67-74 GM Big Block Hooker Competition Long Tube Header - Ceramic Coated 2457-1HKR

Item #22309 Brand: Hooker Headers

67-74 GM Big Block Hooker Competition Long Tube Header

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Only $500.95

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Details

67-69 Camaro, 68-74 Nova, 65-70 Full Size: 396-502, Tube Size 2" OD x 27", Collector Size 3.5" O.D., Collector Length 10", Port Shape: Same As Port

Hooker Competition headers offer the best value in the high performance header market. Designed for the value-conscious buyer who is running either a "stock" or "mildly-modified" engine, Hooker Competition headers offer premium features at a very competitive price. Made of durable 16 gauge mild steel tubing, the Hooker Competition header design utilizes a long transition collector to reduce back pressure and increase exhaust flow. A perfect sealing surface is assured with the 5/16" machined flanges, with welded O-ring seals. Experience has proven that this flange size is ideal to maintain header integrity and be pliable enough to seal each exhaust port. Tubing is mandrel-bent to maintain metal strength and provide consistent tube diameter at radii to maximize performance. Hooker Competition headers have a standard finish that features a heat-cured, high-heat-resistant paint. Optionally, the famous Hooker Ceramic Thermal Barrier Coating is available.

Features:

Tuned-length primary tubes for street performance
Mandrel-bent tubing for smooth exhaust flow
Light weight & sturdy 16 gauge tubing
Long transition collector for decreased back pressure
5/16” machined flanges for a perfect seal
Industry’s best welds for durability
Designed for easy, trouble-free fit
All necessary hardware included for a complete installation
Works with factory power steering, power brakes and air conditioning

More info...

(1) 67-74 GM Big Block Hooker Competition Long Tube Header - Ceramic Coated 2457-1HKR

Specifications

Brand: Hooker
Collector Diameter: 3.50 inch
Emission Code: 4
Header Finish: Silver Metallic Chrome
Header Style: Long Tube
Primary Tube Dia.: 2 inch
Product Type: Header
Tube Material: Mild Steel
Part Number: 2457-1HKR

EMMISIONS

This part is legal for sale or use on Racing Use Only Vehicles
The following vehicles are considered Racing Use Only Vehicles:
• Racing Use Only Vehicles are vehicles that are used exclusively for competition that are not registered and that may never be used on the street

WARNING: It is against the law to install this part on an Emissions Controlled Vehicle

Instructions

Instructions for Part# 2457-1HKR

***Does not work with raised port heads. Breaking in an engine with ceramic coated headers WILL result in damage to the coating and will VOID all warranties. Ceramic coated headers require several heat cycles to fully cure before they will withstand extreme heat. Hooker recommends using cast iron exhaust manifolds or old headers to break in new engines to avoid coating damage. Please call Hooker tech service at 270-781-9741 for additional information regarding ceramic coated exhaust products. The use of header wraps can cause the header tubes to crack or rust due to excessive heat and moisture build-up. Hooker does not recommend the use of header wraps as this will void the warranty. Hooker long tube headers do not come with header reducers. Factory style big block frame stands and motor mounts must be used to ensure proper engine locations and header fit. Many aftermarket mount brands relocate motor location which causes the headers to hit certain components.