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Bolt size

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  • Bolt size

    I have tried to post on the tech forum but it will not let me, so I need to know the exhaust manifold bolt sizes for a 64 289, maybe this can be moved to the tech forum.

  • #2
    3/8 - 24 X 1 - 1/2 inch long. I always buy grade 8, plus a good hardware store will have the correct internal tooth star lock washer as originally used. If you have power steering, the one bolt that also goes through the power steering pump adjusting bracket is 1 - 3/4 inch long.

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    • #3
      Remember to put anti-seize on them before you crank them in!

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      • #4
        Thanks for your help. Off to the hardware store this am.

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        • #5
          I always re-tighten them after getting the engine up to operating temperature.
          Last edited by RadioRoy; 08-05-2012, 04:27 PM.
          RadioRoy, specializing in AM/FM conversions with auxiliary inputs for iPod/satellite/CD player. In the old car radio business since 1985.

          17A-S2 - 50 Commander convertible
          10G-C1 - 51 Champion starlight coupe
          10G-Q4 - 51 Champion business coupe
          4H-K5 - 53 Commander starliner hardtop
          5H-D5 - 54 Commander Conestoga wagon
          56B-D4 - 56 Commander station wagon
          60V-L6 - 60 Lark convertible

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