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Unread 06-16-2013, 11:19 AM   #1
Dluenz
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gearing?

Ive got a 1993 4.0 auto with 3.07s. Im running 31s on steel wheels and shes got no balls and horrible milage. Im going to re gear, do I wanna do 3.55s? or higher?

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Unread 06-16-2013, 11:21 AM   #2
Anticanman
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What are your end game plans? 33's? Armor? Towing a wheeling trailer? Mountain highway?
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Unread 06-16-2013, 12:13 PM   #3
dillonjm
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^^this, need more info on future plans. Don't regear twice.

If youre sticking with 31's, I'd go 4.10s. If you're keeping stock axles, it would be stupid easy to swap in 4cyl axles to get here. Were it me, I'd get an 8.8 with 4.10, a front hp30 from a 4 cyl with 4.10s and swap those in. Could be done cheaper than paying for a regear and you get a much stronger rear axle.
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Unread 06-16-2013, 07:13 PM   #4
Dluenz
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id like to end up with 33s but that would be after I do a 8.8 swap. It will be a daily driver, no towing, but there will be highway driving.
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1996 ZJ 5.2 np-249 DD. Skids.
1993 YJ 4.0 32RH auto. NP-231. Zone Offroad 2" lift. Skids. Cragar D Windows. 31s. Rugged Ridge 8500lb winch. Bushwacker Cut Outs. Cut and rebuilt most of the frame.
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Unread 06-16-2013, 07:15 PM   #5
dillonjm
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4.10s, then you can swap in the 8.8 later without redoing the front axle. The 4.10s would be good with 33s too.
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Unread 06-16-2013, 08:03 PM   #6
Dluenz
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alright good deal, so will my Jeep be screaming at 70mph with 4.10s?
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1996 ZJ 5.2 np-249 DD. Skids.
1993 YJ 4.0 32RH auto. NP-231. Zone Offroad 2" lift. Skids. Cragar D Windows. 31s. Rugged Ridge 8500lb winch. Bushwacker Cut Outs. Cut and rebuilt most of the frame.
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Unread 06-16-2013, 08:11 PM   #7
ROWA
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4.10 = 70mph 2500rpm, 17.5 mpg (Highway). I swapped in a D30 from a 4 cylinder and a 8.8 with a LSD. It is a lot cheaper and easier than regearing a axle.
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Unread 06-16-2013, 08:12 PM   #8
dillonjm
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Quote:
Originally Posted by Dluenz View Post
alright good deal, so will my Jeep be screaming at 70mph with 4.10s?
Just noticed you have the 32rh, I assumed you had an AX15, that changes my answer.

4.10 are a little too much without an OD for 31s IMHO.

3.73 would probably be better, will put you a little under 3k @70.

Sorry, I need to learn to read more closely before I post.
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Unread 06-16-2013, 08:42 PM   #9
Dluenz
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I wish I had a ax-15 in there. The only reason its an auto is because it was the right price for a project wrangler for me. And alright that sounds good.
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1996 ZJ 5.2 np-249 DD. Skids.
1993 YJ 4.0 32RH auto. NP-231. Zone Offroad 2" lift. Skids. Cragar D Windows. 31s. Rugged Ridge 8500lb winch. Bushwacker Cut Outs. Cut and rebuilt most of the frame.
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Unread 06-17-2013, 10:01 AM   #10
jeepdawg23
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consider this thread jacked.....jk

I have a 4cyl on 32s might go to 33s but for right now 32s anyway im looking to regear...(maybe or any other swap)...I just cant get it going past 60 unless there is a good wind helping me ....i use my yj as my dd and for some med size wheeling...any help will be usefull
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Unread 06-17-2013, 11:18 AM   #11
jsipe007
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I have 3.73s, 31x10.50s, and the AX15. Its about perfect for daily driving and cal pull 70 on the freeway easily. I dont know much about the auto trans, but 33s, the auto, and 3.73s would seem to be a good fit after calcing it out.
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Unread 06-17-2013, 07:42 PM   #12
jbrown73
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Well this explains a lot for my set up! I'm running 33x12.5 with the Peugeot BA 10/5 (rebuilt) & the stock 3.09 gears being pushed by the 4.2L.....takes for friggin ever to get up to 60 & then starts dropping at the incline of a kid's bicycle ramp!
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The only thing I can say is to close your eyes. Seriously. If you close your eyes and pay attention to your finger tips, you'll be able to feel the nuts better and manipulate them easier.
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Unread 06-18-2013, 04:44 AM   #13
fbv193
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I have a 93 auto that was stock with 3.07 gearing. I regeared to 3.73 and am running 33 inch tires and think that I have the gearing perfect. It is snappy off the line without winding out too much at higher speeds.
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Unread 06-18-2013, 06:48 AM   #14
jbrown73
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I don't even go into 5th gear with my set up and it most definitely isn't 'snappy' off the line. I d@mn near stall out when I take off at stop lights and have to whined it out before up-shifting. Would like to upgrade the gearing but have dumped so much $$ into the rig lately that it will have to go on the back burner for the foreseeable future.
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Quote:
Originally Posted by Rproject View Post
The only thing I can say is to close your eyes. Seriously. If you close your eyes and pay attention to your finger tips, you'll be able to feel the nuts better and manipulate them easier.
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