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Dana 60 rear axle???

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by CaptCrunch, Feb 5, 2001.

  1. CaptCrunch

    CaptCrunch 1/2 ton status

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    I found a Dana 60 REAR axle that is supposably out of a mid 70's 3/4 ton. Never knew they were in GM's in the rear. I know the one in my buddy's Dodge is stout. But I'm wondering if anyone is familiar with these. Should bolt right in to my 87 Blazer? What about u-jt's? Driveshaft angle? Any help would be great! Also are all 8 lug axles wheels 16"? Can't find any 15" wheels w/ 8 lugs. Thanks everyone

    1987 Chevy K5 Blazer- 350 TBI
     
  2. Burt4x4

    Burt4x4 3/4 ton status

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    Well I can not answer all your questions but I have a 6lug Dana60 in the rear of my K5! It too came out of a mid 70s 3/4ton long bed 4x4 P/U. Duno if they were only out for a short while or what?? Mine works great!
    Later

    72K5[​IMG]Led Zeppelin[​IMG]Rock ON![​IMG]
    <A target="_blank" HREF=http://www.burt4x4.coloradok5.com>http://www.burt4x4.coloradok5.com</A>
     
  3. ken

    ken 1/2 ton status

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    Dana 60 rears were used in 3/4 ton GM trucks prior to 1973 (19972 and back). All 3/4 ton rears 1973 and up were 14 bolters. The specs on a 60 are: 9.75" ring gear (compared to 10.5" for 14 bolt), and 1 5/16" shafts (compared to 1.5" shafts for the 14 bolt). The 14 bolt is tougher.

    ken
     
  4. Burt4x4

    Burt4x4 3/4 ton status

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    FYI....
    Just like all axels the aftermarket can help make the rear Dana60 that much stronger! The axels I have are 35 spline 1.5 made by Mark Williams.

    72K5[​IMG]Led Zeppelin[​IMG]Rock ON![​IMG]
    <A target="_blank" HREF=http://www.burt4x4.coloradok5.com>http://www.burt4x4.coloradok5.com</A>
     
  5. CaptCrunch

    CaptCrunch 1/2 ton status

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    72 and back huh? So does this mean it will bolt in or am I gonna have problems. I can't say I've ever seen the setup under a 72 back GM pickup, not many left up here in the land of salt.

    1987 Chevy K5 Blazer- 350 TBI
     
  6. CaptCrunch

    CaptCrunch 1/2 ton status

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    Well checked out your page, nice rig by the way, but those beach shots are killing me. Won't have weather like that for a while here in MN. Hard to tell from the pics but the setup looks the same. Also is a 72 and earlier front axle the same or a bolt in for a 73-87 setup? Also looks like you have 6 lug axles and wheels? If so, I assume those are the Mark Williams axles... how much did they set you back? Thanks alot.

    1987 Chevy K5 Blazer- 350 TBI
     
  7. Burt4x4

    Burt4x4 3/4 ton status

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    Yes it bolted right up and the spring packs I'm using in the back are listed for 73 and up. So I would say as long as your center pin for the spring perches are the same you sould be fine. Yes thoes are MarkWilliams 6 lug 35 spline axels.
    If you need more let me know....

    72K5[​IMG]Led Zeppelin[​IMG]Rock ON![​IMG]
    <A target="_blank" HREF=http://www.burt4x4.coloradok5.com>http://www.burt4x4.coloradok5.com</A>
     
  8. 6.2Blazer

    6.2Blazer 1/2 ton status

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    Is it a full-floater or semi-floater......the full-floater will have a large hub with bolts around it sticking out through the middle of the wheels. I think the one Burt 4x4 has is a semi-floater (please correct me if I'm wrong). While possible, I think it's much harder to try to convert a full-floater axle to 6 lugs. In regards to 8-lug, 15" wheels, there are several companies that make these but most are only available in steel versions. Eaton (advertised in National tire and wheels) and American Racing both make them, along with other companies.
    Most stock full-floater 60's came with 30-spline axles that are not quite as strong as the 14 bolt ff axles, and I know a guy who has broken a couple of axle shafts...though he did have to try pretty hard to do so.
     
  9. ken

    ken 1/2 ton status

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    And...to make things even better, the Dana 60 under my Jeep CJ8 has 1 3/4" x 40 spline semi-float shafts!!!! Made by Dutchman. Talk about unbreakable!!!!

    ken
     
  10. CaptCrunch

    CaptCrunch 1/2 ton status

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    Yes I'm very interested in the details of your swap Burt. Email me all the info at Milnerlives@juno.com

    1987 Chevy K5 Blazer- 350 TBI
     
  11. CaptCrunch

    CaptCrunch 1/2 ton status

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    I believe it is a semi floater, but not sure. I'm calling him tonight because my rear end puked on the way to class this morning...DOH! So had one of the guys at the shop tow it in and hopefully will have time to double check that it is the axle tonight. I'm also gonna call National WT today as well to see. I just would rather have 15" wheels.... 16" wheels will cost me about an extra $250 with no real benifit.

    1987 Chevy K5 Blazer- 350 TBI
     
  12. Burt4x4

    Burt4x4 3/4 ton status

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    Yes correctOmundo! I have the semi-float D60/6lug MarkWilliam axels.

    I can take pics and measurements for ya, just tell me what spacific info it is that you need from me. I think the best bet would be to measure up what you have now and compre it with what the D60 your looking at has.SPring perch postion and angle will be your best starting point. The D60 came in many forms shapes and sizes..............

    72K5[​IMG]Led Zeppelin[​IMG]Rock ON![​IMG]
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  13. CaptCrunch

    CaptCrunch 1/2 ton status

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    I'm probably going to take your advice and measure up everything. What u-jt are you using and then were the MW axles a direct fit? How much were they?thanks

    1987 Chevy K5 Blazer- 350 TBI
     
  14. Blazer1970

    Blazer1970 1/2 ton status

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    Steve Burt's Blazer is a 1st gen. and the D60 rear ends were used in '67 - '72 trucks (mostly '71 and '72, I think). The spring spacing on these trucks is narrower than on your '87, so the perches would have to be moved to use that axle in the '73 -&gt; body style truck, I think. Not sure about shock mounts, but I think they are the same.

    Tim

    70 Blazer CST 4X4 350 SM465 NP205
    87 Burb 4X4 350
    01 GMC 2500HD 4X4 Duramax/Allison
     
  15. 6.2Blazer

    6.2Blazer 1/2 ton status

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    In order to use 35-spline axleshafts, you must have a 35-spline carrier (diff). I think quite a few of the Dana 60's were only 30-spline from the factory, but there were 35-spline available stock also.
     

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