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-   -   Maximum re-gearing for D30/35? (http://www.wranglerforum.com/f282/maximum-re-gearing-for-d30-35-a-149996.html)

Aziscohos 03-30-2012 07:44 AM

Maximum re-gearing for D30/35?
 
Is there such a thing as a maximum gear ratio for an axle? Understood that at some point if you're thinking about 4.88's, 5.13's, or higher maybe you should be thinking about a beefier axle.

I've decided to get the most out of my stock 30/35, running 33's (max 35's), putting an Aussie locker in the front, and re-gearing (currently 3.73's). Do 4.10's seem like a good target for 33's and 4.56's for 35's?

From what I've read it wouldn't hurt to upgrade my axle shafts as well?

Thanks!

Michigunman 03-30-2012 09:51 AM

The D30 is limited to 4.88 which is what most here recommend for 33" tires and the 4 speed auto. Mine is in the shop now getting 4.88s. There was discussion with the folks at the shop as to whether that was going to be too low. I will find out soon. My RPM's are/were only 2000 at 70 mph with 32's and 3.73 gears.

I don't think it would be worth the investment to go from 3.73 to 4.10. Not that much difference.

trailinone 03-30-2012 10:05 AM

I'm running a 5 spd 4 cyl with 4.10s. It sucks, so don't upgrade to 4.10s. It cost to much not to go lower. I'm about to gear to 4.88s also.
Chris

MickeYJ 03-30-2012 10:09 AM

Quote:

Originally Posted by trailinone
I'm running a 5 spd 4 cyl with 4.10s. It sucks, so don't upgrade to 4.10s. It cost to much not to go lower. I'm about to gear to 4.88s also.
Chris

I run the exact same. How much does a re gear cost? Curious

Michigunman 03-30-2012 10:14 AM

Quote:

Originally Posted by MickeYJ (Post 2200000)
I run the exact same. How much does a re gear cost? Curious

$1200 or so depending on your shop. That's for both axles.

MickeYJ 03-30-2012 10:15 AM

Quote:

Originally Posted by Michigunman

$1200 or so depending on your shop. That's for both axles.

Oh wow ok Kool thx

Aziscohos 03-30-2012 01:15 PM

Quote:

Originally Posted by Michigunman (Post 2199941)
The D30 is limited to 4.88 which is what most here recommend for 33" tires and the 4 speed auto. Mine is in the shop now getting 4.88s. There was discussion with the folks at the shop as to whether that was going to be too low. I will find out soon. My RPM's are/were only 2000 at 70 mph with 32's and 3.73 gears.

I don't think it would be worth the investment to go from 3.73 to 4.10. Not that much difference.

Too low meaning maybe you should have gone 4.56's?

trailinone 03-31-2012 07:17 AM

Quote:

Originally Posted by MickeYJ

I run the exact same. How much does a re gear cost? Curious

I'm looking at $1350 for both.
Chris

Michigunman 03-31-2012 07:38 AM

Quote:

Originally Posted by Aziscohos (Post 2200551)
Too low meaning maybe you should have gone 4.56's?

Yes. Everyone here that runs this combination of 33's, 4.88's and the 42RLE seems to be happy with it though.

GoldenSahara00 03-31-2012 07:58 AM

Just a question for the Op. what trans do you have?

Aziscohos 03-31-2012 09:06 AM

I've got the 4 spd auto.

GoldenSahara00 03-31-2012 09:08 AM

Quote:

Originally Posted by Aziscohos
I've got the 4 spd auto.

Sorry about your luck. Jk. I agree with everyone else here.


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