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9.5 or 10.5 ring gear in 14bff?

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by nau81blazer, Jul 31, 2004.

  1. nau81blazer

    nau81blazer 1/2 ton status

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    Thanks for all of the input on my other post guys, i aprecciate it!! /forums/images/graemlins/thumb.gif

    How do you find out if your 14bff has a 9.5 or 10.5 ring gear?

    Is there a difference in strength or locker choices?

    Thanks again guys,
    Adam /forums/images/graemlins/k5.gif
     
  2. SF87K5

    SF87K5 1/2 ton status

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    If I am not mistaken all 14 Bolt FF are 10.5" ring gear. The 14 Bolt SF is a 9.5" ring gear, hope that helps you out.
     
  3. big83chevy4x4

    big83chevy4x4 3/4 ton status

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    what he said, the 14bsf is 9.5" and teh ff is 10.5". as for strength, never seen anyone break a sf so they must be preaty strong. i would go with a ff though. *IF* you do break a sf axle, it will come out on you just like a 10b or 12b.

    the locker for a ff is cheaper (detroit) by alot over a sf.
     
  4. R72K5

    R72K5 Banned

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    central IL
    i have seen 9.5" death

    bearings give and pinions twist, gears jam up and chew up

    and that was just in a street lifted daily driver with a normal 350 and stock driveline


    i dont trust any 9.5, i always rmeove for a 10.5 to go under

    9.5" is a semi flaoter just like the 8.875 and 8.5 are,

    what is flagstaff like ? i have an interest in arizona for an unknown reason, like ot hop ei get ot live there someday



    good luck
     

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