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K20 rear driveline

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by Muddytazz, Dec 16, 2003.

  1. Muddytazz

    Muddytazz 1 ton status

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    On a K20 rear driveline, is both the 14FF yoke end and the 203 yoke end the same u-joint? The PO of my dads burb flipped the driveline putting the slip sleeve down by the 14FF and it vibrates like hell on deceleration(worn out). What I'm trying to figure out is if the PO just flipped it or did he replace part of it? Anyone have any imput?
     
  2. HarryH3

    HarryH3 1 ton status Author

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    All the stock GM stuff that I've worked on had the same size u-joints at each end of the rear shaft. /forums/images/graemlins/cool.gif
     
  3. Muddytazz

    Muddytazz 1 ton status

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    Thanks Harry /forums/images/graemlins/thumb.gif
     
  4. K1Orion

    K1Orion 1/2 ton status

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    The K20 that I got my axles from had a 203 and both u- joints were the same size. When I got it the slip yoke thingy was on the t-case end of the shaft.For what its worth, it wasn't stock, the PO had definitely "tinkered" with it.
     
  5. Muddytazz

    Muddytazz 1 ton status

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    /forums/images/graemlins/thumb.gif thanks
     
  6. R72K5

    R72K5 Banned

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    77 k20 had two sizes, alot of full time 70s k20 were like thios, there was a thread about this not too long ago, i have one right nowq thats 77 k20 and its got small joints for case and large for axle

    it is common and normal
     

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