List of spark plugs used, 53-75? - NCRS Discussion Boards

List of spark plugs used, 53-75?

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  • Mike E.
    Extremely Frequent Poster
    • February 28, 1975
    • 5134

    List of spark plugs used, 53-75?

  • Duke W.
    Beyond Control Poster
    • January 1, 1993
    • 15610

    #2
    Re: List of spark plugs used, 53-75?

    They should be listed in the AMA specs that you can download from the GM heritage Web site. Some years ago I downloading all - back in dial up days... took some time, but I got 'em.

    Duke

    Comment

    • Richard M.
      Super Moderator
      • August 31, 1988
      • 11302

      #3
      Re: List of spark plugs used, 53-75?

      Mike, Here are a few pages from the Parts Books that may help. They're service replacements so not sure if it helps what you with what the factory installed.

      At each page click NEXT(or PREV), lower part of page for more. I started a search by entering a GM part# for the AC45 plug(1559493) and it brought many books pages up. Probably many more in there but I just did this one example.

      up to 1964: This has a good listing for many GM vehicles.


      up to 1970:


      Here is a page with GM Part# to AC #


      I also found the GM# for the big block plug R43N, 5612241 and found a few pages here in the 1979 book.


      Some more cross reference info here....

      Comment

      • Mark S.
        Very Frequent User
        • July 31, 1983
        • 655

        #4
        Re: List of spark plugs used, 53-75?

        Mike:

        I have all the owners manuals. If there are some holes in your research, I can check mine.

        Mark

        Comment

        • Mike E.
          Extremely Frequent Poster
          • February 28, 1975
          • 5134

          #5
          Re: List of spark plugs used, 53-75?

          Thanks for all the help, guys! Now the challenge is sorting out the discrepancies.

          Comment

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