Small Block Ford N351 Sportsman Head Mild Steel Header Flange

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 the N351 Sportsman style heads. These have a square port and an elongated bolt pattern, which works with 2 3/4" and 2 7/8" bolt space head patterns (Track1 Heads have 2.75", N351 heads have 2.875")

Port Size:1.76"

Preformed Flange Stubs are 2"-3" in length, and are formed to perfectly fit the non-round port in the flange. Stubs drastically reduce overall build time and increase builder's efficiency.

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.