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plz help asap! 99 Jeep Wrangler tj re gear

 
Old 12-04-2012, 10:36 PM
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Default plz help asap! 99 Jeep Wrangler tj re gear

I have a 99 tj 4.0L with the 3 speed auto no od, I'm running 36in tires and can't decide what great ratio to go with, I went from 3.73s to 4.88s and that was way to low to run on the highway and the 3.73s where to high any suggestions on a good between gear for my daily driver/4x4???
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Old 12-04-2012, 11:22 PM
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Any gears you put in it are going to be horrible on gas with that tranny an running those tires. Best bet would be 4.10 or 4.56 if you can find them. What rear end do you have the 35 or 44?
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Old 12-04-2012, 11:32 PM
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I agree I'd go 4:10 if you say 4:88 was way to low then 4:56 may still be too low for you 4:10 is pretty low, plus you could add a rubicon tcase if want low gears offroad and good highway gears on road.
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Old 12-05-2012, 12:04 AM
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It has the 35..... I really wish it was a 44
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Old 12-05-2012, 12:20 AM
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I'm ordering the gears new so I don't have to worry about finding them, I was thinking about going with Yukon gears I've never herd anything bad about them, anyone have a preference that I should look into?
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Old 12-05-2012, 12:29 AM
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I'd watch going anything over 4.10 in the 35 cause you start getting the pinion teeth real thin an have a good chance of grenadine the rear end. I'd try to find a 44 cause even with the 3.73 under load off roading that 35 won't hold up to well. The best of both world is hard to find in a jeep it's either bad ass off roading or mall crawling. You have to sacrifice one for the other!
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Old 12-07-2012, 02:05 PM
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Originally Posted by muddler! View Post
It has the 35..... I really wish it was a 44
I can look Monday and see if we have a 44 for it.
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Old 12-07-2012, 03:36 PM
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Maybe consider the 8.8 upgrade if you really want to dump that d35. I have a 99 w/4:10's. i also have 33's , the difference is mine is a 5 speed. Gearing is always going to be odd on the highway... I find the 4:10's and 33's a bit underpowered on the highway w/the 5 speed. But I wouldn't hesitate to throw 35's on it and keep the gearing as is. Funny around town, all the gearing I'll ever need. Its an under 75 mph vehicle...
I'm under the impression 4:10's were pretty common on the 4cyl's.. That might be an option for ya, front n back bolt on assemblies and sell yours off for some cost recovery.
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