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Technical 1939 open drive t5 s10 4x4 rear. what driveline s10?

Discussion in 'Traditional Customs' started by taddibbes, Aug 10, 2026.

  1. taddibbes
    Joined: Jan 14, 2011
    Posts: 26

    taddibbes
    Member
    from tulare ca

    Hello all, i am in the process of converting my 39 coupe to an open driveline. so far i have a 216 adapter plate, t5 trans and a rearend out of a 1988 s10 blazer 4x4. I am wondering if an s10 driveline would work? Am i able to shorten it and run it? If not, what driveline are you guys using?

    thanks
     
  2. alchemy
    Joined: Sep 27, 2002
    Posts: 23,467

    alchemy
    ALLIANCE MEMBER

    Driveshaft. The driveline is the whole combo, from engine through rearend.

    Probably best to take some precise measurements between trans and rear yoke to a driveshaft shop. Getting a perfect balance on the shaft is very important.
     
    Outback likes this.
  3. gimpyshotrods
    Joined: May 20, 2009
    Posts: 24,636

    gimpyshotrods
    ALLIANCE MEMBER

    Maybe. Both ends of than OEM setup use a 3R u-joint, and it all goes together.

    You have rightly realized that there is a length issue. Driveshafts in the S10 varied over the years. Not all are one-piece, and some had a step in diameter. Some can be shortened, some cannot.

    Since that configuration of parts exists in a great many GM vehicles, a donor shaft could also be found, and shortened. That cl*** of u-joint was used in GM cars and light trucks for decades, as was that spline count transmission yoke (27-spline, T4/T5/TH350/2004R/700R4, and a few others).

    It is possible that one exists in the correct length already, but there is no "master list" of driveshaft lengths. Some lengths are ****tered across the internet, and would need to be dug up.
     
  4. taddibbes
    Joined: Jan 14, 2011
    Posts: 26

    taddibbes
    Member
    from tulare ca

    thank you for the information
     
  5. taddibbes
    Joined: Jan 14, 2011
    Posts: 26

    taddibbes
    Member
    from tulare ca

    thank you for the information
     
  6. Okie Pete
    Joined: Oct 29, 2008
    Posts: 6,605

    Okie Pete
    Member

    Look for a power drive shop , a large truck shop that builds new drive shafts in your area . I use a company in Wichta KS to build driveshafts for my trucks and my 57 Fairlane .
    I used google and found Performance Driveline in Bakersfield. Maybe they can help you out .
    I’ve watched my Grandpa shorten a drive shaft that was too long and weld it back together with success. But it was for a slow moving farm truck. A out of balance or even a driveshaft with the yokes not clocked right can make a mess of things . Sometimes it’s best to let the pros do it .
     
    Last edited: Aug 14, 2026
    firstinsteele and Toms Dogs like this.
  7. taddibbes
    Joined: Jan 14, 2011
    Posts: 26

    taddibbes
    Member
    from tulare ca

    awesome, thank you for the info
     

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