Thread: Coprate 10 bolt 8.5 inch

  1. #1

    Default Coprate 10 bolt 8.5 inch

    How bad is the gm 10 bolt 8.5 inch off road?

  2. #2
    Join Date
    Jan 2007
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    AVL, NC
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    If you're running larger than 35's, it will fail at some point.
    Chris Steuber
    02 E350 7.3 V4
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  3. #3
    Join Date
    Jan 2011
    Location
    Richmond, Virginia
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    I've seen them hold up to large tires, big horsepower and tons of abuse in mud, and fail with stock tires on the street. Keep a spare axle shaft if you're really worried. If you wind up using the spare, then you should probably upgrade.
    "The Woodchuck"
    1989 Ford F350, 7.3/ZF5, 3.55's, LS rear, 255/85r16 Dunlop Mud Rovers

  4. #4
    Join Date
    Oct 2011
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    Atascadero, CA
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    +1. It's all about how you drive, with a little bit of luck mixed in. You should definitely carry a spare axle shaft and familiarize yourself with installing it though. Then if you have problems you can get a 14 bolt rear.

  5. #5
    Join Date
    Nov 2008
    Location
    Northern Nevada U.S.A.
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    18
    Quote Originally Posted by Saiyan66 View Post
    +1. It's all about how you drive, with a little bit of luck mixed in. You should definitely carry a spare axle shaft and familiarize yourself with installing it though. Then if you have problems you can get a 14 bolt rear.
    If you are using it as is, and not spending any money on it, then run it till it breaks. If you are planning on spending money on it, then don't. Save up and get a 9.5 6 lug axle and be done with it, unless you are planning on a heavy foot and bigger than 36 or 37" tires. The 9.5 is easily twice as strong in stock form and has a good reputation for holding up to anything a sane driver will put them through as long as it's maintained and not intentionally destroyed.

  6. #6
    Join Date
    Dec 2009
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    Rifle, Colorado, United States
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    745
    it depends on how much traction you have. if you are in a high traction situation i.e. rocks, try avoid letting it get bound up or using lots of throttle. the problem with some posi lockers is the traction can be unpredictable. and catch at the wrong time.

    when preparing for overland travel it is best to be prepared for any situation. to be able to use the throttle when necessary.



    in your situation with the c1500. i would weld the rear spider gears for cheap traction. put on some 33's or 35's on aluminum rims. a welded rear end will handle a little different on the street and in the snow. but it is very predictable. tire scrub won't be as bad in a truck as in an suv, as long as you don't load up real heavy you shouldn't have any problems breaking axles on the street.

    just my opinion. this worked very well in a '74 1/2t i had with 36" swampers.
    2000 ford excursion 33" cooper st maxx, diesel
    1994 ford explorer cooper stt's winch bumper, 8274
    1994 ford f350 crewcab powerstroke and five speed on 37's with superduty rsk and resevoir shocks
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  7. #7
    Join Date
    Jun 2008
    Location
    Northern Utah
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    1,044
    A friend exploded one (busted/cracked the differential) driving around a corner in a Carls Jr. drive through with 33's and a Detroit Tru-trac. No real signs of wear up till that point. I don't like 10 bolts especially when 14 bolts are cheap lol.
    91- F350 CC - 7.3-IDI IH diesel - ATS Turbocharger - ZF 5speed - 1981 Four Wheel Camper
    98- Toyota UZJ100 Land Cruiser - triple locked
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    My Gypsy wagon buildup: http://expeditionportal.com/forum/sh...ad.php?t=38047

  8. #8
    Join Date
    Nov 2010
    Location
    southern ga
    Posts
    143
    Broke one in a 97 tahoe, the case it self cracked and the chunk came out in peices, broke my driveshaft, tcase, and twisted the input shaft of my trans.
    I avoid at all costs

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