You will have to google or call several Thunderbird specific parts suppliers and ask this specific question. Many parts suppliers like NAPA or Mac's will be clueless. Many years ago I used a piece of .010" Stainless Steel shim on the gasket and completely blocked the passage. NO problems over the years and the intake has not discolored. IF you have a gasoline leak that must be addressed and is a separate issue.
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Casco has a Gasket Set - Intake Manifold - Metal reinforced at the center - designed to extend life where exhaust gases pass through heat tube.
https://www.classictbird.com/Gasket-...ductinfo/9433/
Larry's hasT 9433 Intake Manifold Gasket Set For 1955-1956-1957 Ford Thunderbird (T9433)
https://www.larrystbird.com/product/...sket-set-5557/
Thunderbird Headquarters has
-55-57 Gasket Set, Intake, Y-Block #9433 and
-55-57 Intake Gasket Set With Restricted Exhaust Ports, Y-Block 272, 292, 312 #9433R both with same picture.
https://www.tbirdhq.com/pc_combined_...h_keyword=9433
All those gaskets are similar and all seems to have the central port restricted??Last edited by Eric S; June 15, 2020, 01:52 PM.Comment
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