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Pontiac Header Flanges

Our stainless Pontiac header flanges are precision laser cut from .375 stainless to our exacting specifications. We carry over 250 different header flanges designs. Many of the popular models come in optional primary tube port sizes. They come pre-surfaced and ready for your header building project. If you don't see the flange your looking for, talk with one of our tech reps about custom header flange cutting.

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Pontiac 400/455 Ram Air IV Round Port Stainless Header Flange
Pontiac 400/455 Ram Air IV Round Port Stainless Header Flange
Our Price: $59.95

Precision laser cut form 3/8" thick 304 Stainless 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.

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Pontiac 400/455 Ram Air IV D-Port Stainless Header Flange
Pontiac 400/455 Ram Air IV D-Port Stainless Header Flange
Our Price: $59.95

Precision laser cut form 3/8" thick 304 Stainless 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: 1.862"

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Pontiac 400/455 D-Port Stainless Header Flange
Pontiac 400/455 D-Port Stainless Header Flange
Our Price: $59.95

Precision laser cut form 3/8" thick 304 Stainless Steel, our header flanges are manufactured in the U.S. and are machine surfaced. These header flanges are specifically made for stock V8 Pontiac heads, 326-455 CID.

Port Size: 1.752"

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Pontiac 400/455 Ram Air V Stainless Header Flange
Pontiac 400/455 Ram Air V Stainless Header Flange
Our Price: $59.95

Precision laser cut form 3/8" thick 304 Stainless Steel, our header flanges are manufactured in the U.S. and are machine surfaced. These header flanges are specifically made for V8 Pontiac engines with a split-port Ram Air V style head. DCI Motorsports makes a head which accompanies these flanges.

Port Size: 2.188"

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Pontiac 400/455 Ram Air V Round Port Stainless Header Flange
Pontiac 400/455 Ram Air V Round Port Stainless Header Flange
Our Price: $59.95

Precision laser cut form 3/8" thick 304 Stainless Steel, our header flanges are manufactured in the U.S. and are machine surfaced. These header flanges are specifically made for V8 Pontiac engines with a split-port Ram Air V round port head. DCI Motorsports makes a head which accompanies these flanges.

Port Size: 2.130"

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Pontiac 400/455 Ram Air IV Stainless Header Turbo Flange- 1/2" Thick
Pontiac 400/455 Ram Air IV Stainless Header Turbo Flange- 1/2" Thick
Our Price: $89.95

Precision laser cut form 1/2" thick 304 Stainless Steel, our turbo header flanges are manufactured in the U.S. and are machine surfaced. These turbo header flanges are specifically made for Ram Air IV style Pontiac cylinder heads. Many aftermarket heads also utilize the same bolt pattern, including the Edelbrock Performer, and the Kauffman Racing Engines High Port heads.

Port Size: 2" round port
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