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#41828146
Hedman Hedders 28146 67-81 Pontiac Headers, HTC
- HTC Coated Headers
- 1-5/8-2 In. Tube Dia.
- 3 In. Coll.
$830.99
/set
Factory Shipped
Quantity
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Product Summary
Long Tube Header Tube Type, Oval Exhaust Port Shape
- HTC Coated Headers
- 1-5/8-2 In. Tube Dia.
- 3 In. Coll.
- Full Length Design
Key Specs
| MFG. Part # | 28146 |
| Header Tube Type | Long Tube |
| Exhaust Port Shape | Oval |
| Flange Style | Standard |
| Primary Tube Diameter | 1-5/8" |
Need To Know
Made to Order
This custom item will ship when completed
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Return PolicyHedman Hedders 28146 Details
Hedman Hedders 28146 Details
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.
Features
- HTC Coated Headers
- 1-5/8-2 In. Tube Dia.
- 3 In. Coll.
- Full Length Design
Application
- 1967 Pontiac Firebird CID 326
- 1968-1970 Pontiac Firebird CID 350
- 1972-1977 Pontiac Firebird CID 350
- 1967-1970 Pontiac Firebird CID 400
- 1975-1979 Pontiac Firebird CID 400
- 1971-1976 Pontiac Firebird CID 455
- 1977 Pontiac Firebird Base CID 350 Naturally Aspirated GAS
- 1973 Pontiac Grand Am CID 350
- 1974-1975 Pontiac Grand Am CID 400
- 1974-1975 Pontiac Grand Am CID 455
- 1972-1974 Pontiac Grand Prix CID 400
- 1973 Pontiac Grand Prix CID 455
- 1964-1966 Pontiac GTO CID 389
- 1967-1973 Pontiac GTO CID 400
- 1970-1973 Pontiac GTO CID 455
- 1964-1967 Pontiac LeMans CID 326
- 1972-1976 Pontiac LeMans CID 350
- 1972 Pontiac LeMans CID 400
- 1974-1977 Pontiac LeMans CID 400
- 1972-1973 Pontiac LeMans CID 455
- 1976 Pontiac LeMans CID 455
- 1964-1967 Pontiac Tempest CID 326
- 1968-1970 Pontiac Tempest CID 350
- 1968-1970 Pontiac Tempest CID 400
Specs
Manufacturer Specs:
| TUBE DIAMETER | 1-5/8 in. x 2 in. |
| TUBE STYLE | Long Tubes |
| AIR CONDITIONING | Yes |
| POWER STEERING | Yes |
| 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 | headers, gaskets (when applicable), 3-bolt exhaust adapters, hardware |
| FINISH | HTC Polished Silver Ceramic-Metallic |
| FINISH TYPE | HTC SILVER (polished) Ceramic-metallic Coating |
| FLANGE STYLE | Standard |
| FLANGE THICKNESS | 0.3125 in. |
| HEADER STYLE | Long Tube |
| NOTES | 64-81 Various Pontiac Cars 326-455 |
| MATERIAL | Mild Steel |
| TUBE DESIGN | Standard |
| TUBE LENGTH | Long Tubes |
| TUBE MATERIAL THICKNESS | 16g |
| TUBE SIZE | 1-5/8 in. x 2 in. |
| WITH AIR SYSTEM | No |
| WITH EGR | No |
| EO | Yes |
| EO # | EO# D167-27 |
| WELD-UP | No |
| TUNED | No |
| BOLTS/STUDS INCLUDED | Yes |
| CATALYTIC CONVERTERS INCLUDED | No |
| 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 | 1.625 in. x 2 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 | Oval |
| CYLINDER HEAD | Stock Profile Heads |
| HEADER CONSTRUCTION | MILD STEEL- Standard-Duty |
| REPLACEMENT GASKET | Hedman Part #27600 |
| REPLACEMENT HEAD FLANGE GASKET | Hedman Part #27600 |
| INSTALLATION NOTES | Modification to reverse lockout (back drive) mechanism may be required. |
| HEADER PORT SHAPE | Oval Port |
| PORT SHAPE | Oval |
| COLLECTOR BOLTS INCLUDED | Yes |
Guides & Documents
Hedman Hedders 28146 Specifications
Hedman Hedders 28146 Specifications
| KEY SPECS | |
|---|---|
| MFG. Part # | 28146 |
| Brand | Hedman Hedders |
| Header Tube Type | Long Tube |
| Exhaust Port Shape | Oval |
| Flange Style | Standard |
| Primary Tube Diameter | 1-5/8" |
| Material Type | Mild Steel |
| Color | Silver |
| Weld-Up | No |
| Collector Diameter | 3 Inch |
| Finish | Polished |
| Hardware Included | Yes |
| Gasket(s) Included | Yes |
| Collector Reducers Included | Yes |
| Collector Reducer Exit Diameter | 2.5" |
| CARB EO# | |
| GENERAL | |
| Sold in Quantity | Set |
| Collector Length | 3" |
| Flange Thickness | 0.3125" |
| Tuned | No |
| Crossover Pipe Included | No |
| Primary Tube Gauge | 16-gauge |
| CARB EO Number | EO# D167-27 |
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Ratings & Reviews
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