70-72 copper radiator code tag and overflow tube clip - NCRS Discussion Boards

70-72 copper radiator code tag and overflow tube clip

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  • Mike E.
    Extremely Frequent Poster
    • February 28, 1975
    • 5136

    70-72 copper radiator code tag and overflow tube clip

    I know the MK9 and the A K hose clip come from my 71 LT1 and are correct. Any idea what the MC4 and the A O clip come from? Why would the clips have identification info on them? The A O is about 1/16 inch shorter that the A K, and has a slightly different taper at the bottom end. Any input and help appreciated--always trying to learn!
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  • Joe L.
    Beyond Control Poster
    • February 1, 1988
    • 43198

    #2
    Re: 70-72 copper radiator code tag and overflow tube clip

    Originally posted by Mike Ernst (211)
    I know the MK9 and the A K hose clip come from my 71 LT1 and are correct. Any idea what the MC4 and the A O clip come from? Why would the clips have identification info on them? The A O is about 1/16 inch shorter that the A K, and has a slightly different taper at the bottom end. Any input and help appreciated--always trying to learn!

    Mike------


    I believe the MC4 coding denotes the GM #3030199 radiator used for 1973-76.
    In Appreciation of John Hinckley

    Comment

    • Mike E.
      Extremely Frequent Poster
      • February 28, 1975
      • 5136

      #3
      Re: 70-72 copper radiator code tag and overflow tube clip

      Thanks, Joe. You are so often helpful.

      Comment

      • Russ S.
        Extremely Frequent Poster
        • April 30, 1982
        • 2161

        #4
        Re: 70-72 copper radiator code tag and overflow tube clip

        Joe, Do you know if the MC4 tag is for a 4spd or auto?

        Comment

        • Joe L.
          Beyond Control Poster
          • February 1, 1988
          • 43198

          #5
          Re: 70-72 copper radiator code tag and overflow tube clip

          Originally posted by Russ Steinhaus (5540)
          Joe, Do you know if the MC4 tag is for a 4spd or auto?

          Russ------



          I believe the GM #3030199 radiator had provisions for transmission oil cooler. However, it could be used for either 4 speed or THM.
          In Appreciation of John Hinckley

          Comment

          • Russ S.
            Extremely Frequent Poster
            • April 30, 1982
            • 2161

            #6
            Re: 70-72 copper radiator code tag and overflow tube clip

            But a 4spd car didn't come from the factory with the cooler provisions. Correct??
            Originally posted by Joe Lucia (12484)
            Russ------



            I believe the GM #3030199 radiator had provisions for transmission oil cooler. However, it could be used for either 4 speed or THM.

            Comment

            • Joe L.
              Beyond Control Poster
              • February 1, 1988
              • 43198

              #7
              Re: 70-72 copper radiator code tag and overflow tube clip

              Originally posted by Russ Steinhaus (5540)
              But a 4spd car didn't come from the factory with the cooler provisions. Correct??

              Russ------


              As far as I know, it did not. However, the radiator with transmission cooler, GM #3030199 was ultimately used for SERVICE of both 4 speed and THM-equipped 1973-E1976 Corvettes.
              In Appreciation of John Hinckley

              Comment

              • Russ S.
                Extremely Frequent Poster
                • April 30, 1982
                • 2161

                #8
                Re: 70-72 copper radiator code tag and overflow tube clip

                That would sound right. Thanks

                Comment

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