Hedman Hedders - 28146
Headers - Street - 1.625 to 2 in Primary - 3 in Collector - Steel - Metallic Ceramic - Pontiac V8 - Pontiac A-Body / F-Body - Pair
HTC Coated Headers; 1-5/8-2 in. Tube Dia.; 3 in. Coll.; FULL LENGTH Design
Hedman Hedders has been manufacturing quality headers in the USA since 1954, and they've been manufacturing long and MID-LENGTH tube headers for Pontiac models for decades. Each set uses mild steel, smooth flowing, CNC mandrel bent tubes, that are hand-welded to ensure each pair is identical to the next. Hedman's unique, gasketless ball and socket collector design allows your Firebird, GTO, Lemans, Grand Prix or Tempest exhaust system to bolt up, even if it is not perfectly aligned with the header collectors.
The LONG-TUBE design of these headers provides ample exhaust flow to let your 326-455 Pontiac engine breathe easy, and produce maximum horsepower and torque. These headers have a high temperature POLISHED-SILVER ceramic finish that resists corrosion, and can withstand temperatures up to 1400 degree F. This finish is covered by a 5 year factory warranty, in addition to Hedman's standard lifetime header warranty.
Each set includes a pair of header gaskets, header flange bolts and collector bolts. No collector gasket is needed. Due to the location of the oil filter on these vehicles, relocation of the oil filter may be required to provide header tube clearance. We recommend the use of a Trans-Dapt Performance Products' #1120 (cast aluminum), or Hamburger's Performance Products #3365 (billet aluminum) oil filter relocation kit. Hedman Hedders is so confident in the quality of its headers that these headers are factory backed by a Limited Lifetime Warranty.
- Handcrafted, Mild Steel Construction.
- Long Tube Header Design Provides Excellent Top-End Horsepower and Torque.
- Ball & Socket Collector Design requires No Gasket, and Allows For More Exhaust System Misalignment than Old School, Gasket-Style Header Collectors
- Includes All The Necessary Mounting Hardware, Gaskets and Reducers (exhaust adapters)
- Limted Lifetime Warranty On Construction, Five Year Warranty on Factory-Applied Header Coating!
- Proud To Say, Made In The USA, Since 1954!
Tube Design: Standard
Header Fasteners Included: Yes
Bolts/Studs Included: Yes
Gasket Or Seal Included: Yes
Header Style: Long Tube
Reducers Included: Yes
Air Conditioning: Yes
Collector Size: 3 in.
Collector Style: BALL and SOCKET Style (Gasketless)
Emissions Notes: EO# D167-27 (click here for covered vehicles in document on ARB.CA.GOV website)
Exhaust System Dia: 2-1/2 in.
Finish: HTC Polished Silver Ceramic-Metallic
Finish Type: HTC SILVER (polished) Ceramic-metallic Coating
Flange Style: Standard
Replacement Head Flange Gasket: 27600
Material: Mild Steel
Power Steering: Yes
Reducer Outlet Size: 2-1/2 in.
Tube Diameter: 1-5/8 in. x 2 in.
Tube Length: Long Tubes
Tube Size: 1-5/8 in. x 2 in.
Variations: 28140
Cylinder Head Port Shape: Oval
Header Finish: HTC Polished Silver Ceramic-Metallic
Header Material: Mild Steel
Mounting Hardware Included: Yes
Primary Tube Diameter (in): 1.625 in. x 2 in.
Tuned: No
Weld-Up: No
Catalytic Converter(s) Included: No
Crossover Pipe Included: No
Motor Mounts Included: No
Quantity: Sold as a pair.
Cylinder Head: Stock Profile Heads
Replacement Gasket: 27600
Installation Hardware Included: Yes
with A.I.R. System: No
with EGR: No
Y-Pipe Included: No
Collector Attachment: 3 in.
Header Construction: MILD STEEL- Standard-Duty
E.O. #: Yes
Header Port Shape: Oval Port
Port Shape: Oval
Collector Bolts Included: Yes
Contents: headers, gaskets (when applicable), 3-bolt exhaust adapters, hardware
Installation Notes: Modification to reverse lockout (back drive) mechanism may be required.
Installation Notes: Some heads may require drilling and tapping of end bolt holes.
Notes: 64-81 Various Pontiac Cars 326-455
Collector Diameter: 3 in.
Tube Style: Long Tubes
Package Contents: Headers, ball and socket reducers (exhaust adapters), gaskets, mounting hardware
Tube Material Thickness: 16g
Primary Tube Gauge: 16g
Flange Thickness: 0.3125 in.
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