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#41828140
$366.99
/set
Factory Shipped
Quantity
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Long Tube Header Tube Type, Oval Exhaust Port Shape
| MFG. Part # | 28140 |
| Header Tube Type | Long Tube |
| Exhaust Port Shape | Oval |
| Flange Style | Standard |
| Primary Tube Diameter | 1-5/8" |
Made to Order
This custom item will ship when completed
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Return PolicyHedman 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 provides ample exhaust flow to let your 326-455 Pontiac engine breathe easy, and produce maximum horsepower and torque. These headers are uncoated, and ship from the factory with a temporary black paint that will burn off when submitted to normal operating temperatures. They are also available with a ceramic-metallic finish.
Each set includes a pair of 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.
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| Uncoated | |
FINISH TYPE| UNCOATED Mild Steel! Shipped with Temporary Paint. | |
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| Uncoated | |
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
For race/ off road use or for use on pre-1966 vehicles.
| KEY SPECS | |
|---|---|
| MFG. Part # | 28140 |
| 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 | Natural |
| Weld-Up | No |
| Collector Diameter | 3 Inch |
| Finish | Uncoated |
| Hardware Included | Yes |
| Gasket(s) Included | Yes |
| Collector Reducers Included | Yes |
| Collector Reducer Exit Diameter | 2.5" |
| 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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