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Big Block Chevy Single Header Flange
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This precision laser cut Big Block Chevy single header flange is cut from 3/8" thick 1018 cold rolled steel, our header flanges are manufactured in the U.S. and are machine surfaced. These header flanges are specifically made for the Big Block Chevy head.
We carry over 250 different header flange designs, so if you don't see the flange your looking for, talk with one of our tech reps about custom header flange cutting.
Flanges Sold Separately
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Buick Nailhead Header Flange
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This precision laser cut Small Block Chevy header flange is cut from 3/8" thick 1018 cold rolled steel, our header flanges are manufactured in the U.S. These Buick Nailhead header flanges are sold as a single flange, requires 2 flanges per head.
Port Size: 1.573"
Preformed flange stubs are 2"-3" long, and have one end perfectly formed to the port shape of the flange using the appropriate tubing size for that port. This can drastically decrease overall build time. If you have questions on sizing or other options, talk with one of our techs for more information.
We carry over 250 different header flange designs, so 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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Subaru EJ257 Mild Steel Header Flange
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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 Subaru EJ257 DOHC 16v boxer-4 engine found in 2004-present Impreza WRX STi's.
Port Size: 1.631"
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GM 4.3L V6 Header Flange 1 5/8" Port
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Precision laser cut from 3/8" thick mild steel, our header flanges are manufactured in the U.S. These header flanges are specifically made for the GM 4.3L V6. This flange has a square port dimension of 1.550" and is designed to be used with a 1 5/8" primary tube.
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GM 4.3L V6 Header Flange 1 3/4" Port
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Precision laser cut from 3/8" thick mild steel, our header flanges are manufactured in the U.S. These header flanges are specifically made for the GM 4.3L V6. This flange has a rectangle port dimension of 1.710" by 1.610" and is designed to be used with a 1 3/4" primary tube.
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Chevy 4.3L V6 Header Flange
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This precision laser cut Chevy 3.4 Liter V6 header flange is cut from 3/8" thick 1018 cold rolled steel, our header flanges are manufactured in the U.S. These header flanges are specifically made for the Chevy 3.4 Liter V6 head.
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Chevy 3.4 Liter V6 Header Flange
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This precision laser cut Chevy 3.4 Liter V6 header flange is cut from 3/8" thick 1018 cold rolled steel, our header flanges are manufactured in the U.S. These header flanges are specifically made for the Chevy 3.4 Liter V6 head.
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Aston Martin V-12 Mild Steel Header Flange
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Precision laser cut from 3/8" thick mild steel, our header flanges are manufactured in the U.S.A. and are machine surfaced. These header flanges are specifically made for the Aston Martin V-12 6.0L engine.
Port Size: 1.759"
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Jeep 3.8L V6 Mild Steel Header Flange
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Precision laser cut from 3/8" thick mild steel, our header flanges are manufactured in the U.S.A. and are machine surfaced. These header flanges are specifically made for the Jeep 3.8L V6 engines.
Port Size: 1.748"
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Buick V-6 "Fireball" Mild Steel Header Flange
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Precision laser cut from 3/8" thick mild steel, our header flanges are manufactured in the U.S.A and are machine surfaced. These header flanges are specifically made for the V-6 Fireball engine made by Buick in 195, 225, and 231 cubic inch blocks from 1962-1981.
Port Size: 1 .551"
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