) 16 gauge tubing.
      (4) Includes parts necessary to retain emission devices. (50 State)
      (42) Square port headers.
      (6) Modification to stock exhaust required to retain catalytic converter.
      E.O. NumberD167-27
      NotesCHEVROLET Class "A" Motorhomes with a 396-454 BB Chevy
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnYes
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorNo
      Footnotes(1) Without smog injection or injection heads.
      (38) 16 gauge tubing.
      (4) Includes parts necessary to retain emission devices. (50 State)
      (42) Square port headers.
      (6) Modification to stock exhaust required to retain catalytic converter.
      E.O. NumberD167-27
      NotesCHEVROLET Class "A" Motorhomes with a 396-454 BB Chevy
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnYes
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorNo
      Footnotes(1) Without smog injection or injection heads.
      (38) 16 gauge tubing.
      (4) Includes parts necessary to retain emission devices. (50 State)
      (42) Square port headers.
      (6) Modification to stock exhaust required to retain catalytic converter.
      E.O. NumberD167-27
      NotesCHEVROLET Class "A" Motorhomes with a 396-454 BB Chevy
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnYes
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorNo
      Footnotes(1) Without smog injection or injection heads.
      (38) 16 gauge tubing.
      (4) Includes parts necessary to retain emission devices. (50 State)
      (42) Square port headers.
      (6) Modification to stock exhaust required to retain catalytic converter.
      E.O. NumberD167-27
      NotesCHEVROLET Class "A" Motorhomes with a 396-454 BB Chevy
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnYes
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorNo
      Footnotes(1) Without smog injection or injection heads.
      (38) 16 gauge tubing.
      (4) Includes parts necessary to retain emission devices. (50 State)
      (42) Square port headers.
      (6) Modification to stock exhaust required to retain catalytic converter.
      E.O. NumberD167-27
      NotesCHEVROLET Class "A" Motorhomes with a 396-454 BB Chevy
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnYes
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorNo
      Footnotes(1) Without smog injection or injection heads.
      (38) 16 gauge tubing.
      (4) Includes parts necessary to retain emission devices. (50 State)
      (42) Square port headers.
      (6) Modification to stock exhaust required to retain catalytic converter.
      E.O. NumberD167-27
      NotesCHEVROLET Class "A" Motorhomes with a 396-454 BB Chevy
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnYes
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorNo
      Footnotes(1) Without smog injection or injection heads.
      (38) 16 gauge tubing.
      (4) Includes parts necessary to retain emission devices. (50 State)
      (42) Square port headers.
      (6) Modification to stock exhaust required to retain catalytic converter.
      E.O. NumberD167-27
      NotesCHEVROLET Class "A" Motorhomes with a 396-454 BB Chevy
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnYes
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorNo
      Footnotes(1) Without smog injection or injection heads.
      (38) 16 gauge tubing.
      (4) Includes parts necessary to retain emission devices. (50 State)
      (42) Square port headers.
      (6) Modification to stock exhaust required to retain catalytic converter.
      E.O. NumberD167-27
      NotesCHEVROLET Class "A" Motorhomes with a 396-454 BB Chevy
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnYes
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorNo
      Footnotes(1) Without smog injection or injection heads.
      (38) 16 gauge tubing.
      (4) Includes parts necessary to retain emission devices. (50 State)
      (42) Square port headers.
      (6) Modification to stock exhaust required to retain catalytic converter.
      E.O. NumberD167-27
      NotesCHEVROLET Class "A" Motorhomes with a 396-454 BB Chevy
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnYes
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorNo
      Footnotes(1) Without smog injection or injection heads.
      (38) 16 gauge tubing.
      (4) Includes parts necessary to retain emission devices. (50 State)
      (42) Square port headers.
      (6) Modification to stock exhaust required to retain catalytic converter.
      E.O. NumberD167-27
      NotesCHEVROLET Class "A" Motorhomes with a 396-454 BB Chevy
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnYes
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorNo
      Footnotes(1) Without smog injection or injection heads.
      (38) 16 gauge tubing.
      (4) Includes parts necessary to retain emission devices. (50 State)
      (42) Square port headers.
      (6) Modification to stock exhaust required to retain catalytic converter.
      E.O. NumberD167-27
      NotesCHEVROLET Class "A" Motorhomes with a 396-454 BB Chevy
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnYes
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorNo
      Footnotes(1) Without smog injection or injection heads.
      (38) 16 gauge tubing.
      (4) Includes parts necessary to retain emission devices. (50 State)
      (42) Square port headers.
      (6) Modification to stock exhaust required to retain catalytic converter.
      E.O. NumberD167-27
      NotesCHEVROLET Class "A" Motorhomes with a 396-454 BB Chevy
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnYes
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorNo
      Footnotes(1) Without smog injection or injection heads.
      (38) 16 gauge tubing.
      (4) Includes parts necessary to retain emission devices. (50 State)
      (42) Square port headers.
      (6) Modification to stock exhaust required to retain catalytic converter.
      E.O. NumberD167-27
      NotesCHEVROLET Class "A" Motorhomes with a 396-454 BB Chevy
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnYes
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorNo
      Footnotes(1) Without smog injection or injection heads.
      (38) 16 gauge tubing.
      (4) Includes parts necessary to retain emission devices. (50 State)
      (42) Square port headers.
      (6) Modification to stock exhaust required to retain catalytic converter.
      E.O. NumberD167-27
      NotesCHEVROLET Class "A" Motorhomes with a 396-454 BB Chevy
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnYes
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorNo
      Footnotes(1) Without smog injection or injection heads.
      (38) 16 gauge tubing.
      (4) Includes parts necessary to retain emission devices. (50 State)
      (42) Square port headers.
      (6) Modification to stock exhaust required to retain catalytic converter.
      E.O. NumberD167-27
      NotesCHEVROLET Class "A" Motorhomes with a 396-454 BB Chevy
      Vehicle Specific Information
      Air ConditioningYes
      Power SteeringYes
      Auto Transmission - ColumnYes
      Auto Transmission - FloorYes
      Manual Transmission - ColumnNo
      Manual Transmission - FloorNo
      Footnotes(1) Without smog injection or injection heads.
      (38) 16 gauge tubing.
      (4) Includes parts necessary to retain emission devices. (50 State)
      (42) Square port headers.
      (6) Modification to stock exhaust required to retain catalytic converter.
      E.O. NumberD167-27
      NotesCHEVROLET Class "A" Motorhomes with a 396-454 BB Chevy
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