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.
Hedman Hedders HTC Coated Headers; 1-5/8-2 in. Tube Dia.; 3 in. Coll.; FULL LENGTH Design 28146
Specifications:
| Description_DEF | [B@e39e0d0 |
| Description_DES | [B@3d83cf0e |
| Description_EXT | [B@7e951e1e |
| Description_FAB | [B@6b56e618 |
| Description_FAB | [B@2aa8b4c2 |
| Description_FAB | [B@9f0e526 |
| Description_FAB | [B@5fc36fe8 |
| Description_FAB | [B@379242e |
| Description_FAB | [B@6c989e27 |
| Description_INV | [B@62cf9f47 |
| Description_MKT | [B@263710d9 |
| Description_SHO | [B@6c250865 |
| Title | HEDMAN HEDDERS HTC COATED HEADERS; 1-5/8-2 IN. TUBE DIA.; 3 IN. COLL.; FULL LENGTH DESIGN |
| 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 |
| Quantity | Sold as a pair. |
| with EGR | No |
| 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 | 27600 |
| Replacement Head Flange Gasket | 27600 |
| California Proposition 65 | WARNING: Cancer & Reproductive Harm. For more info visit www.P65Warnings.ca.gov |
| Weld-Up | No |
| with A.I.R. System | No |
| Tube Style | Long Tubes |
| Air Conditioning | Yes |
| Installation Notes | Modification to reverse lockout (back drive) mechanism may be required. |
| Material | Mild Steel |
| Tube Design | Standard |
| Tube Length | Long Tubes |
| Tube Material Thickness | 16g |
| Tube Size | 1-5/8 in. x 2 in. |
| Variations | 28140 |
| Tube Diameter | 1-5/8 in. x 2 in. |
| Y-Pipe Included | No |
| Tuned | No |
| Bolts/Studs Included | Yes |
| Catalytic Converter(s) Included | No |
| Flange Thickness | 0.3125 in. |
| Exhaust System Dia | 2-1/2 in. |
| Reducer Outlet Size | 2-1/2 in. |
| Collector Attachment | 3 in. |
| Collector Diameter | 3 in. |
| Collector Size | 3 in. |
| Notes | 64-81 Various Pontiac Cars 326-455 |
| Collector Style | BALL and SOCKET Style (Gasketless) |
| Emissions Notes | EO# D167-27 (click here for covered vehicles in document on ARB.CA.GOV website) |
| Contents | headers, gaskets (when applicable), 3-bolt exhaust adapters, hardware |
| Finish | HTC Polished Silver Ceramic-Metallic |
| Finish Type | HTC SILVER (polished) Ceramic-metallic Coating |
| Header Style | Long Tube |
| Port Shape | Oval |
| Header Port Shape | Oval Port |
| Flange Style | Standard |
| E.O. # | Yes |
| Power Steering | Yes |
This Part Fits:
| Year | Make | Model | Submodel | Notes |
|---|---|---|---|---|
| 1967 | Pontiac | Firebird | BASE | |
| 1968 | Pontiac | Firebird | BASE | |
| 1969 | Pontiac | Firebird | BASE | |
| 1970 | Pontiac | Firebird | BASE | |
| 1971 | Pontiac | Firebird | BASE | |
| 1972 | Pontiac | Firebird | BASE | |
| 1973 | Pontiac | Firebird | BASE | |
| 1974 | Pontiac | Firebird | BASE | |
| 1975 | Pontiac | Firebird | BASE | |
| 1976 | Pontiac | Firebird | BASE | |
| 1977 | Pontiac | Firebird | BASE | |
| 1978 | Pontiac | Firebird | BASE | |
| 1979 | Pontiac | Firebird | BASE | |
| 1973 | Pontiac | Grand Am | BASE | |
| 1974 | Pontiac | Grand Am | BASE | |
| 1975 | Pontiac | Grand Am | BASE | |
| 1972 | Pontiac | Grand Prix | BASE | |
| 1973 | Pontiac | Grand Prix | BASE | |
| 1974 | Pontiac | Grand Prix | BASE | |
| 1964 | Pontiac | GTO | BASE | |
| 1965 | Pontiac | GTO | BASE | |
| 1966 | Pontiac | GTO | BASE | |
| 1967 | Pontiac | GTO | BASE | |
| 1968 | Pontiac | GTO | BASE | |
| 1969 | Pontiac | GTO | BASE | |
| 1970 | Pontiac | GTO | BASE | |
| 1971 | Pontiac | GTO | BASE | |
| 1972 | Pontiac | GTO | BASE | |
| 1973 | Pontiac | GTO | BASE | |
| 1964 | Pontiac | Tempest | BASE | |
| 1965 | Pontiac | Tempest | BASE | |
| 1966 | Pontiac | Tempest | BASE | |
| 1967 | Pontiac | Tempest | BASE | |
| 1968 | Pontiac | Tempest | BASE | |
| 1969 | Pontiac | Tempest | BASE | |
| 1970 | Pontiac | Tempest | BASE |
