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1/2 ton vs 3/4 ton axles

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Old Oct 25, 2012 | 02:09 PM
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From: palmer alaska
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Default 1/2 ton vs 3/4 ton axles

I am new to the forum and I am currently modifying my jeep for off road use and rock crawling what would be a better axle to use. All suggestions would be greatly appreciated
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Old Oct 25, 2012 | 02:19 PM
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Technically its just the GVWR of that vehicle the axle was under. It's a kinda old school rating system that doesn't really make sense anymore.

If you wanted examples:
1/2 ton would be a 44/9 out of a F150
3/4 ton would be a 44/60 out of a F250
1 ton would be a 60/10.25 out of a F350

However there are many different combos. Most will call "1 ton rears" any rear axle that is full float.. D60, D70, 10.25, 14 bolt etc. So technically a F250, a 3/4 ton truck, has a full float, "1 ton" dana 60 rear. But it only has a dana 44 front, making it "3/4 ton." But the tubes on the F250 D60 are much smaller than the tubes in a D70 or 14b.

It all depends on tire size, power and gearing, terrain, and the way you drive when choosing an axle for your XJ.

Last edited by 93XJLI; Oct 25, 2012 at 02:21 PM.
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Old Oct 25, 2012 | 03:30 PM
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^x2
To fully answer this question more information is needed. What size tires are you going to run is probably the most important question, 33s or less, the D/30 front with a C/8.25 will be fine, if on the other hand your going with 35-37s a D/44 and 8.8 or 9 would be what I would recommend, 38s and up I would go with one ton axles.
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Old Oct 26, 2012 | 03:22 PM
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I am going to be running 35s and the terrain is trail with a lot of tree roots to go over. Its my first jeep so I am trying to get as much information i can. Thank you
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Old Oct 27, 2012 | 12:51 AM
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If it was me i would do the explorer 8.8 while your welding on the new mounting tabs fully weld in the axle tubes to the diff housing.And get a super 88 kit that removes the c clips making it stronger off road.The front is up to you some say keep the stock one some say you need a dana 44 or bigger.
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Old Oct 27, 2012 | 01:51 AM
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I actually like the idea of the explorer 8.8 since the axles are the same width as my cherokee now. I am going to be building this spring tho since alaska is already freezing.
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Old Oct 27, 2012 | 01:27 PM
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Also would it be a good idea to do a full floating rear end?
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Old Oct 27, 2012 | 01:30 PM
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Originally Posted by brucemardenjr
Also would it be a good idea to do a full floating rear end?
sure.

full floaters are generally more heavy duty and its definitely a stronger design. The weight of the vehicle is on the housing, and not the shafts themselves.
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Old Oct 27, 2012 | 04:16 PM
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I have way to many questions. If I use the explorer 8.8 will I have to use the explorer transfer case and transmission?
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Old Oct 27, 2012 | 04:41 PM
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Originally Posted by brucemardenjr
I have way to many questions. If I use the explorer 8.8 will I have to use the explorer transfer case and transmission?
No.... You need to start searching and reading more builds.
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Old Oct 27, 2012 | 05:03 PM
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Im currently doing that.
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Old Oct 27, 2012 | 06:41 PM
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All you need with the 8.8 is new perches and shock mounts and wheel spacers since it's a bit narrower. What axles do you have now? D44 was an option in 88 models.
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Old Oct 27, 2012 | 09:08 PM
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It currently has the 30 dd in the front and 35 dd in the rear and ive been doing a lot of research and it seems those axles wont take to much of a beating. I also am going to go with 33 in tires. My buddy has some and they look really nice.
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Old Oct 27, 2012 | 11:29 PM
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33s is pushing the 35 but a 30 should be OK. Easiest and cheapest swap would be a 8.25 out of a 97 and newer XJ. Bolts right in and can be had with the same gear ratio. Get the matching front 30 with the bigger u joints and you're good even with 35s.
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Old Oct 28, 2012 | 01:29 AM
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Ive been looking on craigslist in my area and nothing right now for a newer xj all ive been finding was the d44 set up but since its winter maybe there will be some dead vehicles that i can get the axles from
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