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SM420/465 TO 208 QUESTIONS

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by Judd, Oct 3, 2002.

  1. Judd

    Judd 1/2 ton status

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    Will a SM420 or 465 bolt to a 208 transfer case that was behind a 700R tranny? If it wouldn't, what needs to be done to get it to?
     
  2. m j

    m j 1/2 ton status

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    it is usually much easier to just buy a matched tranny/TC set then to try and swap output and input shafts and source adapters seperately

    /forums/images/graemlins/ears.gif /forums/images/graemlins/burb.gif /forums/images/graemlins/truck.gif /forums/images/graemlins/k5.gif

    all this and no finger icons, wtf
     
  3. GMCLegacy

    GMCLegacy 1/2 ton status

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  4. Judd

    Judd 1/2 ton status

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    Thanks for the replies.
     
  5. u2slow

    u2slow 1/2 ton status

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    You need a 32-spline input on the NP208 to bolt on an 81-91 SM465 (32-spline, long - like 10" stickout - output shaft)

    The SM420 was only ever mounted to a t-case for one year - '67. It was a Rockwell/Timken T221.

    I think the only aftermarket adapters for the SM420 are to bolt on a Landcruiser t-case or a Jeep Dana 300.
     

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