Big Block Chevy Single Port Mild Steel Header Flange

Precision laser cut form 3/8" thick Mild Steel, our header flanges are manufactured in the U.S. and are machine surfaced. These header flanges are specifically made for Big Block Chevy heads. Many aftermarket heads also utilize the stock Big Block Chevy bolt pattern.

We have these available in 2 1/4", 2 3/8", and 2 1/2" port sizes.

We carry over 450 different header flange designs, so if you don't see the flange you're looking for, talk with one our tech reps about custom header flange cutting.

Flanges sold separately or in sets of 8