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NP208 input spline count

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by newyorkin, Apr 29, 2003.

  1. newyorkin

    newyorkin 1 ton status

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    Hey all,

    I have an '83 NP208 in the bed and the original stock '88 NP208 in the truck. The '83 came off a 700R4, so it was basically the same drivetrain as my '88.

    Anyone know if there was a difference in the spline count, or anything else I should be wary of when swapping?

    Thanks!
     
  2. thatK30guy

    thatK30guy 1 ton status Premium Member

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    [ QUOTE ]
    The '83 came off a 700R4, so it was basically the same drivetrain as my '88.


    [/ QUOTE ]

    From that quote, they will both be identical in spline counts and will interchange easily. The only thing you have to watch for is the adaptor since the '83 will be a "tall" version and the '88 a "short" version. Tall and short refer to the height of the adaptor when they are bolted to the crossmembers. An '83 "tall" adaptor sits on a flat crossmember and the '88 "short" adaptor sits on a double-hump member. /forums/images/graemlins/thumb.gif

    Other than the adaptor and crossmember, everything else will swap very easy. /forums/images/graemlins/thumb.gif
     
  3. outlaw612

    outlaw612 1/2 ton status

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    Like Wes said, they are the same. Just use the adapter and crossmember that is currently in the truck and bolt on the new t-case.
     
  4. newyorkin

    newyorkin 1 ton status

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    Cool! Thanks guys.

    Anyone in the market for a Tall 700 to 208 adapter?
     
  5. outlaw612

    outlaw612 1/2 ton status

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    Sent ya a PM
     

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