need help i.d.ing 6cyl. - NCRS Discussion Boards

need help i.d.ing 6cyl.

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  • Richard S.
    Expired
    • December 15, 2006
    • 53
    #1

    need help i.d.ing 6cyl.

    a friend has a 6cyl with block numbers 3837004 and below that is GM12 followed by the word SPECIAL. the head has B50 then 848/850. water pump 3736587 above GM13. will try to post pictures which i havent done before
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    • Harry S.
      Extremely Frequent Poster
      • July 31, 2002
      • 5295
      #2
      Re: need help i.d.ing 6cyl.

      What are we trying to identify this for?


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        • Richard S.
          Expired
          • December 15, 2006
          • 53
          #3
          Re: need help i.d.ing 6cyl.

          we are just curios to why it has special cast into the side of the block. it has a 1bbl intake manifold and a torque converter bolted to the flywheel
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            • Chuck G.
              Extremely Frequent Poster
              • May 31, 1982
              • 2034
              #4
              Re: need help i.d.ing 6cyl.

              Sounds like a 55-57 truck block, 235 CI

              I did a quick Google, and got a number of hits on that casting number.

              Casting number 3837004 not only 55-57
              http://www.stovebolt.com/ubbthreads/ubbthreads.php?ubb=showflat&Number=802430
              I have a 1949 3100 bought new by my grandfather. I know for a fact this truck has never had a motor swap. the casting number is 3837004. The serial nu...


              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
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