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Tranny ID - SM420 or SM 465?

Discussion in 'The Garage' started by rcamacho, Mar 28, 2007.

  1. rcamacho

    rcamacho 1/2 ton status

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    I'm picking this up tomorrow on a lark. It's from a 2wd '69GMC. Any idea if it's a 420 or 465?
     
  2. Jimbo*

    Jimbo* 1/2 ton status

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    roswell, new mexico
    SM465 has PTO covers on both sides, whereas SM420 has only one PTO cover.
    Jimbo
     

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