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Gear ratio question.

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Old 08-20-2012, 11:26 PM
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Default Gear ratio question.
Yes, I have searched.

The charts say that with a 32"tire my xj ratio for an overdrive automatic should be at least 4:88 gears.

What are your thoughts?

Thanks
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Old 08-20-2012, 11:38 PM
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year of your jeep and tcase would've been helpful info. looks like aw4/231 on 32's will do 2100rpm @ 65mph with 4.10 gears
this is almost exactly stock rpm's
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Old 08-21-2012, 12:01 AM
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Ya 4.10s would be good to keep it stock, if you want more torque you could do 4.56s
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Old 08-21-2012, 12:02 AM
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Use the gear calculator at www.grimmjeeper.com
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Old 08-21-2012, 01:52 AM
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Thanks guys. So the chart was pretty close. I would like it lower than stock. So 4:56 or 4:88's seems spot on for me.

You just saved me some money. I almost bought a 3:73 set.

Thanks
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Old 08-21-2012, 06:27 AM
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Originally Posted by holycaveman
Thanks guys. So the chart was pretty close. I would like it lower than stock. So 4:56 or 4:88's seems spot on for me.

You just saved me some money. I almost bought a 3:73 set.

Thanks
And you would have never noticed the difference.
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Old 08-21-2012, 07:00 AM
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Would you need to change both carriers? I'm considering this too while I'm in there to replace leaky seals.
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Old 08-21-2012, 07:09 AM
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Depends on which axles you have.
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Old 08-21-2012, 07:13 AM
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I say 4.56
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Old 08-21-2012, 08:10 AM
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Originally Posted by lowrange2
And you would have never noticed the difference.
10 ply tires. I already notice a difference. Its a dog on serious hills and the highway
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Old 08-21-2012, 09:37 AM
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4.10 - going with a different ratio will affect your drive... You also need to change the speedo gear.
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