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Unread 01-27-2008, 08:15 PM   #1
Anti-bling
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Rubicon axles?

I can no longer use O/D (over drive) on the highway. I have 33's and stock 3.73(dana 44 and 30)...i think is what they are, and as soon as O/D kicks in, the jeep quickly loses momentum and speed. Its frustrating. I know the rubicon axles have 4.10s, would this be a large enough adjustment? Plus they have lockers. Are they hard to find? Is the swap hard? expensive? any help would be great!

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Unread 01-27-2008, 08:19 PM   #2
snakester14
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It would most likely be cheaper to keep your current set up and just regear/Lock it.
just my 2 cents.
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Unread 01-27-2008, 08:21 PM   #3
Anti-bling
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to 4.10's? thanks for the reply
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Unread 01-27-2008, 08:29 PM   #4
Wheelin98TJ
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3.73 to 4.10 is a 10% change, not much really.

For your setup, I'd go with 4.88.

Your 4 speed has a tall OD ratio of 0.69:1. This means you can run low axle gears and still be right within the acceptable RPM range for cruising on the highway.

With 4.88 gears and 33" tires, you'll turn about 2,500 RPM at 70 which is perfect. You'll have great low end power too.
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Unread 01-27-2008, 08:52 PM   #5
That1guy
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It would alot easier to regear than to buy new axels, unless you wanted a front 44 and the locker. Then you can just regear that too i guess. Anyways like said 4.88's are nice.
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Unread 01-28-2008, 12:20 AM   #6
Bigbob
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Quote:
Originally Posted by Anti-bling
I can no longer use O/D (over drive) on the highway. I have 33's and stock 3.73(dana 44 and 30)...i think is what they are, and as soon as O/D kicks in, the jeep quickly loses momentum and speed. Its frustrating. I know the rubicon axles have 4.10s, would this be a large enough adjustment? Plus they have lockers. Are they hard to find? Is the swap hard? expensive? any help would be great!

With an auto you want 4.88. Maybe 4.56 if you don't do hills. 4.10/auto/33" tires= no bueno. I got a 6 speed on my rubi so I did not have to regear.
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