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Old 12-03-2012, 01:46 AM   #1
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Gear question

I have a 99 TJ 4.0 with 3.5 inch lift and 33x12.50 with the 3 speed auto transmission. What gears should I changed to for my set up? My stock gears are 3.07 and it's a little sluggish.
Thanks,
Scott

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Old 12-03-2012, 07:25 AM   #2
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Quote:
Originally Posted by SOTX99TJ
I have a 99 TJ 4.0 with 3.5 inch lift and 33x12.50 with the 3 speed auto transmission. What gears should I changed to for my set up? My stock gears are 3.07 and it's a little sluggish.
Thanks,
Scott
You will want to step up to 4.10's to be at the optimum gear ratio.

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Old 12-03-2012, 11:54 AM   #3
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Quote:
Originally Posted by SOTX99TJ View Post
I have a 99 TJ 4.0 with 3.5 inch lift and 33x12.50 with the 3 speed auto transmission. What gears should I changed to for my set up? My stock gears are 3.07 and it's a little sluggish.
Thanks,
Scott
Use this link to fool around with different ratios if you wish...

Gear Ratio Calculator
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Old 12-03-2012, 01:02 PM   #4
Knows a couple things...

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Originally Posted by Thomas302 View Post
You will want to step up to 4.10's to be at the optimum gear ratio.
X2, 4.10 is the right ratio for 33" tires, 4.0L engine, and the 32RH 3-speed automatic transmission.
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Old 12-03-2012, 01:08 PM   #5
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Make sure if you have the slightest thought of going to bigger tires, gear with that in mind. No sense in regearing twice, because you will end up going to that tire size anyways.
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Old 12-03-2012, 04:36 PM   #6
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I am happy with 33's and do not anticipate going up to 35's. it's my DD and want to get the optimum ratio for my 3 speed. Thanks for y'all s help. Much appreciated
Scott

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