These tight-fit headers are designed to be used with standard exhaust port Small Block Chevy heads that have angle spark plugs. 1-5/8" primary tubes and 2-1/2" collectors.
Comes with bolts, gaskets and reducers. The port openings on the header are round and work fine on heads with round or rectangle ports.
Small Block Chevy Tight-Fit Header Chart
Armor Hot Coating (AHC) is a heat resistant, ceramic coating applied to the outside of the header. This coating will reflect heat, which helps retain more heat within the header tube while simultaneously speeding up the exhaust flow. Not only will this coating help you make more horsepower, it also keeps your headers rust-free, looking great, and lasting longer (when properly maintained). If you are looking for a show-quality finish for your headers, this is it! Our AHC will withstand exhaust temperatures of up to 1300˚ F.
Use the dimensions in the chart below.
- A = 4"
B = 10-1/4"
- 1-5/8" primary tubes
- 2-1/2” collectors
- 5/16” thick flanges
- Reducers are 2-1/2" inlet, 2-1/4" outlet
Small Block Chevy Tight-Fit Header Chart
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