1967 5455509 Master Cylinder Strange Stamp - NCRS Discussion Boards

1967 5455509 Master Cylinder Strange Stamp

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  • Richard M.
    Super Moderator
    • August 31, 1988
    • 11288

    1967 5455509 Master Cylinder Strange Stamp

    Going through piles of take-off stuff to clean up the shop........

    P5300092.jpg P5300093.jpg P5300094.jpg P5300095.jpg

    The stamp "7C" has me confused on this 5455509 Master Cylinder. I know 1967 had "DC" stamps for both brake types(Power or not), and J56 used "PG" IIRC.

    Does 7C sound like a GM service replacement made in March of 1967? It has a yellow stamp on it....."REMFG" with something below it I cannot read.

    Thanks,
    Rich
  • Terry M.
    Beyond Control Poster
    • September 30, 1980
    • 15569

    #2
    Re: 1967 5455509 Master Cylinder Strange Stamp

    Originally posted by Richard Mozzetta (13499)
    Going through piles of take-off stuff to clean up the shop........

    [ATTACH=CONFIG]53089[/ATTACH] [ATTACH=CONFIG]53090[/ATTACH] [ATTACH=CONFIG]53091[/ATTACH] [ATTACH=CONFIG]53092[/ATTACH]

    The stamp "7C" has me confused on this 5455509 Master Cylinder. I know 1967 had "DC" stamps for both brake types(Power or not), and J56 used "PG" IIRC.

    Does 7C sound like a GM service replacement made in March of 1967? It has a yellow stamp on it....."REMFG" with something below it I cannot read.

    Thanks,
    Rich
    I am not sure what 7C means, but the yellow "REMFG" is a dead give-away.
    Terry

    Comment

    • Richard M.
      Super Moderator
      • August 31, 1988
      • 11288

      #3
      Re: 1967 5455509 Master Cylinder Strange Stamp

      Yes it means "Remanufactured", rebuilt or whatever. Just trying to figure out the "7C". It came from a Nov built '67, and obviously replaced at some time in it's life.

      I've had it lying around, scrap, or save? Taking up valuable shelf space.

      Anybody want it for the cost of shipping of a 10 lb package. These things are heavy.

      Rich

      oh btw it has a nice chrome top cover with it.

      Comment

      • Edward B.
        Expired
        • March 29, 2013
        • 691

        #4
        Re: 1967 5455509 Master Cylinder Strange Stamp

        It's not "7C" but "ZC", which is a late 1972 Corvette application.

        Ed
        Last edited by Edward B.; May 30, 2014, 03:42 PM.

        Comment

        • Edward B.
          Expired
          • March 29, 2013
          • 691

          #5
          Re: 1967 5455509 Master Cylinder Strange Stamp

          Forgot to attach the picture.

          Ed
          Attached Files

          Comment

          • Richard M.
            Super Moderator
            • August 31, 1988
            • 11288

            #6
            Re: 1967 5455509 Master Cylinder Strange Stamp

            Ed, Thanks for finding that. I always thought it was a 7. "ZC"....Hmmm, Late '72? Is that in the C3 Judging Guide?

            Makes sense then. I better not give it away.

            Here's another close up, after I cleaned the dirt..........Thnx, Rich

            P5300090.jpg

            Comment

            • Edward B.
              Expired
              • March 29, 2013
              • 691

              #7
              Re: 1967 5455509 Master Cylinder Strange Stamp

              Not sure if it's in the Guide, but I found it online at PARAGON.

              Note that some cars produced in late 1972 have "ZC" instead of "DC" stamp.
              Ed

              Comment

              • Terry M.
                Beyond Control Poster
                • September 30, 1980
                • 15569

                #8
                Re: 1967 5455509 Master Cylinder Strange Stamp

                Originally posted by Richard Mozzetta (13499)
                Ed, Thanks for finding that. I always thought it was a 7. "ZC"....Hmmm, Late '72? Is that in the C3 Judging Guide?

                Makes sense then. I better not give it away.

                Here's another close up, after I cleaned the dirt..........Thnx, Rich

                [ATTACH=CONFIG]53102[/ATTACH]
                Yes, it is in the TIM&JG. There is usually a small numerical (sometimes alpha/numerical) stamp on the machined part where the forward hydraulic line threads in. I didn't see anything there on yours, but then I didn't see the Z either. That machine area may have been spot faced by the rebuilder, but I don't know why they would.
                Terry

                Comment

                • Joe L.
                  Beyond Control Poster
                  • January 31, 1988
                  • 43191

                  #9
                  Re: 1967 5455509 Master Cylinder Strange Stamp

                  Originally posted by Richard Mozzetta (13499)
                  Ed, Thanks for finding that. I always thought it was a 7. "ZC"....Hmmm, Late '72? Is that in the C3 Judging Guide?

