C1 Exhaust Manifold - NCRS Discussion Boards

C1 Exhaust Manifold

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  • John C.
    Expired
    • December 1, 2003
    • 18

    C1 Exhaust Manifold

    In the process of restoring exhaust manifolds on early 61 270.
    Left #'s are correct Right side ??
    Right reads
    3750556A
    RH 2 SCC GM 6-9-83
    In reasearch in corvette by the numbers 3750556 is correct
    but nothing about the A or 2 SCC GM 6-9-83
    Can someone enlighten me.
    Thanks
    John
  • Mike M.
    NCRS Past President
    • May 31, 1974
    • 8365

    #2
    Re: C1 Exhaust Manifold

    i'll bet there are no casting mold seperation nubs/protrusions along the top of the manifold, making it a service replacement manifold from the 80's. mike

    Comment

    • John C.
      Expired
      • December 1, 2003
      • 18

      #3
      Re: C1 Exhaust Manifold

      Mike

      Looking at the side where the numbers are located.
      There are two flat circles one on each end (right exhaust manifold).
      (left exhaust manifold) Looks like a nipple on each end,
      # 3749965 is correct but??? on date LH 21 GM.
      Thanks for the info
      John

      Comment

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