Precision laser cut from 3/8" thick Steel, our header flanges are manufactured in the U.S.A. and are machine surface. These header flanges are designed for the Buick 455 Heads with a rectangle exhaust port.
Port Size: 1.904"
Preformed header flange stubs are 2"-3" in length, with one end perfectly formed to the shape of the exhaust port on the header flange. Many flanges come with several options in primary tube sizing that is pertinent to each application.
Not compatible with standard Buick 455 GSX Stage III heads.
We carry over 300 different flange designs, if you don't see something you need, or for any questions, give one of our specialists a call at 1-800-290-3920. Custom flange designs and one-off laser cutting on header flanges is also available.
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