SM-318 3 speed transmission

Discussion in 'Truck Parts for Sale' started by Bill Hanlon, Apr 6, 2017.

  1. Bill Hanlon

    Bill Hanlon Member

    Jun 4, 2002
    Fredericksburg TX
    SM-318 3 speed transmission removed from '57 GMC 152. I have no personal knowledge of its condition, but previous owner says it worked correctly. I have turned the input shaft in each gear and feel no lumps or bumps.

    According to 1960 Master Parts Catalog, this transmission was standard equipment on '55.2 through '60 six cylinder equipped trucks as well as '55.2 and '56 V8 equipped trucks.

    Case casting number 3845122 with a casting date of March 19, 1957

    Tail case casting number 3707195

    Side cover casting number 3845157


    You pay shipping and packaging costs or pick up 30 miles north of Houston Tx. This tranny is HEAVY!

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