Engine case ID

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  • Thad L.
    Expired
    • May 1, 1999
    • 168
    #1

    Engine case ID

    What was it?
    cast #3970014
    cast appears to be 1973
    pad numbers. 13Y138666
    T0120CKL
    Thanks. Thad
    Tags: None
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    • Rick A.
      Extremely Frequent Poster
      • August 1, 2002
      • 2147
      #2
      Re: Engine case ID

      Here's the applications that I found:
      3970014 350 69-77 Pass, Chevelle,Camaro, Nova,Monte Carlo 2 or 4 bolt main
      3970014 350 69-79 Truck 2 or 4 bolt main
      3970014 350 72 Corvette late '72,200 HP,255 HP 4 bolt main
      Rick Aleshire
      2016 Ebony C7R Z06 "ROSA"
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        • David L.
          Expired
          • August 1, 1980
          • 3310
          #3
          Re: Engine case ID

          According to my 1973-75 Chevrolet Parts Catalog (Sept. 1973):
          "CKL" = 1973 Chevrolet Pass. 350 (L65) w/T.H. and 1973 Chevelle 350 w/T.H.
          "13Y" = Chevrolet, 1973, and GMAD - Wilmington assembly plant
          "T" = Tonawanda engine plant

          I have a 3970014 block that I bought in Carlisle, PA, which was from a 1970 Camaro SS350 (L48) with a casting date "E 16 70", stamped "T0518CRE" on front pad and "10N5?1710" near oil filter ("N" = Norwood where east coast Camaro models were made).

          Dave
          Last edited by David L.; January 6, 2016, 09:34 PM.
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            • William C.
              NCRS Past President
              • June 1, 1975
              • 6037
              #4
              Re: Engine case ID

              CKZ was used in '73 MY, Base 4 speed setup. Does the VIN sequence match the car, or is it just an orphan engine?
              Bill Clupper #618
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                • David L.
                  Expired
                  • August 1, 1980
                  • 3310
                  #5
                  Re: Engine case ID

                  "CKZ" = 73-74 Corvette (L48) w/M.T.
                  I believe that most all Corvette 283, 327, and 350 engine blocks were made if Flint except for a few exceptions (maybe a few in 1964 or 1965).
                  "CKL" is not a Corvette engine stamping.

                  Dave
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                    • Joe L.
                      Beyond Control Poster
                      • February 1, 1988
                      • 43129
                      #6
                      Re: Engine case ID

                      Originally posted by Thad Lejeune (32187)
                      What was it?
                      cast #3970014
                      cast appears to be 1973
                      pad numbers. 13Y138666
                      T0120CKL
                      Thanks. Thad

                      Thad------

                      All GM #3970014 blocks were cast at the Tonawanda foundry. For some reason, this was a Tonawanda-only casting number. That's fairly unusual as most small block casting numbers were cast at both Saginaw and Tonawanda.
                      In Appreciation of John Hinckley
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                        • Terry M.
                          Beyond Control Poster
                          • October 1, 1980
                          • 15541
                          #7
                          Re: Engine case ID

                          Some of those 3970014 Tonawanda cast, but Flint machined, cylinder cases found their way into Corvettes in the 1969 to 1973 model years. Obviously (CKL) not this one, however. There was a Restorer story on the subject and the existence of these 0014 cylinder cases is mentioned in both the 1968-69 and 1970-72 TIM&JGs.
                          Terry
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                            • Thad L.
                              Expired
                              • May 1, 1999
                              • 168
                              #8
                              Re: Engine case ID

                              Thanks for the info!!!

                              Thad
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