1965 375 HP water pump pulley part number - NCRS Discussion Boards

1965 375 HP water pump pulley part number

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  • Dominic P.
    Frequent User
    • February 1, 1997
    • 72

    1965 375 HP water pump pulley part number

    Can some please advise on the correct part number for a 1965 327-375 H.P. water pump pulley.
    If you have a photo of an original pully for this application, that would be apprecited as well.
    Thanks,
    Dominic.
  • Michael H.
    Expired
    • January 29, 2008
    • 7477

    #2
    Re: 1965 375 HP water pump pulley part number

    Dominic,

    The GM part number is 3770245. The part number may be stamped on the face of the pulley.
    Last edited by Michael H.; November 21, 2011, 04:52 PM.

    Comment

    • Dominic P.
      Frequent User
      • February 1, 1997
      • 72

      #3
      Re: 1965 375 HP water pump pulley part number

      Michael,
      Thank you!...whatever details you can supply would be appreciated!
      Dominic.

      Comment

      • Michael H.
        Expired
        • January 29, 2008
        • 7477

        #4
        Re: 1965 375 HP water pump pulley part number

        Originally posted by Dominic Presty (28750)
        Michael,
        Thank you!...whatever details you can supply would be appreciated!
        Dominic.
        Here's a link to a picture of a new 3770245 pulley.

        https://www.forums.ncrs.org/attachme...6&d=1319683458

        Comment

        • Dominic P.
          Frequent User
          • February 1, 1997
          • 72

          #5
          Re: 1965 375 HP water pump pulley part number

          Michael,
          SUPER!!!!
          Thank you,
          Dominic.

          Comment

          • Wayne M.
            Expired
            • March 1, 1980
            • 6414

            #6
            Re: 1965 375 HP water pump pulley part number

            Originally posted by Dominic Presty (28750)
            Michael,
            Thank you!...whatever details you can supply would be appreciated!
            Dominic.
            Here's a pic of one off a '64, no stamped part number on this particular one. Note the lip at the bottom of the cone, where the outer groove was pressed on [at least I think that is how it was done]. Off hand, I'm not aware of other pulleys that have this feature.



            b

            Comment

            • Joe L.
              Beyond Control Poster
              • February 1, 1988
              • 43221

              #7
              Re: 1965 375 HP water pump pulley part number

              Originally posted by Dominic Presty (28750)
              Michael,
              SUPER!!!!
              Thank you,
              Dominic.

              Dominic-----

              The GM #3770245 pulley was actually still available from GM until about 5 years ago when it was discontinued. I think it's available in reproduction and there should be a number of used or NOS pieces around.
              In Appreciation of John Hinckley

              Comment

              • Dominic P.
                Frequent User
                • February 1, 1997
                • 72

                #8
                Re: 1965 375 HP water pump pulley part number

                Wayne,
                Great Photo!!!
                Thank you,
                Dominic.

                Comment

                • John M.
                  Expired
                  • January 1, 1998
                  • 813

                  #9
                  Re: 1965 375 HP water pump pulley part number

                  Heres another one
                  Attached Files

                  Comment

                  • Michael H.
                    Expired
                    • January 29, 2008
                    • 7477

                    #10
                    Re: 1965 375 HP water pump pulley part number

                    Originally posted by John McRae (30025)
                    Heres another one
                    John,

                    I see your pulley has the GM part number. I wonder if the later issue pulley had the number but originals may not have had it??

                    Can I comment on some of your other parts in the picture?

                    Comment

                    • Michael M.
                      Very Frequent User
                      • February 1, 1993
                      • 604

                      #11
                      Re: 1965 375 HP water pump pulley part number

                      Michael, all the #3770245 pulleys I have and seen have the part number stamped into the pulley. Some stamps are deep and some stamps are very faint. Maybe the picture of Wayne's pulley the part number is so faint its hard to see.

                      Comment

                      • Michael H.
                        Expired
                        • January 29, 2008
                        • 7477

                        #12
                        Re: 1965 375 HP water pump pulley part number

                        Originally posted by Michael Mytro (22211)
                        Michael, all the #3770245 pulleys I have and seen have the part number stamped into the pulley. Some stamps are deep and some stamps are very faint. Maybe the picture of Wayne's pulley the part number is so faint its hard to see.
                        You're probably right Michael. I wasn't sure if all had the number.

                        Comment

                        • John M.
                          Expired
                          • January 1, 1998
                          • 813

                          #13
                          Re: 1965 375 HP water pump pulley part number

                          Hi Michael,
                          I just painted that pulley a week ago but it's been on the car since at least 1986.
                          Yes, I'll be asking you to comment on as many parts as possible as I go forward. Those parts in the background are the steering column bracket and clamp on the firewall and the clutch boot retainer and hardware. More pictures later.

                          Comment

                          • Alan D.
                            Extremely Frequent Poster
                            • January 1, 2005
                            • 2038

                            #14
                            Re: 1965 375 HP water pump pulley part number

                            No part number on my Mar64 pulley (owned since 67)

                            Comment

                            • Michael H.
                              Expired
                              • January 29, 2008
                              • 7477

                              #15
                              Re: 1965 375 HP water pump pulley part number

                              Originally posted by Alan Drake (43261)
                              No part number on my Mar64 pulley (owned since 67)
                              Alan,

                              Thanks, I thought I remembered some of these without a part number stamped.

                              Looking at the original print for the 3770245 pulley, it appears that the the code, and possibly the part number were added on 19 Sept 65. (hard to read the small print)

                              I would be interested in more info on this from other 63-64 owners with originals.

                              Comment

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