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Unread 05-11-2013, 10:20 AM   #1
Boomshocka
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Recommendation of Axle Gear Ratio

Looking for some tips on what Gear Ratio i should go with Running 36x14.5x15 tires the jeep is not a everyday driver. Looking to get good power off road and still keep the rpm down on the road.

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Unread 05-11-2013, 10:43 AM   #2
Wheelin98TJ
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4.88.

This is also the lowest you can go with the D35 and TJ D30.

RPM will be 2,400-2,500 at 70 MPH.

Now would be a good time to do something with that rear axle. Also would be a good time to add a locker or 2.
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Unread 05-11-2013, 11:07 AM   #3
Jerry Bransford
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X2 on the 4.88 recommendation, don't even consider 4.56.
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Unread 05-11-2013, 02:46 PM   #4
Boomshocka
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any tips on the lockers also?
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Unread 05-11-2013, 03:00 PM   #5
Jerry Bransford
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Ooohh wait... if your rear axle is still a stock/unupgraded Dana 35, I wouldn't even consider installing 36" tires. 33" is the biggest tire size I'd recommend for a stock Dana 35. If you upgrade the axle shafts to hardened alloy 30 spline shafts, you'll be good to go for 35" tires. 36" is pushing it for the front Dana 30 and for even an upgraded rear Dana 35. I wouldn't install a locker into a stock Dana 35 rear axle no matter what tire size was installed, its 27 spline carbon steel axle shafts just aren't strong enough for the locker or for 35" or bigger tires.

For the front, the type of locker depends on if you need to use 4x4 to get around during the winter. If you can manage in 2wd, then a front lunchbox locker like an Aussie, Lockright, or No-Slip is fine. If you must use 4x4 during the winter when driving on slick streets, I'd go for a selectable locker like an ARB Air Locker.
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Unread 05-11-2013, 07:52 PM   #6
Evildriver-3
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You can do a ARB or Eaton or TJM selectable for the front, of which one of them will be the best choice over anything else for the front.
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