Hedman Silver Long 3-Tube Headers for 1967-81 Pontiac Firebird with Pontiac V8 | GBP Performance
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Hedman | Silver Long 3-Tube Headers for 1967-81 Pontiac Firebird with Pontiac V8 - Firebird / Base / GTO 1967-1979
Hedman | Silver Long 3-Tube Headers for 1967-81 Pontiac Firebird with Pontiac V8 - Firebird / Base / GTO 1967-1979
Hedman | Silver Long 3-Tube Headers for 1967-81 Pontiac Firebird with Pontiac V8 - Firebird / Base / GTO 1967-1979
Hedman | Silver Long 3-Tube Headers for 1967-81 Pontiac Firebird with Pontiac V8 - Firebird / Base / GTO 1967-1979
Hedman | Silver Long 3-Tube Headers for 1967-81 Pontiac Firebird with Pontiac V8 - Firebird / Base / GTO 1967-1979
Hedman | Silver Long 3-Tube Headers for 1967-81 Pontiac Firebird with Pontiac V8 - Firebird / Base / GTO 1967-1979
Hedman | Silver Long 3-Tube Headers for 1967-81 Pontiac Firebird with Pontiac V8 - Firebird / Base / GTO 1967-1979
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Hedman | Silver Long 3-Tube Headers for 1967-81 Pontiac Firebird with Pontiac V8 - Firebird / Base / GTO 1967-1979
Hedman | Silver Long 3-Tube Headers for 1967-81 Pontiac Firebird with Pontiac V8 - Firebird / Base / GTO 1967-1979
Hedman | Silver Long 3-Tube Headers for 1967-81 Pontiac Firebird with Pontiac V8 - Firebird / Base / GTO 1967-1979
Hedman | Silver Long 3-Tube Headers for 1967-81 Pontiac Firebird with Pontiac V8 - Firebird / Base / GTO 1967-1979
Hedman | Silver Long 3-Tube Headers for 1967-81 Pontiac Firebird with Pontiac V8 - Firebird / Base / GTO 1967-1979
Hedman | Silver Long 3-Tube Headers for 1967-81 Pontiac Firebird with Pontiac V8 - Firebird / Base / GTO 1967-1979
Hedman | Silver Long 3-Tube Headers for 1967-81 Pontiac Firebird with Pontiac V8 - Firebird / Base / GTO 1967-1979

Hedman Hedders

Hedman | Silver Long 3-Tube Headers for 1967-81 Pontiac Firebird with Pontiac V8 - Firebird / Base / GTO 1967-1979

28146
Hedman Hedders – Silver HTC Ceramic-Metallic long-tube headers, mild steel, ball & socket gasketless collector (SKU 28146). For Pontiac Firebird, GTO, 326-455.
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Hedman Hedders – Exhaust Headers

Description

Hedman Hedders has been manufacturing quality headers in the USA since 1954. The silver HTC long-tube headers (SKU 28146) are crafted from smooth-flowing, CNC mandrel-bent mild steel tubes, hand-welded to ensure a consistent fit from one pair to the next. Their long-tube design maximizes horsepower and torque by providing ample exhaust flow for Pontiac 326-455 engines. Hedman's unique ball and socket gasketless collector design allows bolt-on installation even with slight exhaust system misalignment. The polished HTC Silver Ceramic-Metallic finish resists corrosion and withstands temperatures up to 1400°F, backed by a 5-year factory warranty. Depending on vehicle configuration, oil filter relocation may be required. Each set includes gaskets, bolts, 2-1/2 in. ball & socket reducers, and all necessary mounting hardware. Compatible with power steering and automatic transmission.

Specifications

  • Brand: Hedman Hedders
  • Reference (SKU): 28146
  • Category: Long-Tube Exhaust Headers
  • Compatibility: Pontiac Firebird, GTO, 326-455 engines (See Application Section)
  • Material: Mild Steel, Standard-Duty, CNC mandrel-bent
  • Primary Tube Diameter: 1-5/8 in. x 2 in. (stepped), 16-gauge
  • Finish: HTC Polished Silver Ceramic-Metallic (up to 1400°F resistance)
  • Collector: Ball and Socket Style (Gasketless), 3 in.
  • Contents: Headers, 2-1/2 in. ball & socket reducers, gaskets, mounting hardware
  • Replacement Gasket: 27600
  • Emissions: EO# D167-27 (see ARB.CA.GOV for covered vehicles)
  • Condition: New
  • Sold and shipped by GBP Performance

 

Note:

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Compatibility (Application)

MakeModelYearsEngineNotes
PontiacFirebird1967L6 3.8L
PontiacFirebird1977-1979V6 3.8LEngine Version: Pontiac (Note 3)
PontiacFirebird1968-1976L6 4.1L
PontiacFirebird1972-1976L6 4.1LEngine Version: Pontiac (Note 3)
PontiacFirebird1977-1979V8 4.9LEngine Version: Pontiac (Note 3)
PontiacFirebird1977-1979V8 5.0LEngine Version: Pontiac (Note 3)
PontiacFirebird1967V8 5.3L
PontiacFirebird1968-1976V8 5.7L
PontiacFirebird Base1977V8 5.7LCylinder Head: OHV; Engine Manufacturer: GM (Note 1)
PontiacFirebird1972-1979V8 5.7LEngine Version: Pontiac (Note 3)
PontiacFirebird1967-1976V8 6.6L
PontiacFirebird1972-1979V8 6.6LEngine Version: Pontiac (Note 3)
PontiacFirebird1971-1976V8 7.5L
PontiacFirebird1972-1976V8 7.5LEngine Version: Pontiac (Note 3)
PontiacGTO1968-1973V8 6.6LEngine Manufacturer: GM (Note 2)
PontiacGTO1970-1973V8 7.5LEngine Manufacturer: GM (Note 2)
28146
732611281461

Data sheet

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