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SM 465 Identification

Discussion in 'The Garage' started by ks2krpt, May 21, 2003.

  1. ks2krpt

    ks2krpt Registered Member

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    Location:
    Adirondack Mts, NY
    I have a GM, 4 speed tranny which I believe to eb a SM-465.
    The Casting numbers are as follows;
    Top Of Tranny 3901131 GM28
    Right side of Tranny 16 GM 465452
    I am concerned since a SM-465/NP-205 adapter does not match the Tranny bolt pattern. Is it possible the above tranny is a CH-465 ??? How do you identify a 2 wheel vs a 4 wheel drive model ?

    Thanks
    Paul
     
  2. dyeager535

    dyeager535 1 ton status Premium Member

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    Lets not start a CH vs SM thread again, it's never been resolved what either one really means and when one or the other designation was used.

    Sure it's not one of the earlier ones, what were they, 435's?
     
  3. BowtieBlazer

    BowtieBlazer 1/2 ton status

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    sounds like a sm420 /forums/images/graemlins/confused.gif
     
  4. kennyw

    kennyw N9PHW Premium Member

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    Can you post pics?

    This is an SM-420
    [​IMG]
    Notice the large bulge on the side. SM-420 web page /forums/images/graemlins/thumb.gif
     
  5. ks2krpt

    ks2krpt Registered Member

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    Location:
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    KennyW;
    Here is a picture of the SM-465 ?? Tranny that came with the Cummins
    4BTA. There are more pictures at www.vintage-power-wagons.com including the NP-205 adapter. My adapter appears to have the bolt pattern for the SM-420 in the picture you posted. I need to find exactly what tranny is in the picture so I can get it set up for a Swivel Frame I am building. Is the tranny in the picture a 4 wheel drive version, or 2 wheel drive ? I really get confused on GM
    drive lines. I am at home with dodge drivelines. The Cummins and Tranny are sitting in a test stand at the present time.

    Thanks for your help
    Paul [​IMG]
     
  6. Blazer1970

    Blazer1970 1/2 ton status

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    There are two different trannies shown in the pictures at that link. The one in the bottom two pictures is a 2WD SM465. I don't know what the one in the top pictures is.
     
  7. ks2krpt

    ks2krpt Registered Member

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    The top tranny is a NV-4500 married to a NP-205 going in my
    WC-53 Carryall powered with a Cummins 4BTA. Pictures at
    www.dodge-power-wagon.com

    What is the difference in a SM-465 2 wheel dr and 4 wheel dr
    Tranny

    Thanks
    Paul
     
  8. Blazer1970

    Blazer1970 1/2 ton status

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    [ QUOTE ]
    The top tranny is a NV-4500 married to a NP-205 going in my
    WC-53 Carryall powered with a Cummins 4BTA. Pictures at
    www.dodge-power-wagon.com

    What is the difference in a SM-465 2 wheel dr and 4 wheel dr
    Tranny

    Thanks
    Paul

    [/ QUOTE ]

    The difference is the output shaft and the bearing retainer/t-case adapter on the rear. The case and the rest of the gears are the same.
     
  9. ks2krpt

    ks2krpt Registered Member

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    Tim, to sum it up, since its a 2 wheel drive model, that is why the Np-205 adapter bolt pattern does not match the bolt pattern on the tranny ? So I am off to find a 4 wheel drive version ?? Also have to find a NP-205 with a right side forward drop, a friend dropped off a left side drop NP-205 which is useless to me.

    Paul
     
  10. Blazer1970

    Blazer1970 1/2 ton status

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    No, if you have the adapter that goes with the factory 465/205 combo, it will bolt up to the 2WD 465 case. You would have to remove the bearing retainer that is on there now, and change the output shaft. All in all, it would be easier and cheaper to find a 4WD 465 since they are not rare at all, and they are inexpensive. All GM 205s are passenger side drop.
     

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