                  Makes sense then. I better not give it away.

                  Here's another close up, after I cleaned the dirt..........Thnx, Rich

                  [ATTACH=CONFIG]53102[/ATTACH]

                  Rich------


                  It's exactly what Ed mentions. Also, be aware that the '509' CASTING was used for multiple applications. For the different applications there may have been different final machining and/or different internal parts. The final configuration of the COMPLETE MASTER CYLINDER assembly is defined by the broadcast code stamped on the front. In many cases, it's possible to reconfigure a master cylinder from its original application to another application by changing the internal parts. In that case, the original stamping becomes meaningless. Obviously, the master cylinder you have has been remanufactured. In such a case, the stamped code may be meaningless.
                  In Appreciation of John Hinckley

                  Comment

                  • Richard M.
                    Super Moderator
                    • August 31, 1988
                    • 11288

                    #10
                    Re: 1967 5455509 Master Cylinder Strange Stamp

                    Great info guys, thanks. Terry, I'll check that forward port machined face for any other stamps in the morning. I'll clean it up for a better look.

                    Rich

                    Comment

                    • Richard M.
                      Super Moderator
                      • August 31, 1988
                      • 11288

                      #11
                      Re: 1967 5455509 Master Cylinder Strange Stamp

                      Wow you C3 guys are amazing. Terry, I would've never thought to look at that front port. I cleaned it off with some solvent and saw a trace of a "2". Then I lightly brushed it, wiped some more, and there it was!

                      Looks like a 2772. Does that makes sense? Week 27 of 1972? or Feb 7th of 1972?

                      Either way this all coincides with the "ZC" which was on some '72's early spoken about.

                      So........Do you think this was originally on a '72 Corvette, then reman'd later in life? The owner of the '67 it came from said he always went to the Chevy dealer for his parts.

                      Digging up old history is fun. Thanks, Rich

                      P5310092.jpg P5310093.jpg P5310094.jpg

                      Comment

                      • Terry M.
                        Beyond Control Poster
                        • September 30, 1980
                        • 15569

                        #12
                        Re: 1967 5455509 Master Cylinder Strange Stamp

                        Originally posted by Richard Mozzetta (13499)
                        Wow you C3 guys are amazing. Terry, I would've never thought to look at that front port. I cleaned it off with some solvent and saw a trace of a "2". Then I lightly brushed it, wiped some more, and there it was!

                        Looks like a 2772. Does that makes sense? Week 27 of 1972? or Feb 7th of 1972?

                        Either way this all coincides with the "ZC" which was on some '72's early spoken about.

                        So........Do you think this was originally on a '72 Corvette, then reman'd later in life? The owner of the '67 it came from said he always went to the Chevy dealer for his parts.

                        Digging up old history is fun. Thanks, Rich

                        [ATTACH=CONFIG]53107[/ATTACH] [ATTACH=CONFIG]53108[/ATTACH] [ATTACH=CONFIG]53109[/ATTACH]
                        2772 = 277th day of 1972 = October 3, 1972

                        As Joe said since it is re-manufactured, you don't know what is inside, but someone with a early 1973 might like it.
                        Terry

                        Comment

                        • Joe L.
                          Beyond Control Poster
                          • January 31, 1988
                          • 43191

                          #13
                          Re: 1967 5455509 Master Cylinder Strange Stamp

                          Originally posted by Richard Mozzetta (13499)
                          Wow you C3 guys are amazing. Terry, I would've never thought to look at that front port. I cleaned it off with some solvent and saw a trace of a "2". Then I lightly brushed it, wiped some more, and there it was!

                          Looks like a 2772. Does that makes sense? Week 27 of 1972? or Feb 7th of 1972?

                          Either way this all coincides with the "ZC" which was on some '72's early spoken about.

                          So........Do you think this was originally on a '72 Corvette, then reman'd later in life? The owner of the '67 it came from said he always went to the Chevy dealer for his parts.

                          Digging up old history is fun. Thanks, Rich

                          [ATTACH=CONFIG]53107[/ATTACH] [ATTACH=CONFIG]53108[/ATTACH] [ATTACH=CONFIG]53109[/ATTACH]

                          Rich------


                          I believe the "ZC" coded master cylinder was a Corvette-only application. So, this master cylinder MACHINED CASTING originally resided on a Corvette. Given the date, that was an early 1973 model. This must have been among the last ones with bleeder valves because the valves disappeared from master cylinders about that time.
                          In Appreciation of John Hinckley

                          Comment

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