63 block numbers and dates - NCRS Discussion Boards

63 block numbers and dates

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  • Chuck G.
    Extremely Frequent Poster
    • May 31, 1982
    • 2029

    #31
    Re: 63 block numbers and dates

    Originally posted by Michael Ward (29001)
    Now that the full story has come out, maybe you should thank the two guys who were actually judging this section of the car too.
    Amen to that, Michael.

    Chuck
    1963 Corvette Conv. 327/360 NCRS Top Flight
    2006 Corvette Conv. Velocity Yellow NCRS Top Flight
    1956 Chevy Sedan. 350/4 Speed Hot Rod

    Comment

    • John D.
      Extremely Frequent Poster
      • December 1, 1979
      • 5507

      #32
      Re: 63 block numbers and dates

      I agree. I have always been under the impression thru out the last 30 years or so of NCRS membership that the casting clock didn't start until sometime in 1964.
      That clock should NOT be on a typical 63 Flint engine for sure. I say typical because the more I learn about these animals the less I know.
      It's a dead give away that the engine is a replacement. This is something we learned in the late 70's and early 80's as I recall. I did anyhow. JD

      Comment

      • Jason A.
        Frequent User
        • June 30, 1998
        • 31

        #33
        Re: 63 block numbers and dates

        Just to confirm the 1964 model year switch-over here is a H293 (8/29/63) Flint block with a clock face. I know I'll be looking at some 64's this summer just to satisfy my curiosity.

        Comment

        • David D.
          Expired
          • January 1, 2005
          • 416

          #34
          Re: 63 block numbers and dates

          Not trying to steal this thread but I read above
          including the length of the pad
          Is this something that changed over the years? If so, can someone please tell me what the differences are?
          Thanks,
          David

          Comment

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

            #35
            Re: 63 block numbers and dates

            Originally posted by David Duell (43184)
            Not trying to steal this thread but I read above
            Is this something that changed over the years? If so, can someone please tell me what the differences are?
            Thanks,
            David
            Here's a short pad 870 from '63 FI #07055. Pic taken in summer '78, when I picked up my purchase and began the 2200 mile trip towing home.

            Notice the gap between the inboard part of the flat stamp pad and that "rib" above the timing cover (in shadow). This also shows the "short leg" letter R.

            This pad was made longer in '64(?)-up, almost becoming integral with the rib.
            Attached Files

            Comment

            • Dino L.
              Very Frequent User
              • February 1, 1996
              • 694

              #36
              Re: 63 block numbers and dates

              September 1963, 870 casting

              Copy of engine casting number.jpg
              Dino Lanno

              Comment

              • David D.
                Expired
                • January 1, 2005
                • 416

                #37
                Re: 63 block numbers and dates

                Originally posted by Wayne Midkiff (3437)
                Here's a short pad 870 from '63 FI #07055. Pic taken in summer '78, when I picked up my purchase and began the 2200 mile trip towing home.

                Notice the gap between the inboard part of the flat stamp pad and that "rib" above the timing cover (in shadow). This also shows the "short leg" letter R.

                This pad was made longer in '64(?)-up, almost becoming integral with the rib.
                Thanks Wayne....

                Anyone know when in '64 the change happeded?

                Anyone have a picture of the difference? (Pic worth 1000 words)

                David

                Comment

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

                  #38
                  Re: 63 block numbers and dates

                  Seems to be a general consensus that the casting clocks started on 870 blocks sometime during the 1964 model year, with posters providing pics of clocks at end of August and in September of 1963.

                  Noland's Vol 2 has an interesting paragraph on pg. 249. He says clock was added as a mid-production year change for 1964. He goes on to descibe the number of dots (10, representing shift hours).

                  This "dots" characteristic wasn't discussed in this long thread. Pics described above for early production '64s show 10 dots in the circle plus one dot above one of the others in the circle, facing inboard, in both cases. I have a November 30th 1964 block (K_30_4) that shows the same, even though this qualifies as a not-too-early '65 block.

                  But then Noland says that later in 1964 production, the 10 dots around the perimeter of the clock were increased to 11, to account for shifts running over the standard 10-hour shift.

                  Anybody seen 11 clock dots in 1964, 1965 or when ?

                  Comment

                  • John H.
                    Beyond Control Poster
                    • December 1, 1997
                    • 16513

                    #39
                    Re: 63 block numbers and dates

                    Originally posted by Wayne Midkiff (3437)
                    Anybody seen 11 clock dots in 1964, 1965 or when ?
                    I have lots of 11-dot clock images from about May '65 up.

                    Comment

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