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Hot Rods 2-Piece Driveshaft in Model A project?

Discussion in 'The Hokey Ass Message Board' started by DeepSouthRick, Nov 30, 2009.

  1. DeepSouthRick
    Joined: May 29, 2006
    Posts: 325

    DeepSouthRick
    Member

    A buddy gave me the driveline from a 67 F100 for the Model A hot rod project this weekend. Bellhousing and tranny bolts right to our 302, so all well. The truck's inline 6 slung a rod, but the tranny is good and he had just replaced the clutch. However, the tranny uses a 2-piece driveshaft (no slip yoke).

    Any thoughts on using a 2-piece driveshaft in a hot rod project? I know rock crawlers don't like slip yoke setups, but we'll be sticking to the asphalt with this ride. We're still working on the chassis, so adding a driveshaft support shouldn't be a hassle at this stage.

    But are there other things to consider?


    Rick
     
  2. Shifty Shifterton
    Joined: Oct 1, 2006
    Posts: 4,964

    Shifty Shifterton
    Member

    Most transmissions convert back and forth from fixed to slip yoke with nothing more than a yoke change. Maybe you're doing the driveshaft yourself, but if a shop's doing it the single shaft with a new slip yoke ought to be cheaper than a dual shaft/fixed yoke setup.

    Besides, yokes are a wear item anyway due to seals wearing grooves.

    good luck
     
  3. krylon32
    Joined: Jan 29, 2006
    Posts: 10,455

    krylon32
    ALLIANCE MEMBER
    from Nebraska
    1. Central Nebraska H.A.M.B.

    Transmission to rearend distance is short. No need for a 2 piece driveshaft. Remember the old phrase KISS.
     
  4. pasadenahotrod
    Joined: Feb 13, 2007
    Posts: 11,775

    pasadenahotrod
    Member
    from Texas

    2-piece drive shafts are usually used on vehicles with a much longer wheelbase than a Model A or T Ford. and they DO have a slip joint at the tailend of the front shaft. If there was no joint the shaft would bind up during suspension flex.
     
  5. carcrazyjohn
    Joined: Apr 16, 2008
    Posts: 4,841

    carcrazyjohn
    Member
    from trevose pa

    Ok Lets see here .You are gonna use a two peice driveshaft for roughly 38 inches,Spend the money and go to speedway for about 85.00
     
  6. Von Rigg Fink
    Joined: Jun 11, 2007
    Posts: 13,401

    Von Rigg Fink
    Member
    from Garage

    my drive shaft is 30" long..on my A build with SBC and 700r4..I wouldnt even think of trying to run two short shafts for this distance..I think your asking for trouble..more shit to go wrong..
    1 shaft, you'll be golden
     
  7. DeepSouthRick
    Joined: May 29, 2006
    Posts: 325

    DeepSouthRick
    Member

    What's the Speedway part? It was also suggested that I check with a local driveshaft shop about havin g a single-piece driveshaft built with the slip in the shaft, so it'll bolt up to the fixed yoke.
     
  8. Shifty Shifterton
    Joined: Oct 1, 2006
    Posts: 4,964

    Shifty Shifterton
    Member

    Let go of the fixed yoke man, it's a $30 part. Just let it go.

    Like it or not there's probably zero useable parts off that driveshaft for your application. Forget you own it. It's only use is to confirm the spline count & seal diameter for the transmission output.

    good luck
     
  9. Von Rigg Fink
    Joined: Jun 11, 2007
    Posts: 13,401

    Von Rigg Fink
    Member
    from Garage

  10. JohnEvans
    Joined: Apr 13, 2008
    Posts: 4,883

    JohnEvans
    Member
    from Phoenix AZ

    First question here ,is this a 3 or 4 speed trans? If the 4 speed totally unsuitable for rod use. Having a one piece drive shaft with the slip on the shaft is OK not any problem. Go talk to a drive-shaft shop for options.
     
  11. HemiRambler
    Joined: Aug 26, 2005
    Posts: 4,207

    HemiRambler
    Member

    I run one in my '34 Plymouth couple my '47 Ford truck an dmy '64 Rambler- all with The Chrysler Cast Iron Pushbutton transmissions. It's not that I have any love for them - it was just the easiest way for me to get them going.

    They ARE expensive to replace but if you already have the pieces parts and they're in good shape I don't see why not - use them.
     

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