66 Transmission VIN number - NCRS Discussion Boards

66 Transmission VIN number

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  • Ralph G.
    Infrequent User
    • April 30, 2002
    • 8

    66 Transmission VIN number

    This is my first post, so I hope I do it correctly. I have a 66 small block convertible with a 327/300 4 speed. It is supposed to be a 39,000 mile original car. All numbers check out correctly except the VIN # stamped on the tranny, which is one number off from the car and engine VIN. The car VIN is 194676S120471 with a body build date code of I20 (April 20th). The transmission VIN # stamped on left side of trans case is 6S120470 with a build date of P0421 (April 21st). The transmission VIN is one number earlier than the car VIN, is it possible that an error was make in production? I think it would be very unlikely that one would find a replacement transmission one number earlier than the VIN #. I searched for earlier questions like this but didn't find anything. Does anyone know if something like this has be seen before. Thanks for your help.

    Ralph Goode
  • Edward J.
    Extremely Frequent Poster
    • September 15, 2008
    • 6940

    #2
    Re: 66 Transmission VIN number

    Ralph, I would equate the number being by off one digit as to finding a needle in a haystack. but never say never. I think that the engine and transmission were stamp at the same time, but one never knows, maybe it was coffee break or end of the day.
    Last edited by Edward J.; April 24, 2017, 01:14 PM.
    New England chapter member, 63 Convert. 327/340- Chapter/Regional/national Top Flight, 72 coupe- chapter and regional Top Flight.

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    • Ralph G.
      Infrequent User
      • April 30, 2002
      • 8

      #3
      Re: 66 Transmission VIN number

      Ed, Thanks for your reply. I hope someone has more information on the actual production process, so the possibility of an error can be evaluated.

      Comment

      • Ara G.
        Extremely Frequent Poster
        • January 31, 2008
        • 1108

        #4
        Re: 66 Transmission VIN number

        Tim Gilmore will post with his interesting oddity and it will make you feel good...>ARA

        Comment

        • Ralph G.
          Infrequent User
          • April 30, 2002
          • 8

          #5
          Re: 66 Transmission VIN number

          Thanks, Ara. I look forward to Tim's post.

          Comment

          • Vernon S.
            Frequent User
            • November 1, 1997
            • 32

            #6
            Re: 66 Transmission VIN number

            Ralph, for what it's worth, in the 70's as a police officer I worked auto crime. I was inspecting a 1969 Camaro and the confidential vin number was one digit off compared to the public vin. This was not a re tagged vehicle. Contrary to what GM may or may not admit to, at times these things did occur.

            Comment

            • Michael M.
              Expired
              • February 7, 2011
              • 186

              #7

              Comment

              • Ralph G.
                Infrequent User
                • April 30, 2002
                • 8

                #8
                Re: 66 Transmission VIN number

                Thanks Vernon and Mike for your input. I too believe the error occurred during assembly of the car; because it's just to improbable that a replacement transmission would have a VIN # one digit prior to the car VIN. It's very nice to experience the cooperation of the NCRS members associated with this forum. Thanks, for everyone's input and help.

                Comment

                • Ronald L.
                  Extremely Frequent Poster
                  • October 18, 2009
                  • 3248

                  #9
                  Re: 66 Transmission VIN number

                  Ralph, there is more to this so as to validate that the trans was the one it came from the factory from - get pics of the MAIN case, the tail housing and even the side cover - all three were dated as cast.

                  Comment

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