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Old 03-29-2013, 01:42 AM   #1
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4.88 gears

Ok simple question here for you guys . I have never messed with rears before so I'm dumb to it lol . Will 4.88gears fit in a dana 30 and 35 rears on my 98 jeep wrangler . I have stock gears now with 33" tires and was told I need to jump up to 4.88

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Old 03-29-2013, 03:29 AM   #2
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Well after what I have read on other threads I think I read they will. Now can I put a locker in these rears like I said new to rears never regeared or anything so sorry if I'm asking dumb questions

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Old 03-29-2013, 04:15 AM   #3
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What gears are in it now? If you 3.07 like me you'll need a new carrier as well.
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Old 03-29-2013, 04:44 AM   #4
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Old 03-29-2013, 04:47 AM   #5
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I was told 4.11 gears are in it but ill check . Thanks for the input



As for beating a dead horse sorry my post wasn't up to par for you thanks for your responce tho . Answered my question glad you took the time out of your day to help me ty
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Old 03-29-2013, 08:13 AM   #6
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Any help here guys would be great
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Old 03-29-2013, 12:01 PM   #7
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Yes 4.88 gears will work in your Dana 30 and Dana 35 axles. And if your axles do presently have 4.10/4.11 gearing you will not need any new carriers. The 4.88 ratio is a good choice assuming you have the 2.5L engine. For the 4.0L engine, 4.56 is the way to go.

Do not add a locker to your Dana 35, its axle shafts are simply not strong enough for a locker. If you want a locker & can't upgrade your rear axle, install the locker into your front Dana 30 which is strong enough. In 2wd on the street, a front locker won't be noticeable except a bit of clicking during turns. They only lock up hard when you shift into 4x4.
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Old 03-29-2013, 02:31 PM   #8
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Thanks Jerry and yes its a 2.5 with a 5speed . So 4.88 would get me to where I need to be with a 2.5. At the moment I can't use 5th gear the jeep just don't have it in it to get the speed up with the gear set up. Thanks for the info
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Old 03-29-2013, 02:41 PM   #9
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I currently have 4.88s in my 2.5L and they work great and I have plenty of power. I do second what Jerry said about the locker though. I am currently saving up for a new axles cuz those open diffs just don't cut it
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Old 03-29-2013, 02:44 PM   #10
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Thanks . Ya at present I can't get the speed up and if I shift to fifth it loses speed lol bought it off a kid who lifted it and put on the 33" tires but nothing more .
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Old 03-29-2013, 04:59 PM   #11
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how come you dont want to run 4.88s when you have a 4.0L?
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Old 03-29-2013, 05:49 PM   #12
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I have 2002 with the 2.5 and 5 speed. I am currently running 4.88 with 31 duratrac's , Spartan in the front and tru trac in the dana 35 with cromo axles. I went with these gears thinking about 32's or 33's, I might stay with 31's. I run about 3500 rpm at 75. yes, a little over geared, but I like it.

-Steve
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Old 03-29-2013, 06:33 PM   #13
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how come you dont want to run 4.88s when you have a 4.0L?
Because the 4.0L has more torque/power & doesn't need as high of an engine RPM as the 2.5L does to turn that size tire. 4.56 is ideal for 33" tires, 5-speed, and 4.0L engine.
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Old 03-29-2013, 06:47 PM   #14
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Ok so let me see if I understand this seems simple . Put 4.88 gears in the dana 30/35s no lockers and ill be good to go on the 33 10.50 R15 tires wih a 4banger and a 5 speed . Ok I got it now anyone know some links for a good 4.88 gear set up
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Old 03-29-2013, 06:52 PM   #15
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clicking rear end

here's a rookie question? I just puchased my 2005 wrangler which has a nice lift kit on it. When I turn taking off there is a loud clicking noise from the rear end annoying. going straight no vibration at all. just whn turning starting off. any help would be great.

Thanks
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Old 03-29-2013, 06:55 PM   #16
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Originally Posted by DkR View Post
Ok so let me see if I understand this seems simple . Put 4.88 gears in the dana 30/35s no lockers and ill be good to go on the 33 10.50 R15 tires wih a 4banger and a 5 speed . Ok I got it now anyone know some links for a good 4.88 gear set up
try east coast gear supply
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Old 03-29-2013, 07:00 PM   #17
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Originally Posted by Wmarceau View Post
here's a rookie question? I just puchased my 2005 wrangler which has a nice lift kit on it. When I turn taking off there is a loud clicking noise from the rear end annoying. going straight no vibration at all. just whn turning starting off. any help would be great.

Thanks
That most likely means you have an auto locker. Out of curiosity do you have the dana 44 or the 35 rear?
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Old 03-29-2013, 07:04 PM   #18
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The reason you hear clicking is your left and right wheel are spinning at different speeds, so you hear the locker clicking. When going straight the wheels are spinning at the same speed, so no clicking.
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Old 03-29-2013, 07:10 PM   #19
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... anyone know some links for a good 4.88 gear set up
Since you will be having a shop install your new gears for you, do NOT buy any parts on your own to give to a shop to have installed. Have them provide all parts so when they are done, they will warranty everything including all parts & labor. If you provided the parts, they would only warranty their labor & if something went wrong, they'd blame the gears & have you get them replaced under warranty. I know you can usually get the parts cheaper but just ask the installing shop to give you a discount on the parts if you have them install them, which they usually will... but you have to ask them.
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Old 03-29-2013, 07:12 PM   #20
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Hmm ok was going to brake out the old books and read then try to do it on my own . So I guess letting the ahop do it os better . I mean heck I do most work myself lots of test and retest lol but maybe I should save this for the shop
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Old 03-29-2013, 07:16 PM   #21
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I have a shop full of tools, air tools, welders, etc. & enjoy wrenching on my TJ. I've had my axles apart, replaced & repaired lockers, etc. but I won't install and set up my own ring & pinion gears. It's just too technically demanding, time consuming, and if you don't get it right the new gears will be toast. Heck even experienced R&P mechanics occasionally screw it up & have to redo it 6 weeks later as happened to me on my first regear job.
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Old 03-29-2013, 07:20 PM   #22
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Thanks jerry so shop it is then lol yea since you put it that was I got the picture . Yea guess ill have him fix the steering since he will already be under it thanks for the info
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Old 03-29-2013, 10:05 PM   #23
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Originally Posted by Jerry Bransford View Post
Because the 4.0L has more torque/power & doesn't need as high of an engine RPM as the 2.5L does to turn that size tire. 4.56 is ideal for 33" tires, 5-speed, and 4.0L engine.
What if I have 35" tires?

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