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NP208 input shaft conversion question

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by Mr.Chevy4x4, Sep 23, 2002.

  1. Mr.Chevy4x4

    Mr.Chevy4x4 1/2 ton status

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    Here is the deal. I have a friend that is running a 208 behind his 700r. The rear u-joint let go at 65 mph. The shaft bounced around and bent the output shaft on his t-case. I have a good 208 but it came out of a CUCV with a turbo 400. Am I right in assuming that the 700/208 is 30 spline and the 400/208 is 32 spline? If so, is installing his 30 spline input shaft into my 32 spline 208 a direct bolt in, or are there bearing size differences like in the 205?

    The reason we don't just swap my output shaft into his t-case is because his has 180k miles and it was driven for a while with the output bent. We are afraid the "wobbling" shaft might have done some internal damage. That is why we would like to use my 60k mile t-case with his input shaft.


    Thanks for the input!

    Mike
     
  2. 95 Silverado

    95 Silverado 1/2 ton status

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    Actually the 700R4 tailshaft is 27 spline, the 400 turbo is 32. I sold a 208 transfer case, 32 spline, to a guy to use behind a 350 turbo, 27 spline, he told me he swapped the input gear out of his old case and it worked great, said it was an easy swap.
     

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