Transmission serial number decode

Discussion in '1947-1954' started by cmkruse, Apr 10, 2015.

  1. cmkruse

    cmkruse Member

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    I have a muncie 3 spd trans (318- cast 591615) with casting numbers for 48-54 Commercial. The serial number is KOI66392. Any Idea what the KOI means? :confused:
     
  2. Kens 50 PU

    Kens 50 PU Member

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    Craig, K is the designation for 1952 and O stands for Muncie. Check again to see if that is an I or a 1. My bet is 1, as that would be the first digit of the production #.
     
  3. cmkruse

    cmkruse Member

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    Thanks, I'll check on the "1" and post back. Trans also has J21 2, GM 6, casting numbers on it if that means anything.
     
  4. cmkruse

    cmkruse Member

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    I checked the number

    Hi Ken, Here's a picture of the number. It still looks like an "I" to me. This tranny is part of a 54 engine and I guess they used the old 52 tranny that was in the truck at the time.:D
     

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  5. Bill Hanlon

    Bill Hanlon Member

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    A lot of those stamp sets only had one stamp to be used for both 1 and I, one stamp for O and 0 and one stamp for 6 and 9.
     

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