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Dana 60 spring perches

Discussion in 'The Garage' started by dammit32, Mar 6, 2003.

  1. dammit32

    dammit32 1/2 ton status

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    It seems my 1 ton stuff is about an inch different than my 3/4 ton axles...which didnt bother me..I'll just grind off the perches and move them. But after looking at the Dana 60 it seems one of the spring perches is machined into the gear housing !!!
    So what are my options? add an inch worth of steel to the side of the perch?
    It looks like the shock mounts will work ..brake lines look ok... driveshaft looks like it will bolt up
     
  2. yunit

    yunit 1/2 ton status

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    All of the solid front axles GM put out had the same spring perch setup. It sounds like the D60 you have is a Dodge.
     
  3. dammit32

    dammit32 1/2 ton status

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    nope the one tons are 1" different...Its definatley a Chevy CUCV axle
     
  4. Swanson52

    Swanson52 1/2 ton status

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    One ton fronts are the same as 1/2, 3/4, K5, and Subs. The only differences between any of them is the actual WMS to WMS. GM never moved the springs on 73-91's.
     
  5. milspecjimmy

    milspecjimmy 1/2 ton status

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    yeah
    exactly they are all the same on 1/2 3/4 k-5's and subs, im pretty sure that the one tons were wider at the spring perches, and i also know he got them from a chevy
     
  6. Swanson52

    Swanson52 1/2 ton status

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    Well, 2 things to contend this.
    1.) My truck is a 78 body mounted on an 85 M1008 frame. The axle in the front is a 3/4 ton dana 44 (previous owner swapped out the 60). The front fits perfectly with no spring pad issues whatsoever.

    2.) Check out this article. It put the spring pad spacing on a GM 60 at ~32", which is the same as the GM 44 and 10B.
     
  7. Swanson52

    Swanson52 1/2 ton status

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    Here is a post on PBB with pics of someone measuring a GM 60 @ 32".
     
  8. dammit32

    dammit32 1/2 ton status

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    this is why I'm a member here....you guys are great /forums/images/graemlins/smile.gif
     
  9. dammit32

    dammit32 1/2 ton status

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    I will measure in the daylight tomorow:)
     
  10. milspecjimmy

    milspecjimmy 1/2 ton status

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    i stand (well sit at the computer) corrected
     
  11. Swanson52

    Swanson52 1/2 ton status

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    Have you swung the 60 underneath the springs to check, or does it just LOOK off by eyeballing it? One thing that can make it deceptive in appearance is the significantly larger pumpkin of the 60. Of course, if I KNEW anything, my 60 would be in instead of on jackstands. /forums/images/graemlins/wink.gif /forums/images/graemlins/thumb.gif
     
  12. BadDog

    BadDog SOL Staff Member Super Moderator Author

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    FWIW, I'll also back up that they are all the same on the GM front axle spring width. The rear spring width is different for 1 tons, not the front. If your D60 is not the same as the axle that came out, it's a Dodge axle. Maybe it was swapped into whatever you got it out of by someone else? As for options, several people here are running Dodge D60 fronts by simply forcing the springs to line up. Apparently they have no problems associated with the bind.
     
  13. Swanson52

    Swanson52 1/2 ton status

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    [ QUOTE ]
    As for options, several people here are running Dodge D60 fronts by simply forcing the springs to line up.

    [/ QUOTE ]

    Hijack;
    To address that issue, A-Tron has machined me a set of spring bushings to move the springs outward .25" on each side. /forums/images/graemlins/thumb.gif Writeup to come.
     
  14. BadDog

    BadDog SOL Staff Member Super Moderator Author

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    Cool. But how is that going to work out with the plates and u-bolt/stud locating on the passenger side?

    [Edit] Never mind, you said 0.25", there is enough room for that since after market springs are 2.5" instead of the factory 3"...
     
  15. dammit32

    dammit32 1/2 ton status

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    ok after remeasuring in the light it appears the perch centers of the D60 are 32" and my springs look 31.5"...we'll call it close enough....

    the 14 bolt ff measured 40.5 to the perch centers and my springs were hard to measure but appeared to be 42" so they will each have to move in 3/4"

    the write up I read said the axle tubes were 3 1/8 for the D60....I have a set of 3" u-bolts from an earlier project that would probably work....this is getting to be an inexpensive project /forums/images/graemlins/smile.gif
     
  16. Swanson52

    Swanson52 1/2 ton status

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    [ QUOTE ]
    this is getting to be an inexpensive project

    [/ QUOTE ]

    I feel your pain. My cheap 60 rebuild ended up putting me out over $500. And I got some smokin deals. /forums/images/graemlins/tongue.gif
     
  17. tRustyK5

    tRustyK5 Big meanie Staff Member Super Moderator GMOTM Winner Author

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    [ QUOTE ]
    said the axle tubes were 3 1/8 for the D60....I have a set of 3" u-bolts from an earlier project that would probably work....

    [/ QUOTE ]

    What are ya gonna use on the passenger side?

    rene
     
  18. dammit32

    dammit32 1/2 ton status

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    ah yes the passenger side....that requires a 4" u bolt and 2-5/8" bolts?
     

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