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Question on 14bolt rears

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by Monster, Aug 23, 2003.

  1. Monster

    Monster Registered Member

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    Is there a big difference in strength between a 14 bolt full floating rear or the 14 bolt semi floating rear.
     
  2. Michk5

    Michk5 1/2 ton status

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    Well first off the ring gear is 10.5 on the FF and only 9.5 on the SF. I can't imagine a reason to run the SF when the FF are a dime a dozen. Just my .02--Matt
     
  3. Shaggy

    Shaggy 3/4 ton status

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    <font color="green"> There's a big difference, not only in the size of the ring gear but just due to the nature of a semifloating vs a full floating axle. On a SF the axleshaft transfers power to the wheel and also supports the weight of the truck via a small roller bearing between the shaft and the axle housing. On a FF the weight of the truck is supported by a hub and spindle assembly just like on a front axle, so all the axleshaft has to do is transfer power to the wheels. More parts, but the FF is a much stronger axle because of it. </font>
     
  4. Confedneck

    Confedneck 3/4 ton status

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    also, if you break an axle shaft with a ff you can keep driving and the axle will stay in, as where with a cclip axle it will not..
     
  5. Shaggy

    Shaggy 3/4 ton status

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    [ QUOTE ]
    also, if you break an axle shaft with a ff you can keep driving and the axle will stay in, as where with a cclip axle it will not..

    [/ QUOTE ]

    <font color="green"> Which is just a nice side effect of the FF design, and really has nothing to do with strength. /forums/images/graemlins/wink.gif /forums/images/graemlins/tongue.gif</font>
     
  6. K5MONSTERCHEV

    K5MONSTERCHEV 1/2 ton status

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    arent axles bigger too!
     
  7. 84_Chevy_K10

    84_Chevy_K10 Banned

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    Possibly, but less spline count. I am not sure of the size of the axle shafts on the SF 14, but they're 33 spline vs. 30. Either way, the design makes the 14 FF much stronger.
     
  8. K5MONSTERCHEV

    K5MONSTERCHEV 1/2 ton status

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    My ff has 33 spline shafts.
     

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