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Upgrading everything

Discussion in 'Wrangler TJ Builds (1996-2006)' started by Zacho13, Nov 28, 2017.

  1. Nov 28, 2017 at 7:39 AM

    Zacho13 [OP] Member

    Feb 15, 2017
    First Name:
    Freehold New Jersey
    1997 Green Wrangler Sport
    4 inch lift 50" Lightbar 2 lightbar pods 8500 lbs winch on aftermarket bumper 33" all terrain wheels
    so I am currently running 31” wheels on Dana 33 axels with a stock gear ratio and a 4” lift. I want to run 37s or 40s and I need to upgrade my axels and gearing and I don’t know what else I need to do or have what parts do I need and what do I actually need to do to really upgrade everything
  2. Nov 28, 2017 at 8:13 AM

    Prerunner1982 Well-Known Member

    Aug 4, 2017
    First Name:
    93 XJ 2 door
    You more likely have Dana 30 front axle and a Dana 35 rear axle.

    The Dana 30 could live with 35"s, and with a super30 or chromoly axle shafts it could likely handle 37"s and maybe 40"s though that may be pushing it.
    The Dana 35 rear, though there are upgrade kits available it is often referred to as polishing a turd. If you could find a Dana 44 that you could upgrade it should be able to handle 37"s.

    But price all that out and compare to a set of 1 ton axles, see which one is more cost effective for you.
    Last edited: Nov 28, 2017
    aggrex likes this.
  3. Nov 28, 2017 at 8:19 AM

    OFFGRID Well-Known Member

    Oct 3, 2016
    First Name:
    1979 Jeep CJ7, 258, TH350, NP208
    Howell fuel injection, header, HEI distributor, TH350, NP208, SOA lift with YJ springs in the front & GW springs in the Rear. AMC20 with G2 1 piece chromos trussed, Dana 30 with G2 chromos and 760x ujoints and MM Stainless Hubs, Geared 4.56. Tom Woods shafts, Metal cloaks, Caged, 37" Toyo MTs.
    If you run a Highline/overline fenders like poison spyder's or my favorite metalcloaks you can run 38s with your current 4 in lift. Do you have a Dana 35 or 44 in the back? You most likely have a Dana 30 up front. My buddy has an LJ with Dana 44 in the back and Dana 30 up front, 4in lift and 37x12.50x15s on his and he does very well offroad. It is really how much do you want to spend. You can beef that Dana 35 up, but I bet you could find a used Dana 44 out of a TJ/LJ for not much more. The dana 30 is pretty stout up front, and you could build it up as well. I bet you could find a TJ/LJ Rubicon front Dana 44 for $800+\-. Here is a picture of my buddy's LJ with Dana 44 back and Dana 30 front with RCV axle shafts (best on the market) 37s on a 4in lift. He does rub a little under full flex as he sits.

    JKBob 25 and aggrex like this.

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