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Sovereign08 06-07-2013 01:17 AM

Gearing on 98 tj
So I'm doing my gears on a Sahara tj. Has d30 front and d44 rear and originally thought the 4.10 would suffice, but I'm getting mixed answers from friends. It's a trail/camping/hunting jeep that is still a daily driver. Would going to a 4.56 or 4.88 ratio be too much as a daily driver? The trails I do have 3 foot water and large fallen logs, steep inclines, but no real rock crawling. Any input is appreciated :)

Jeep_Gypsy 06-07-2013 01:21 AM

I had the same problem, I went with 4.56 and 35s been like that for about 18 months. I love it and highly recommend them.

4Jeepn 06-07-2013 06:43 AM

what transmission do you have and what size tires do you plan to run.

Sovereign08 06-09-2013 01:31 AM

Currently I'm on some 33" 12.50's on 15 steels and love them. If anything I'm getting MUDs in 33" instead of the a/t I have. It's a 5spd, np231 tv with an ax15 tranny. Been talking with some friends and since I'm going to a long arms kit in 4.5" soon with the same tires the 4.56 sound like a great option since this will get light wheeling at least 2 weekends a month plus just daily to work. I think I'm passing on lockers for now but they will come

OregonPlinker 06-14-2013 09:56 AM

My buddy just went 4.56 on his with 33s and 5spd he likes them a lot

Jeepfixer1 06-15-2013 10:44 AM

I'd reccomend 4.56s that way you'll have good power in fifth gear climbing hills.

Jeepfixer1 06-15-2013 02:32 PM

I'm sure that should put you about 25/2600 rpm in 5th gear at 65mph.

Goalieme 06-17-2013 11:28 AM


Originally Posted by Jeepfixer1 (Post 3863672)
I'm sure that should put you about 25/2600 rpm in 5th gear at 65mph.

I have a 98 TJ with similar running gear (8.8 rear but same everything else). I just went to 4.56s. Love them. 70 is 2700 rpms on almost new 33x10.5 BFG MT KM2s. I think I would have regretted 4.10s.

Sovereign08 07-01-2014 04:29 AM

Hey guys just a super late update, love the 4.56 sierras I put in. Took me 9 hours on the front to fully clean the axle and shim and like 15 on the back. The track loc from Chrysler was at 15/1000 in of play and only rated for 4-7 lol so it was shot. Replaced that and being first time took me awhile to figure out how the clutch packs fit in there but it is a champ. 1st and 2nd are the same basically city, but rarely need 3rd on steep trails. I can feather my throttle and she climbs almost any hill is 2nd gear. When I catch sand I will stop and transition to low if it's bad, but it still pulls out in 2nd gear. Jeeps should come with 4.11+ setups the stock 3.73 in my Dana 44 is such crap compared. Any questions on parts compatibility hit me up!

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