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Thread: U bolt changing Axles

  1. #1

    Question U bolt changing Axles

    Anyone,
    I have the ability to get new axles, Dana 60 front w/ 4.56 gears, and a GM 14 bolt (free floater), w/ 4.56 gears. The axles have about 8,000 miles and it is off a military 1984 GM gov't truck.

    Currently I have Dana 44 up front and GM 14 bolt both w/ 4.10/4.11 gears.
    The entire reason I am doing this swap is for the dana 60 up front for better stopping power, plan to go from the 35" tires to 39" tires shortly. Currently I have a 427 BB Chevy w/ a SM420 and stock T-Case. The swap is a no brainer, so I'm going to try and get it done this wknd.

    Questions.
    Do I really need to change the U-bolts? How bad is the impact on SAFETY?
    What about caster for the new axles? PITA or something simple?
    The front drive shaft switching from a dana 44 to a dana 60? Will the u-joint need replacing or is this a drive shaft switch to the T-case?
    Since front brakes are being replaced, does the master cylinder need to be switched along with the brake booster?

    Any other questions you guys may think of!

    I have the tires and rims switched for 16.5
    Steering components solved
    Shock mounts solved


    Thanks,
    DivingKaiser

  2. #2

    Default

    1. You need to change the ubolts, they are entirely different than the 44 takes
    2. Set your castor at 6 degrees, you will be fine.
    3. The front yoke on the govie 60 uses a 1310 series ujoint, just like the 44 front, although the shaft may have to be shortened about a inch.
    4. If you had brakes with the 44, chances you will have brakes with the 60 also, but upgrades never hurt.

  3. #3

    Default

    Yes, you will have to change Ubolts, the 60 is bigger than the 44 and the ones you have now won't fit.

    x2 on the caster angle.

  4. #4

    Default

    Thanks guys.

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