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  #1  
Old January 9th, 2019, 22:34
XJFAMFUN XJFAMFUN is offline
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Gear selection

I recently purchased a '93 Cherokee 4.0l that is sitting on 35s. Has Rustys 8 inch lift and long arm kit. It has the Dana 30 front and 8.25 rear axles. I am getting it geared, as it still has stock gears. The guy Im using recommended going with 4.56 gears for freeway/ daily driving/ trail/climbing. I was thinking more like 4.88s. Any suggestion or input fromanyone with actual experience wjth re geared set ups? Thanks.
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Old January 10th, 2019, 00:40
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lazyxj lazyxj is offline
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Re: Gear selection

With 33"s and 4.56, my XJs freeway RPMs are not excessive, with 35"s 4.88s would be suggested.
You might want to drop it a few inches too.
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Old January 10th, 2019, 08:11
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Re: Gear selection

Deeper is almost always better. 4.56 will put you closer to 'stock' than 4.88, but it does not compensate for the fact you went from spinning 150 pounds to spinning 400 pounds, and that does play a big factor.
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Old January 10th, 2019, 09:12
Rockwood Rockwood is offline
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Re: Gear selection

On the freeway, my XJ with 4.56s and 33s on steel beadlocks (got a deal, not really necessary for me since sub 15psi just means I just scrape the 8.25 everywhere) feels, er, sufficient power wise. In the hills, I wish I went 4.88. Only bummer about 4.88 on a D30 is you don't have much in the way of teeth on that pinion.
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Old January 10th, 2019, 09:13
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Re: Gear selection

Quote:
Originally Posted by Rockwood View Post
On the freeway, my XJ with 4.56s and 33s on steel beadlocks (got a deal, not really necessary for me since sub 15psi just means I just scrape the 8.25 everywhere) feels, er, sufficient power wise. In the hills, I wish I went 4.88. Only bummer about 4.88 on a D30 is you don't have much in the way of teeth on that pinion.
You know, people say this.

But its the exact same engagement as a 4.56, and the 4.56's seem to break more.
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Old January 10th, 2019, 10:35
LLLux31 LLLux31 is offline
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Re: Gear selection

My vote would be for 4.88s. I have 37s with 5.13s and I'll be stepping up to 5.38s soon.
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Old January 10th, 2019, 16:41
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twinhauler twinhauler is offline
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Re: Gear selection

4.56s for 33s and 4.88s for 35s is like stock.
I had 4.56s on 35s for awhile and would be out of overdrive more. 4.88s will get you about 150 more RPM which isn't much but makes a difference for hill.
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Old January 11th, 2019, 06:09
Mach2nh Mach2nh is offline
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Re: Gear selection

fully loaded with gear on a 35s with a auto and 4.56s and it drives fine. even in the mountains of NH.
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Old January 11th, 2019, 07:23
LLLux31 LLLux31 is offline
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Re: Gear selection

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Originally Posted by Mach2nh View Post
fully loaded with gear on a 35s with a auto and 4.56s and it drives fine. even in the mountains of NH.
Mach2nh: Honey are you upset?

XJ: No I'm... Fine.


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