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Pontiac 400/455 Ram Air IV Round Port Mild Steel Header Flangeel Header Flange

Pontiac 400/455 Ram Air IV Round Port Mild Steel Header Flange

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Product Code: RM-5400-MSHF
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Pontiac 400/428/455 Ram Air IV Round Port Steel Header Flanges

Precision laser cut form 3/8" thick steel, our header flanges are manufactured in the U.S. and are machine surfaced. These header flanges are specifically made for Ram Air IV style Pontiac V8 heads. Modeled after the 1969-1970 GTO heads, Edelbrock Performer RPM and KRE High Port heads use the same bolt pattern.

Port Size: 1 7/8" and 2" Round Port are available.

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 250 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.

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