BB head casting numbers?

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  • Jerry G.
    Extremely Frequent Poster
    • April 1, 1985
    • 1022
    #1

    BB head casting numbers?

    My buddy just purchased a bb 67 . The heads have a casting number of 346236 and a date of C13 79 and a casting mark of GM2T. These heads are on a block 3963512 which I think is a service block assembled in 1969. Anybody have an idea what these heads are and if they are compatible with the block?
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    • Clem Z.
      Expired
      • January 1, 2006
      • 9427
      #2
      Re: BB head casting numbers?

      346236 1975-87 oval port open chamber 454
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        • Jerry G.
          Extremely Frequent Poster
          • April 1, 1985
          • 1022
          #3
          Re: Thankyou Clem

          This engine seems to be a strange assemblage of parts.
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            • Clem Z.
              Expired
              • January 1, 2006
              • 9427
              #4
              Re: Thankyou Clem

              this may have been done to lower the compression so it would run on the fuel now available.
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