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  • Joe Johnston
    Super-Experienced
    • Dec 23 2008
    • 720

    #16
    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.

    Comment

    • paul274854
      Apprentice
      • Mar 10 2011
      • 73

      #17
      CASCO has the gasket Part # 9433. I believe it is made by Best Gasket

      Originally posted by Eric S
      Paul mentioned above a special intake gasket that has a smaller hole that pretty much eliminates the burnt intake runner.
      Where can we get it?
      Midland Park, NJ
      56 TBird, 54 Ford, 48 Ford,

      Comment

      • Eric S
        Super-Experienced

        • Jun 10 2018
        • 1054

        #18
        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

        • Eric S
          Super-Experienced

          • Jun 10 2018
          • 1054

          #19
          Reply from Thunderbird Headquarters :
          The 9433R has restricted ports for the cross over exhaust to slow the burning of the paint on the intake

          Comment

          • Eric S
            Super-Experienced

            • Jun 10 2018
            • 1054

            #20
            The gasket from Larry is the regular version. You can't tell from the picture as they are either the wrong picture or the difference is not visible on pictures.

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