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Drive shaft question

Discussion in 'The Hokey Ass Message Board' started by HOTRODPRIMER, Aug 11, 2010.

  1. HOTRODPRIMER
    Joined: Jan 3, 2003
    Posts: 64,735

    HOTRODPRIMER
    ALLIANCE MEMBER

    It's time to get a new drive shaft made for the Wagon and I know how to measure for the shaft but I'm not sure how far the transmission yoke should be pulled out,,,

    I guess I'm looking for opinions,,what did you guys do? HRP
     
  2. Mike Rotch
    Joined: Jul 15, 2010
    Posts: 166

    Mike Rotch
    Member
    from Easley SC

    Make sure the suspension isn't hanging when you measure.
    I'd look at the yoke and see where the seal use to stop on it (shiney metal vs crusty metal) and go from there. Going to Cline?
     
  3. Deuce Roadster
    Joined: Sep 8, 2002
    Posts: 9,519

    Deuce Roadster
    Member Emeritus

    I uisually look at the yoke I plan on using. Most of the time you will see a shiny ring around on it. That is where it was riding from the factory when originally installed. I set the yoke in the transmission to that ring and move it slightly out ( or in ) about 1/8th of a inch. Then I measure from the center of the U-joint cup to the center of the U-joint cup on the rear end. :D

    Danny ... tell me the distance you need. I have a Hollander exchange ( from the junk yard ) to look and see if there is a factory driveshaft the lenght you need.

    Randy
     
  4. I think there is an actual measurement for yoke depth but I'm sure I don't know what it is. I usually do it just like this myself.

    There is a driveshaft shop in town here that prefers you measure from the center of the differential yoke to the face of the ****** seal. They also want to know what trany you are using or have your slip yoke or both.
     
  5. DANA RED
    Joined: Jan 6, 2009
    Posts: 138

    DANA RED
    Member Emeritus

  6. I was told 3/4th inch. When all done it ended up around 1 1/4.
    Denneys driveshaft has a downloadable form fo r measuring. Yiou can get it shortened and at a bearing shop for much less dough . Don't dp it till you have all the parts on the car to get the pinion angle set.
     
  7. troylee
    Joined: Jul 10, 2007
    Posts: 689

    troylee
    Member

    I use Dynatech in Clawson Mi. They have mesurment sheet you can print off. But at ride hight 5/8 to 3/4 from end of shaft Is what i do. When I get the new shaft< I put a little grease around the yoke to leave a witness mark from the seal when the u joint is seated.
     
  8. carcrazyjohn
    Joined: Apr 16, 2008
    Posts: 4,841

    carcrazyjohn
    Member
    from trevose pa

  9. fab32
    Joined: May 14, 2002
    Posts: 13,985

    fab32
    Member Emeritus

    X2

    Frank
     

  10. I agree .
    Set the rear suspension at ride height. Bottom out the yoke and then pull it out an inch . Measure cross to cross.
     
  11. troylee
    Joined: Jul 10, 2007
    Posts: 689

    troylee
    Member

    I would have to say 1 inch of travel also. I measure from the shaft and that usualy sticks out a 1/4 from the tail shaft. not to confuse just the way i do it. I guess if you get a around an inch you should be ok.
     
  12. onlychevrolets
    Joined: Jan 23, 2006
    Posts: 2,307

    onlychevrolets
    Member

    That's a good question.... the guy that builds our drive shafts wants the length from the end of the output shaft to the face of the yoke. He does the rest. But then I'd call and ask them how they want it measured.
     
  13. Roadsir
    Joined: Jun 3, 2006
    Posts: 4,045

    Roadsir
    Member

  14. I also say 1" and when I had mine shortened for my truck, the driveshaft guy confirmed.
     
  15. 32ratsass
    Joined: Dec 14, 2007
    Posts: 258

    32ratsass
    Member

    Yup! 1 inch at ride height.:)
     
  16. 4ever18
    Joined: Nov 1, 2007
    Posts: 607

    4ever18
    Member

    For me, I've always used the combined width of my index and middle fingers as the measurement of how much yoke shaft should be protruding from the transmission when measuring for a driveshaft. I determined this by checking my stock suspension and original drivetrain 1969 Camaro (I'm always using Chevy drivetrain). I'd suggest checking a stock vehicle which has similiar drivetrain as you're using in your project. This method has never failed me. Best of luck.
     
  17. uglydog56
    Joined: Apr 8, 2008
    Posts: 331

    uglydog56
    Member

    5/8 - 3/4 from bottomed out. If you have light springs and lots of suspension travel, consider more.
     
  18. Roadsir
    Joined: Jun 3, 2006
    Posts: 4,045

    Roadsir
    Member

    Uhh, fingers may vary.

    Or are you saying you'll go over to Hotrodprimers and pull his shaft out and measure it with your two fingers?? I don't know man, that doesn't sound right!:D

     
    Last edited: Aug 11, 2010

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