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D44 u-bolt confusion/concern

Discussion in 'The Garage' started by mrk5, Dec 16, 2005.

  1. mrk5

    mrk5 The Sticker Guy Moderator Vendor GMOTM Winner Author

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    I did some searching and now I'm more confused.

    Apparently older D44s have 2.75" diameter tubes, and the new D44s & 10b are 3". I'm swapping in an older D44 in place of the new version I have now (because of gear ratio).

    I have new u-bolts, but they are 3". I'm wondering if it will be okay with the 2.75" tubes.

    Or if I had 2.75" u-bolts made, would they work with my spring plates.

    I noticed Tuff Country lists the same front u-bolt kit for 69-87 1/2tons.

    Basically I'm wondering what opinions there are about using the 3" u-bolts on the 2.75" tubes.

    I would rather not have to get 2.75" u-bolts made now. Especially since I was planning to do the swap this weekend.

    EDIT: I am aware that one of the u-bolts will be 3.5" where it is next to the housing.:grin:
     
  2. Muddytazz

    Muddytazz 1 ton status

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    You are correct on the size difference, the tube size changed with the design change. Don't know about running the 3" on the 2.75 tube tho.
     
  3. 73k5blazer

    73k5blazer Unplug the matrix cable from the back of your head Premium Member

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    No. You need the 2.75" ubolts. Go find a medium duty or OTR truck parts store/dealer, they carry ubolts in stock in almost any size. It would be dangerous to use oversize u-bolts.
    I would think you'd need the proper top plates as well.
    Skyjacker listed the same thing when I bought my lift from them. When I called them to tell 'em the u-bolts were the wrong size they said "oh, you have one of those older rigs, we'll send you out the right u-bolts"
    Gee..thanks....how about asking that question WHEN I CALLED TO ORDER!
     
  4. divorced

    divorced 3/4 ton status

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    *Disclaimer: I am, by no means expressed or implied, suggesting any of the following information is safe.*

    Now, with that said, 1/4" difference in u-bolts is only a 1/8" difference on each side of the tube. I would run them if it were mine.
     
  5. mrk5

    mrk5 The Sticker Guy Moderator Vendor GMOTM Winner Author

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    That's what I was afraid of.:crazy:


    That's what I'm hoping is the consensus.:o

    Guess I'll see if I get any more opinions.
     
  6. marv_springer

    marv_springer 1/2 ton status

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    I wouldn't be afraid of doing it on a temporary basis to drive down to get the right ones.... but I wouldn't go wheelin' w/ it like that.

    Marv
     
  7. sweetk30

    sweetk30 professional hooker Premium Member

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    2 problems to see. 1 is might strech tighter but run out of threads to become tight. 2 is might keep getting loose and need to retighten 2-3 times. so with that said i almost lost a front axle one time at 60 mph from bad ubolts and it wasnt fun at all. if i was to have a problem with a axle i sure wouldnt want it with the front axle.
     
  8. mrk5

    mrk5 The Sticker Guy Moderator Vendor GMOTM Winner Author

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    Thanks for the input guys.

    I've decided I will have 2.75" u-bolts made, and I'm going to the JY first thing tomorrow morning to get the correct spring plates.

    I'm glad I at least figured this out before tomorrow morning when I already had the old axle out and was trying to bolt the new one in.

    Like sweetk30 said, I hate to have problems with the front axle.
     
  9. Chaddy

    Chaddy 1/2 ton status GMOTM Winner

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    I'd run 'em.....but thats me.
     

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