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re-gearing questions (3.21 to 4.10 or 4.56)

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Old 08-12-2013, 12:30 PM
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Originally Posted by jkmadness
4.56 is not optimal for 32's or 33's.....I have a 2012 auto ,on 33's and 4.56...it feels like a ferrari around town but on the highway just like someone else said 2800rpm at 70 is a bear.......go with 4.56 and put 35's on (perfect set up ).
Thanks for the weigh in
Old 08-12-2013, 01:04 PM
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You may be better off looking for some takeoff parts from a Rubi if you want to do the 4.10.
Old 08-12-2013, 01:28 PM
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I have stock 4:10's from an 09 rubi for sale.
Old 08-12-2013, 01:31 PM
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Originally Posted by DougM
You may be better off looking for some takeoff parts from a Rubi if you want to do the 4.10.
no can do unless you swap the entire axle.
Old 08-12-2013, 01:37 PM
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Originally Posted by gibsonfirebird12
hmm that's a good point. considering the fact that it's a daily driver, maybe I should consider 4.10 or 3.73. Though I'm not sure gearing to 3.73 would be worth the cost. I'm just worried about the heightened cost of 4.10 (if that's even true)
I wish it were not but I have not been able to find any decent prices on 4.10's. If you do let me know because I think 4.10's are perfect. My buddy runs 35's with 4.10's on his 13rubicon and he wheels hard (he is an ex pro off road racer).
Old 08-12-2013, 01:51 PM
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I've run 33's (Duratrac's) and 35's(toyo mt's) on 3.21's. 35's on 4.56's. 33's and 3.21's are decent. I would average like 17mpg mixed residential and highway. 35's and 3.21's was miserable, weak on the highway and from a stop. Too fast off road making it hard to control without being on the clutch constantly.

4.56's are good, borderline too deep for 35's if you drive on the highway regularly. Leaves you with enough power for the eventual jump to 37's. Recent 800mile trip averaged 16.2mpg going Northern NJ through the Adirondack's to Montreal and back.

Basically, figure out what you plan on doing with it before you spend any money. I would recommend saving the money unless you're going to move to 35's.



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