Description_ASC |
Will not fit angle or raised port heads. Installation requires air conditioning bracket 10925HKR left side or 10926HKR right side. Breaking in an engine with ceramic coated headers WILL result in damage to the coating and will VOID all warranties. Hooker recommends using cast iron exhaust manifolds or old headers during your engine break-in period to avoid damaging your coated 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. |
Description_DEF |
Exhaust Header |
Description_DES |
Hooker Competition Long Tube Headers - Painted |
Description_INV |
HDR 63-74 CHEVY TRUCK 4WD |
Description_EXT |
1969-1974 Blazer/Jimmy/Yukon/Tahoe 2 DR. (4WD), 67-74 1/2, 3/4 & 1 Ton Truck (4WD): 265-400, Tube Size 1.625" O.D. x 27", Collector Size 2.5" O.D., Collector Length 8", Port Shape: Same As Port |
Description_KEY |
chevrolet; chevy; gmc; blazer; jimmy; truck; 4wd; small; block; sbc |
Description_FAB |
Tuned-length primary tubes for better performance |
Description_FAB |
Mandrel-bent tubing for smooth exhaust flow |
Description_FAB |
Light weight & sturdy 16 gauge tubing |
Description_FAB |
Long transition collector for decreased back pressure |
Description_FAB |
5/16" machined flanges for a perfect seal |
Description_FAB |
Industry's best welds for durability |
Description_FAB |
designed for easy, trouble-free fit |
Description_FAB |
All necessary hardware included for a complete installation |
Description_FAB |
Works with factory power steering and power brakes. |
Description_SHO |
Exhaust Header |
Description_MKT |
Hooker Competition headers offer the best value in the high performance header market. Designed for the value-conscious buyer, 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 in. machined flanges. 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. |
Product Type |
Headers |
Collector Diameter |
2.500 in. |
Emission Code |
4 |
Warning |
California Proposition 65 |
Finish |
Black Paint |
CARB (California) Compliant |
No |
Header Style |
Long Tube |
Primary Tube Diameter |
1.625 in. |
WARNING CA Proposition 65 |
Yes |
Coated Finish |
Black |
Material |
Mild Steel |
WARNING CA Proposition 65 Message |
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov |
Application |
Automotive |
Port Shape |
Same As Port/Can Be Matched |
Bolt size |
3/8-16 x 3/4 |
Header Flange Thickness (in) |
5/16 inch |
Primary Tube Dia. |
1-5/8 inch |
Engine Make/Size |
Chevy Small Block |
Head Style |
Long-Tube |
Tube Diameter |
1.625 in. |
Collector Tube Size |
2.500 in. |
Tube Direction |
Down Swept |
Tube Material |
Mild Steel |
Brand |
Hooker |
Engine |
Chevrolet Small Block Gen I |
Header Finish |
Black Paint |
Sale Category |
Exhaust |
Length |
11.0000 |
Width |
17.0000 |
Height |
34.0000 |
Weight |
25.0000 |