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10 or 12 bolts?

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by JORGE, Mar 20, 2001.

  1. JORGE

    JORGE 1/2 ton status

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    If the differential has 12 bolts,wath does it mean?is a 4,56 gear?Thanks
     
  2. Whassup

    Whassup 1/2 ton status

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    The 10 bolt is the light duty differential, not worth much in the land of 35" and up tires. The 12 bolt is heavier than the 10 and works well with up to 38.5" tires (if your not doing some hardcore offroad driving). being 10 or 12 bolt has nothing to do with the gearing ratio. There are many different gear ratios that can be used in 10, 12, 14 bolt differentials. The main difference is the strength of the carrier, the diameter of the the ring gear, axle diameter, spline count, and whether it is 6 or 8 lug.

    I like my trucks BIG, my women HOT, and my Budweiser COLD!
     
  3. 90K5

    90K5 1/2 ton status

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    12 bolts are stronger, but either one can have 2.73, 3.08, 3.42 or 3.73 from the factory. 5 lug is 4x2, 6 lug is 4x4

    90K5

    See my truck at <A target="_blank" HREF=http://albums.photopoint.com/j/Albumindex?u=1329584&a=9886502>http://albums.photopoint.com/j/Albumindex?u=1329584&a=9886502</A>
     
  4. JORGE

    JORGE 1/2 ton status

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    So,if the diff has 10 bolts can be a 3.8 or 4.56gear ,and if is a 12 bolts the maximun gear ratio is 3.73.Is correct?Thanks.
     
  5. 90K5

    90K5 1/2 ton status

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    The factory ratios are the ones I mentioned before, but others can be swapped in. I don't think 4.56s were ever offered though.

    90K5

    See my truck at <A target="_blank" HREF=http://albums.photopoint.com/j/Albumindex?u=1329584&a=9886502>http://albums.photopoint.com/j/Albumindex?u=1329584&a=9886502</A>
     

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