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Which is stronger 14bolt f/f or a Dana 80?

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by 82Jimmy, Oct 4, 2000.

  1. 82Jimmy

    82Jimmy 1/2 ton status

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    I asked the question in chat the other night and I got 2 different answers...do they make lockers or rebuild kits for dana 80's?


    10 out of 11 people prefer Jimmys over Blazers.
     
  2. Emmettology 101

    Emmettology 101 3/4 ton status

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    the Dana 80 is. The 14FF is comparable to the Dana 70..

    Mike [​IMG]
    See <font color=green>EMMETT</font color=green> -&gt; http://emmett.coloradok5.com
     
  3. realsquash

    realsquash 1/2 ton status

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  4. 82Jimmy

    82Jimmy 1/2 ton status

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    i can get one, but it needs to be rebuilt.....and will it bolt right up?


    10 out of 11 people prefer Jimmys over Blazers.
     
  5. tRustyK5

    tRustyK5 Big meanie Staff Member Super Moderator GMOTM Winner Author

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    I think when you consider price, availability, ease of swapabilty (sp?real word?) and strength you can't beat the 14. I've never even seen a Dana 80, whereas every second yard has a 14 bolt lying around.

    Just my usual biased opinion [​IMG]
    Rene

    [​IMG]
     
  6. TX Mudder

    TX Mudder 1/2 ton status

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    The dana80 is stronger, hands down.
    The 14B is just as good of an axle. If you need more strength, just go for a Rockwell 2 1/2 ton.
    I have a friend that has a d80 front AND d80 rear. Came off a Dodge truck, he put them on his F350.
    With a big-ass Powerstroke and 44's, he managed to mangle a few driveshafts and his tcase once, but nothing to the axles.
    The axletubes are HUGE. About the only thing bigger (that I've seen in person) is a Dana135 rear.
    Kind of makes me feel sorry for my wimpy 3/4 ton front axle.

    -- Mike
     
  7. 90K5

    90K5 1/2 ton status

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    I've seen one and that thing is huge!! Its got an 11" ring gear. I'd still go for the 14 bolt FF because of parts availability

    90K5
     
  8. MudFrog

    MudFrog 1/2 ton status

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    Why even bother with a dana80? I can't think of one single thing that a 14 bolt can't handle. Not to mention the price difference.

    89 K5 Silverado
    http://mudfrog.coloradok5.com
     
  9. Boss

    Boss 1/2 ton status Author

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    Man, you must be trying to do some SERIOUS wheelin that you would want a D80. I read in this months Petersons Offroad, that they said a D80 is the strongest, then D70, then Ford 10.25, then Corp. 14. But 14 is the best overall, b/c of availability. Goodluck
    Boss
    http://www.boss.coloradok5.com

    [​IMG]
     
  10. realsquash

    realsquash 1/2 ton status

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  11. Brians 60s

    Brians 60s 1/2 ton status

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    A dana 80 is definately the beef. it sports over an 11 inch
    ring and hugh axle tubes. the downfall is the price. once you get one a detroit locker runs from 550 to 625 bones. ring and pinions cost an insane 400 to 700 bones plus an install kit is another 200. I have been thinking of getting
    an 80 but after finding all this out I will probably stick with the corporate 14 bolt. If you do go with an 80 get
    the one with 37 spline axle shafts.

    TOO MUCH IS JUST BARELY ENOUGH!!!
     
  12. Casey 86K5

    Casey 86K5 1/2 ton status

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  13. chevy4x4

    chevy4x4 1/2 ton status

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    This is what 4wheel &off road said
    Strongest to weakest
    Dana 80
    Dana 70
    Ford 10.25
    ff 14 bolt
    dana60
    sf 14bolt
    ford 9"
    dana 44
    ford 8.8"
    12 bolt
    10bolt


    [​IMG]
    [​IMG]K5[​IMG]
     
  14. 6.2Blazer

    6.2Blazer 1/2 ton status

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    I assume you are talking about the Dana 80's found in the Dodge pickups. These are actually a hybrid cross between an 80 and a 70 that was developed so it would live behind the Cummins and V-10. The center section (carrier and ring and pinion) are from an 80 while everything out from there are basically 70 components.

    I'm pretty sure you would have to at least move the spring and shock mounts to fit it under a Chevy, and also, as already mentioned, parts will be more expensive and harder to find than a f.f. 14 bolt.
     
  15. Brians 60s

    Brians 60s 1/2 ton status

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    Single wheel dana 80s came out in 94 or 95 under some 3/4 ton but mostly one ton 2 and 4 wheel drive dodge trucks. They may have been single wheel 80s in other vehicles but
    I am not aware of any.

    TOO MUCH IS JUST BARELY ENOUGH!!!
     
  16. 90K5

    90K5 1/2 ton status

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    Wow 4Wheel and Offroad thinks a Dana 44 is stronger than a 12 bolt? I would have to disagree. I always thought a 44 was about equal to a 10 bolt. I've also heard people say that a 12 bolt is only a little stronger than a 10 bolt, but I haven't heard too many bad things about 12 bolts.

    90K5
     
  17. TX Mudder

    TX Mudder 1/2 ton status

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    WHy is a Ford Sterling 10.25 axle stronger than a 14b's 10.5"?
    Anyone?
     
  18. chevy4x4

    chevy4x4 1/2 ton status

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    4wheel&off road said that it has stronger axleshafts [1.50 inch, 35 splines(ford) compared to 1.50 inch, 30 splines (14 bolt)] Its said its stronger, but not much.


    [​IMG]
    [​IMG]K5[​IMG]
     
  19. 6.2Blazer

    6.2Blazer 1/2 ton status

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    I may be wrong, but I believe the 80 was pretty standard behind the Cummins engines, whether it was a 3/4 or 1 ton.
     
  20. tRustyK5

    tRustyK5 Big meanie Staff Member Super Moderator GMOTM Winner Author

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    Actually the 14 bolt axles are 1.56" not 1.50". Personally I would have to dis-agree that the Sterling is stronger, and I'd like to see some destructive testing to prove thier claim.

    Rene

    [​IMG]
     

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