Driveshaft length question

Suspension, Steering and Chassis

  1. BUCKEYE FAN

    BUCKEYE FAN Well-Known Member

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    I’m looking for someone who has the same setup to give me a measurement of their drive shaft. When measuring does the car need to be on the ground? Asking because it’s hard to crawl under if not jacked up on stands.

    1969 Dart custom
    Small block
    904 Transmission
    8 3/4 in stock position

    Thanks
     
  2. Slantsix64

    Slantsix64 Well-Known Member

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    The way i measured was from the metal end on the transmisson tail shaft (not the rubber seal area) you measure out to the rearend pumpkin yoke flange flat end. This is how the drive-line shop had me measure. Also i was a cheap ass the shop told me i needed a new front U-JOINT but i was like ehh sounds like bullshit..... Now i have been have a Slighht Vibration at 45000 RPMs lol wish i would of payed the extra 10 bucks lol
     
  3. Car Nut

    Car Nut Mopar Master

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    Build some wheel cribbing.
    CA302F3C-6683-45AB-8734-6BE52D7957B6.jpeg
    64F3EFBC-ACEA-44EA-953E-DF65E8161909.jpeg
     
  4. famous bob

    famous bob mopar misfit FABO Gold Member

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    cente to center of the u joints , weight on the tires .
    U could jack it up and block up all the wheels the same heigth to get under it .
     
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    • BUCKEYE FAN

      BUCKEYE FAN Well-Known Member

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      Thanks guys
       
    • 70aarcuda

      70aarcuda Master Hoader of SBM FABO Gold Member

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      48.875 inches
       
    • BUCKEYE FAN

      BUCKEYE FAN Well-Known Member

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      Here’s my question, the DS fits and goes in, however I’m not sure I have enough room between the rubber boot and the yoke. Any ideas or opinions of this looks normal?

      CA730BD8-0419-4A8D-BEE4-6AF0EE7A2B7D.jpeg

      9CAC96F2-01A8-4F61-A3BD-E967A976DF98.jpeg
       
    • famous bob

      famous bob mopar misfit FABO Gold Member

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      Dang , I forgot , shove the yoke all the way in , take ur measurement and subtract 1''. Every drivesahft company I have used (3) said to do it that way --------sorry.
       
    • RogerRamRod

      RogerRamRod The Older I Get, The Faster I Was

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      Slantsix64, Damn, you slant guys wind the piss outa those things, V8 guys only go up to about 7000.
      “Now i have been have a Slighht Vibration at 45000 RPMs “

      I don’t know how to put one of those Jabby things on the post from my phone
       
    • yellow rose

      yellow rose Doctor of Thinkology.

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      That should be fine. I don’t use that long seal any more. You only need 3/4 inch of movement on the slip joint, unless you are going to motocross your car! The more spline engagement the better off you are. Until the slip yoke bottoms on the output shaft.
       
    • BUCKEYE FAN

      BUCKEYE FAN Well-Known Member

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      Okay. This is all new to me. The guy that rebuilt my transmission put that on. At first I thought I may need to have the DS cut. I think I may have enough room with that seal, I didn’t realize there was room between that seal and the rear of the transmission. Thanks!
       
    • Car Nut

      Car Nut Mopar Master

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    • BUCKEYE FAN

      BUCKEYE FAN Well-Known Member

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      Thanks
       
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