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C1 Engine Code

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  • Rick S.
    Expired
    • January 1, 2003
    • 1203

    C1 Engine Code

    A friend is attempting to determine what the following engine stamp pad numbers translate to for his 1960 fuelie: F620D with no serial number. The block casting # is: 3737739. We believe it is a July 1960 build date car but I will check the birthday on the Wisc NCRS site. I only have C2 books and a Corvette Black Book which isn't much help. Thanks in advance.
    Rick
  • Joe L.
    Beyond Control Poster
    • February 1, 1988
    • 43193

    #2
    Re: C1 Engine Code

    Rick-----

    The GM casting #3737739 block was used for the 1958 model year in passenger cars and Corvettes. The "D" suffix code indicates a 1958-64 283 with 2 barrel carb and Powerglide used in a passenger car. So, putting these 2 facts together, I'd say that the engine block originally resided in a 1958 passenger car with 170 hp 283 and Powerglide.

    The above is also consistent with the fact that there is no VIN derivative on the pad. For the 1958 model year, no VIN derivatives were stamped on the engine pad for Corvettes or passenger cars.
    In Appreciation of John Hinckley

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    • Rick S.
      Expired
      • January 1, 2003
      • 1203

      #3
      Re: C1 Engine Code

      Joe,
      Thank you for your quick response, as always, your input to this forum is invaluable!!!!!

      Regards,
      Rick

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