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QUICK fellas... D60 vs. 14BFF rear axle

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by KRAZIE87K5, Jun 1, 2001.

  1. KRAZIE87K5

    KRAZIE87K5 1/2 ton status

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    Please! I need to know which one to stay with! I am trying to negotiate a trade, and I want to make sure that trading the 14BFF for a D60 rear is a good call... Thanks again guys and gals!

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  2. newyorkin

    newyorkin 1 ton status

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    I may be wrong, but I thought a D60 was primarily a front axle? I always figured if you had a 14bolt rear, you used a d60 up front.

    Ratch
    **<A target="_blank" HREF=http://k5.8m.com>http://k5.8m.com</A> What more is there to life?**
     
  3. HarryH3

    HarryH3 1 ton status Author

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    The 60 rear is weaker than the 14-bolt, but you'll get better clearance under the diff. The 60 is also quite a bit lighter.

    <font color=black>HarryH3 - '75 K5</font color=black>
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  4. Cliffy

    Cliffy Registered Member

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    I'd stick with the 14FF. I know the D60 has better ground clearance, but I've seen too many people sucessfully shave the FF-ing pig and not have any problems. STICK WITH THE FF-14bolt.

    Besides detroit lockers are cheaper for 14 bolts.

    Coil sprung 71 blazer.
     
  5. Emmettology 101

    Emmettology 101 3/4 ton status

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    I second what Harry said! I believe there are more locker and gear choices for the D60 though, but the lockers for the 60 are more expensive.

    <font color=green>MIKE</font color=green> - "Hukd on fawnics,werkd fer me!"
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  6. Cliffy

    Cliffy Registered Member

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    The rear D60 is a popular rear axle choice for wheelers with Jeeps and Scouts (and other smaller vehicles) since they often don't need the brute strength of the 14 bolt. (I like the security of knowing I'll NEVER break an axle shaft in my big ass rig)

    They can be often be found in Dodges and fords and occassionally a chevy.

    Coil sprung 71 blazer.
     
  7. KRAZIE87K5

    KRAZIE87K5 1/2 ton status

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    So damn... OK I keep the 14BFF... but then where can I get a 4.10 gear for the d@mn thing?

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  8. KRAZIE87K5

    KRAZIE87K5 1/2 ton status

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    I also am powering my truck with a strong modified 454... ~500HP

    I just don't know how long it will take to convince the wife to let me buy the new ring and pinion set for the 14BFF!

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  9. HarryH3

    HarryH3 1 ton status Author

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    Check out <A target="_blank" HREF=http://www.reiderracing.com>http://www.reiderracing.com</A>. Great prices and great service!

    <font color=black>HarryH3 - '75 K5</font color=black>
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  10. 6.2Blazer

    6.2Blazer 1/2 ton status

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    The 14-bolt FF definitely has a strength advantage over the Dana 60, but that doesn't mean the 60 is weak by any means at all. A guy in our club has been running a FF Dana 60 rear with a Detroit in a hybrid Toyota truck with a small block and 36" tires for a while now with no problems.

    The 60 has the advantage of lighter weight and better clearance, the downside is that modifcations are needed to fit it under your Blazer (spring pads and shock mounts moved, etc..).
    The advantage of the 14-bolt are price (plus Detroits are "only" around $300 vs. $500+ for most other applications), they are easy to work on, and are very easy to find parts for in a junkyard. On that note, you could probably find a set of 4.10 gears out of a junkyard axle relatively easy.
     
  11. KRAZIE87K5

    KRAZIE87K5 1/2 ton status

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    ok... I have an open 8-lug 10-bolt in front now. Do I have to worry about it if I am going to be lead-footed with 35x12.5" tires?

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  12. Waxer

    Waxer 1/2 ton status Author

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    With the motor you specified and the gearing/tires I'd look at upgrading the front axle to a D60. If you had a 350cid then you'd be fine with the 10 bolt IMHO.

    Crawlin the rocks with my K5
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  13. Burt4x4

    Burt4x4 3/4 ton status

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    I have a Dana60SF rear and so far it has been one helluv a rear axel. Never owned a 14FF so can't really give you a acurate comparison. I think eather one has more than enough strength to hold up under our rigs so ......

    72K5[​IMG]Led Zeppelin[​IMG]Rock ON![​IMG]
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  14. 6.2Blazer

    6.2Blazer 1/2 ton status

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    In my opinion, driving with a "lead-foot" on the trails with 35" tires will at some time cause a failure of the front 10-bolt.....but a lot of it depends on what type of terrain you run on. Running straight through mud holes usually isn't too hard on stuff, but crawling around on rocks and deep ruts can cause problems. I've broken my front 10-bolt (front axle shaft u-joints) a couple of times, and both times at less than 1/2 throttle.
     

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