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1/2ton to 3/4 u joint part #'s

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by efilnikufecin, May 21, 2002.

  1. efilnikufecin

    efilnikufecin 1/2 ton status

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    1/2ton to 3/4 u joint part #\'s

    i'm getting ready to swap out my 1/2 ton stuff in my 91 K5 and swap in 3/4 ton.what's the part#'s for the conversion u-joint for the rear driveshaft?it will be a 10 bolt to 14bolt ff.thanks in advanced
     
  2. 79Beast

    79Beast 1/2 ton status

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    Re: 1/2ton to 3/4 u joint part #\'s

    I bought a bastard joint from Carquest so I could use my old 1310 driveshaft as a spare in my 1350 driveline. Their PN is 3-3140. On the box it says that the supplier is Neapco and it is made is the USA. Still, the bastard joint will be the weak link in your driveline. If you cannot find the same PN I did, you can have a parts look it up in their book. It should be listed by the Spicer part numbers and is called a Spicer 1310/ 1350 conversion kit.
     
  3. fulltopblazer

    fulltopblazer 1/2 ton status

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    Re: 1/2ton to 3/4 u joint part #\'s

    Mine was a precision 348 I believe from parts plus or napa. Pricey though
     
  4. BurbinOR

    BurbinOR 3/4 ton status

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    Re: 1/2ton to 3/4 u joint part #\'s

    It'll be either Napa 348 or 447
     
  5. bigmack

    bigmack 1/2 ton status

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    Re: 1/2ton to 3/4 u joint part #\'s

    I got mine at Napa - part # 348. They are about $30.00.
     
  6. efilnikufecin

    efilnikufecin 1/2 ton status

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    Re: 1/2ton to 3/4 u joint part #\'s

    thanks guys.
     
  7. coincidentally

    coincidentally Registered Member

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    Re: 1/2ton to 3/4 u joint part #\'s

    did you ever find out the part number of tha thybrid u-joint? i'm currently looking for that same u-joint (same setup as you, moving from a 10-bolt to a 14-bolt FF)
     

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