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Old 04-03-2012, 08:25 PM   #1
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What's the worst thing...

Ok, I am new to the Jeep world in sense of automatic tranny....after reading throughout this forum I have learned that 3.73 is NOT recommended on 35's. But really, what's the worst case scenario to continue running this setup??

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Old 04-03-2012, 08:26 PM   #2
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Your car will explode.

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Old 04-03-2012, 08:28 PM   #3
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worse case is noticeable drop in fuel economy and slower acceleration. you need a lift too if you want to not worry about rubbing and if no lift at least flat fender flares and you'll rub doing any type of off road basically. but 35's look so sexy. SO GOOD!!!!
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Old 04-03-2012, 08:28 PM   #4
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Quote:
Originally Posted by Wrangler_Man11
Ok, I am new to the Jeep world in sense of automatic tranny....after reading throughout this forum I have learned that 3.73 is NOT recommended on 35's. But really, what's the worst case scenario to continue running this setup??
Worst case?

Nobody says you can't do it. Not ideal but can be done.
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Old 04-03-2012, 08:32 PM   #5
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I have a 4.5 LA lift so that is not a problem. I have proper back spacing as well. I run 35x13.5's and have NO rubbing at all. I have noticed a small amount of power loss at highway speeds when attempting to pass slower vehicles but then again, the reason for buying the Jeep and doing the mods was NOT to haul ass....that's what my Z-28 is for!
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Old 04-03-2012, 08:33 PM   #6
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actually I personally know of some who are running the 373 with 35"s, their complaint is not with wheeling but every day driving, mileage has dropped to 14 or worse. pickup suffers. In wheeling it supposedly over stresses the axle shafts on the stock front worse than rear, that I would believe. In low range doubt its a significant problem for the trans while crawling, mudding could be another story, I have 373 and 33's so havent noticed a real issue for my off road use, but then its new so not getting much full throttle blasts up muddy slopes etc. 35 on similar jeeps havent grenaded the rears yet.
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Old 04-03-2012, 08:38 PM   #7
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I don't do a lot of "hardcore" wheeling either. I drive the beach, climb sand dunes, get muddy after rainstorms, and drive through corn fields. I haven't noticed any difficulty doing this in either 4hi or 4lo. I just wanted to make sure I wasn't going to prematurely break/shear something off since she is my DD.
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Old 04-03-2012, 08:41 PM   #8
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Quote:
Originally Posted by Wrangler_Man11
I don't do a lot of "hardcore" wheeling either. I drive the beach, climb sand dunes, get muddy after rainstorms, and drive through corn fields. I haven't noticed any difficulty doing this in either 4hi or 4lo. I just wanted to make sure I wasn't going to prematurely break/shear something off since she is my DD.
If it works for you then don't worry about it.
Regearing will get lost power back and possibly Mpg's. Sup to you !!!

Worst case.... "Spent $2k on gears"
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Old 04-03-2012, 08:46 PM   #9
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Originally Posted by kjeeper10 View Post
If it works for you then don't worry about it.
Regearing will get lost power back and possibly Mpg's. Sup to you !!!

Worst case.... "Spent $2k on gears"
Thanks, I kinda figured that was gunna be the worst thing I could do. Now y'all just saved me 1500-2000 that I can use for the front bumper/winch and the rear tire carrier
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Old 04-03-2012, 08:47 PM   #10
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Your car will explode.
Good thing I am not referring to a "car"!!
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Old 04-03-2012, 09:40 PM   #11
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i'm running 35s with a 3.73... and i'm fine. in florida it's not that bad, eventually i will regear... on the highway, yeah i notice it, but i try to stay off them as much as possible anyways. that's where all the idiot drivers are.

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Old 04-04-2012, 09:27 AM   #12
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OP, if you regear you will notice a night and day difference but it's up to you. If you have the 3.8L or 3.6L, that will determine what gears you want. Taking the plunge for gears isn't money wasted.

BTW, why did you need a LA 4.5" lift if you don't do "hardcore" wheeling?

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Old 04-04-2012, 09:31 AM   #13
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OP, if you regear you will notice a night and day difference but it's up to you. If you have the 3.8L or 3.6L, that will determine what gears you want. Taking the plunge for gears isn't money wasted.

BTW, why did you need a LA 4.5" lift if you don't do "hardcore" wheeling?

-Dan
I have the 3.8. I got the lift kit from a buddy who swapped his to a 6" and I got it for next to nothing. IF I would have shopped and bought at retail I would have gone a different direction. But you can't beat the price I paid for it.
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Old 04-04-2012, 09:35 AM   #14
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My dad does it
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Old 04-04-2012, 09:40 AM   #15
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Quote:
Originally Posted by Wrangler_Man11 View Post
I have the 3.8. I got the lift kit from a buddy who swapped his to a 6" and I got it for next to nothing. IF I would have shopped and bought at retail I would have gone a different direction. But you can't beat the price I paid for it.
IMO you would benefit imennsely from putting in 5.13's. If you were a 3.6L, you could definitely get away with the 4.5" lift and 35's. The gears will help you put what little HP the JK has down to the pavement.

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Old 04-04-2012, 09:49 AM   #16
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IMO you would benefit imennsely from putting in 5.13's. If you were a 3.6L, you could definitely get away with the 4.5" lift and 35's. The gears will help you put what little HP the JK has down to the pavement.

-Dan
Thanks Dan, I will look into this swap.

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