Gearing for 1998 XJ Aisen 4 speed Automatic Transmission
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Joined: Sep 2017
Posts: 18
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From: Porltand Oregon
Year: 1998
Model: Cherokee (XJ)
Engine: 4.0
I wanted some help to figure out what gearing I need, currently running 32 x11.50 but will be upgrading to 35s, have Dana 30 up front and Chrysler 8.75 in back with AISEN 4 speed automatic. I’m getting ready to install ARB Air Lockers and want to change gearing while I have diffs opened up
What should I do for Gears ?
Thanks
What should I do for Gears ?
Thanks
Last edited by cruiser54; Mar 30, 2021 at 07:38 AM.
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Joined: Aug 2018
Posts: 1,900
Likes: 346
From: Idaho
Year: 89
Model: Cherokee (XJ)
Engine: Peddles
Arb in the rear will work well. Detroit in the front, I feel a Detroit in the rear may be really aggressive
If in doubt a full locker in the front. Keep it simple with a Detroit or grizzly and can leave the rear open. You have to get a carrier for the dana 30 anyways to make a home for the 4.56
4.56 will be perfect in my opion. I went 4.88 in mine im at 3000rpm at 65mph with 33s . Rpm is alittle high for a daily driver
If in doubt a full locker in the front. Keep it simple with a Detroit or grizzly and can leave the rear open. You have to get a carrier for the dana 30 anyways to make a home for the 4.56
4.56 will be perfect in my opion. I went 4.88 in mine im at 3000rpm at 65mph with 33s . Rpm is alittle high for a daily driver
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EvanM
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