1991 Pontiac Firebird Exhaust Header 8 Cyl 5.7L Hedman
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Features:
- Handcrafted, Mild Steel Construction.
- The Mid-Length Tube Header Design Provides Significantly More Low and Mid-range Power than Cast Manifolds, and Provide Better Ground Clearance And Component Compatibility Than Long Tube Headers.
- 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!
Hedman Hedders has been manufacturing quality headers in the USA since 1954, and they've been manufacturing long and MID-LENGTH tube headers for Chevy Camaros and Pontiac Firebirds 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 Small Block Chevy exhaust system to bolt up, even if it is not perfectly aligned with the header collectors.
These uncoated, MID-LENGTH tube headers fit factory-equipped 5.0L / 5.7L (305/350 cid) V8 Chevy Camaros and Pontiac Firebirds. The smooth 1-5/8 in tube design provides ample exhaust flow to let your third-gen F-Body's engine breathe easy, and produce the horsepower and torque you're looking for.
These headers are uncoated, and ship from the factory with a temporary black paint that will burn off when submitted to normal operating temperatures. For protection against the element and lower underhood temperatures, these headers are also available with a silver or black ceramic-metallic finish.
Each set includes a pair of gaskets, header flange bolts and collector bolts. No collector gasket is needed.
Hedman Hedders is so confident in the quality of its headers that these headers are factory backed by a Limited Lifetime Warranty.
Additional Fitment Information:
| Vehicle | Block | CC | Cylinder Head Type | Region | Fuel Type | Engine | Aspiration | CID |
|---|---|---|---|---|---|---|---|---|
| 1991 Pontiac Firebird | V | - | OHV | United States | GAS | 8 Cyl 5.7L | Naturally Aspirated | 350 |
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General
California Proposition 65
Warning: Cancer. For More Info Visit Www.p65warnings.ca.gov
Header Port Shape
Round
Quantity
Sold As A Pair.
with A.I.R. System
No
Cylinder Head
Stock Profile Heads
Tuned
No
Cylinder Head Port Shape
Round
Header Style
Mid-length Tube
Manual Transmission - Column
No
Flange Style
Standard
Collector Bolts Included
Yes
Bolts/Studs Included
Yes
Automatic Transmission - Floor
Yes
with EGR
No
Tube Material Thickness
- 16g
- 18g
Tube Diameter
1-5/8 In.
Automatic Transmission - Column
Yes
Package Contents
Headers, Ball And Socket Reducers (exhaust Adapters), Gaskets, Mounting Hardware
Reducer Outlet Size
2-1/2 In.
Tube Size
1-5/8 In.
Port Shape
Round
Tube Length
Mid-length Tubes
Manual Transmission - Floor
Yes
Collector Diameter
3 In.
Tube Style
Mid-length
Variations
68476, 68478
Collector Size
3 In.
Header Finish
Uncoated
Mounting Hardware Included
Yes
Weld-Up
No
Collector Attachment
3 In.
Header Fasteners Included
Yes
Y-Pipe Included
No
Contents
Header(s), New Bolts, Gasket(s) To Head, Reducer(s) And Hardware, Instructions
Finish Type
Uncoated Mild Steel
Notes
82-92 Camaro; 82-91 Firebird, T/a 283-400
Motor Mounts Included
No
Primary Tube Diameter (in)
1.625 In.
Crossover Pipe Included
No
Header Construction
- Mild Steel- Standard-duty
- Standard-duty
Replacement Head Flange Gasket
27500
Tube Design
- Mid-length
- Standard
Power Steering
Yes
E.O. #
No
Exhaust System Dia
2-1/2 In.
Flange Thickness
- 0.25 In.
- 0.3125 In.
Air Conditioning
Yes
Installation Hardware Included
Yes
Reducers Included
Yes
Primary Tube Gauge
- 16g
- 18g
Header Material
Mild Steel
Title
Hedman Hedders Standard Uncoated Headers; 1-5/8 In. Tube Dia.; 3 In. Coll.; Mid-length Design
Catalytic Converter(s) Included
No
Replacement Gasket
27500
Collector Style
Ball And Socket Style (gasketless)
Emissions Notes
Not Legal For Street Use On '75-later Model Years! Legal For Off-road Use Only.
Packaging
bar code
732611684705
package quantity
1
length
29.00 in
width
16.50 in
height
8.25 in
weight
21.00 lb
Information on technical characteristics, the delivery set, the country of manufacture and the appearance
of the goods is for reference only and is based on the latest information available at the time of publication.
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