Pontiac Firebird 5.0L / 5.7L with Air Conditioning without Smog Injection or Injection Heads with Power Steering with Angle Plug Heads with 350 Turbo Transmission / with 700R4 Transmission with Gen 1 SB Chevy Engine with Dual Exhaust 1991, Standard Duty Mild Steel Long Tube Racing Exhaust Headers by Hedman Hedders®. Primary Tubing Diameter: 1.625". Collector Outlet Diameter: 3". Emissions: Racing Only. Header Style: Long Tube. The standard-duty Hedman Hedders come from the factory with an extremely durable, protective ceramic-metallic coating. Hedman Hedders, pioneered the use of ceramic-metallic coatings, back in the early 80's.
- Must modify rotary A/C bracket.
- Modification To Stock Exhaust Required To Retain Catalytic Converter.
- This part for Racing or Off-Road use only.
|Series: Standard Duty|
|Header Material: Mild Steel|
|Header Style: Long Tube|
|Primary Diameter: 1.625"|
|Collector Diameter: 3"|
|Emissions: Racing Only|
|Flange Thickness: 0.25"|
|Crossover Pipe Included: No|
|Gasket or Seal Included: Yes|
|Quantity: 1 Pair|
|Inlet Port Shape: Round|
|Primary Tube Gauge: 18G|
- Made of High Quality Materials
- Built to Last
- Made in the USA
- New Bolts and Gasket(S) To Head
- Reducer(S) and Hardware
Previously used exclusively in the aerospace industry, Hedman Hedders recognized it's potential for improving both the lifespan, and functionality of exhaust headers.
Hedman Stainless Steel Headers use sturdy laser cut 3/8" flanges, and all primary tubes have smooth-flowing mandrel bends.
The factory black paint applied to uncoated headers is not hi-temp, and is for pre-installation protection only. For the ultimate in protection against the elements, Hedman Hedders suggest Hedman's Original HTC coating.
All Hedman street Hedders are MADE IN THE USA, and are backed by a lifetime warranty against manufacturing defects!
Hedman Hedders®, a prominent header manufacturer for racing and street header marketplaces, started as a one-man shop in 1954. At first the company's products were designed for straightline drag racers. Over time they became highly popular with elite racing engine builders and racers for their outstanding performance and proven reliability. Made to environmental requirements using the latest computer technology, Hedman Hedders headers are guaranteed to outlast any headers you've used before.