Small Block Chevy Mild Steel Header Flange- Round Port

Precision laser cut from 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 stock small block chevy heads. Many aftermarket heads also utilize the stock small block Chevy bolt pattern.

Port Size: 1 5/8" and 1 3/4" round port sizes available

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.