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U-Joints sizes

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by SF87K5, Jul 18, 2003.

  1. SF87K5

    SF87K5 1/2 ton status

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    I just got a stock 85 K5 with a 350/TH700r4/NP208. It still has stock 10 B axles. I have a 14 B FF I would like to put init. The 14 B is hooked up to a NP203 that is in a 79 K5.
    Here is my question is the U-joint for a NP203 the same as a NP208?
    I would liek to know if I need to find a new rear drive shaft or if I can use the sameone I already got?
    Thanks for your help. /forums/images/graemlins/thumb.gif
     
  2. SF87K5

    SF87K5 1/2 ton status

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    Know one can help. /forums/images/graemlins/confused.gif /forums/images/graemlins/confused.gif
     
  3. K5Dan

    K5Dan 1/2 ton status

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    is the 208 a slip yoke?
     
  4. rick88blaze

    rick88blaze 1/2 ton status

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    the u-joint doesn't change with the transfer case. it changes with the axle. the 14 bolt will have a bigger u-joint. there is a hybrid u-joint to go from a 10 bolt to 14 bolt. the part # is 447 this is a NAPA number.
     
  5. SF87K5

    SF87K5 1/2 ton status

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    Dan,
    Ok I am having a dumb moment. I cant remember what a slip youke looks like.If you get a pic post one are send it to me as a pm ok.

    Rick I was woudnering about the tcase yoke is all. I have the drive shaft for the 14B also.
     
  6. K5Dan

    K5Dan 1/2 ton status

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    wellthe 208 uses a slip yoke . your 203 uses a slip shaft.
     
  7. SF87K5

    SF87K5 1/2 ton status

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    Well I have to bolt the U-joint onto the NP203 useing the bands just like when I bolt it to the axle.
    Let me post the pic of my 203 yoke.
     
  8. SF87K5

    SF87K5 1/2 ton status

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    This is what my 203's yoke looks like.
    [​IMG]
    Does the drive shaft bolt to a np208 the same way?
     

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