1957 key knock out code, 4 digit 1/16 inch font - NCRS Discussion Boards

1957 key knock out code, 4 digit 1/16 inch font

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  • John G.
    Infrequent User
    • January 10, 2009
    • 25

    1957 key knock out code, 4 digit 1/16 inch font

    I am finishing a 1957, early March Corvette. I have Briggs Stratton Octagon head key. The knock out is not stamped. My locksmith said the cut on the key from shoulder to tip is 123523. I am looking for information referencing the GM 4 digit knock out code to that cut. Have any of you come across such a cross reference. Thank you in advance for your help. John Goedeken
  • Gary B.
    Extremely Frequent Poster
    • February 1, 1997
    • 7018

    #2

    Comment

    • John G.
      Infrequent User
      • January 10, 2009
      • 25

      #3
      Re: 1957 key knock out code, 4 digit 1/16 inch font

      100_5876.jpg Attached a picture of keys. Will add another post with more pictures. thank you. John

      Comment

      • John G.
        Infrequent User
        • January 10, 2009
        • 25

        #4
        Re: 1957 key knock out code, 4 digit 1/16 inch font

        100_5899.jpgAnother photo of the 57 key for knock out code identification. Thank you for your assistance in determining the correct code. This key fits all locks of the car. John

        Comment

        • Brian M.
          Very Frequent User
          • November 1, 1994
          • 124

          #5
          Re: 1957 key knock out code, 4 digit 1/16 inch font

          Sent you a PM
          Regards,
          Brian McIntyre

          Comment

          • Gary B.
            Extremely Frequent Poster
            • February 1, 1997
            • 7018

            #6
            Re: 1957 key knock out code, 4 digit 1/16 inch font

            Originally posted by John Goedeken (49851)
            [ATTACH=CONFIG]112177[/ATTACH]Another photo of the 57 key for knock out code identification. Thank you for your assistance in determining the correct code. This key fits all locks of the car. John

            Comment

            • Gary B.
              Extremely Frequent Poster
              • February 1, 1997
              • 7018

              #7
              Re: 1957 key knock out code, 4 digit 1/16 inch font

              John,

              PS: If you are uncomfortable removing your ignition core or seat separator lock, you could take a chance and get a key cut to code 9004 and see if it works.

              Gary

              Comment

              • John G.
                Infrequent User
                • January 10, 2009
                • 25

                #8
                Re: 1957 key knock out code, 4 digit 1/16 inch font

                Thank you Brian and Gary. I will follow up. The locks are original and all working. I am sure the code is on the ignition cylinder. I had them all out during the restoration but every thing is in place and working and I've learned thru the years once you've got something working correctly leave it alone. Thanks much. If I have problems from here I will be inquiring. John

                Comment

                • Jeffrey S.
                  Extremely Frequent Poster
                  • May 31, 1988
                  • 1882

                  #9
                  Re: 1957 key knock out code, 4 digit 1/16 inch font

                  If the key woks the glove box lock as it should, this one is very easy to remove and get the code from the cylinder. Much easier than the other locks.
                  Jeff

                  Comment

                  • John D.
                    Very Frequent User
                    • June 30, 1991
                    • 875

                    #10
                    Re: 1957 key knock out code, 4 digit 1/16 inch font

                    I have a key cutter I got at a swap meet years ago and would be happy to cut a key to code 9004 gratis and mail to you- or your neighbor down the street or mother in law...lol

                    Comment

                    • Gary B.
                      Extremely Frequent Poster
                      • February 1, 1997
                      • 7018

                      #11
                      Re: 1957 key knock out code, 4 digit 1/16 inch font

                      John,

                      Gosh, in that case I hope my decoding of the cuts is correct! The cuts are not a slam dunk.

                      Gary

                      Comment

                      • John D.
                        Very Frequent User
                        • June 30, 1991
                        • 875

                        #12
                        Re: 1957 key knock out code, 4 digit 1/16 inch font

                        gary
                        This might help decode the key too..


                        key code depth.jpg
                        Attached Files

                        Comment

                        • Gary B.
                          Extremely Frequent Poster
                          • February 1, 1997
                          • 7018

                          #13

                          Comment

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