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3.07 or 3.55's???

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Old 07-23-2009, 06:14 PM
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Default 3.07 or 3.55's???

Which gears would be better to run as a DD with 4.5 inch lift with 33's 3.07 or 3.55's
Old 07-23-2009, 06:30 PM
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gonna have to go higher then that probably like 4.56 or something of that sort
Old 07-23-2009, 07:12 PM
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I have 3.07 its a 5speed with 33x12.50x15 and its fine
Old 07-23-2009, 07:13 PM
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how much does it affect your MPG
Old 07-23-2009, 07:24 PM
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It not bad there was a little loss but also I have a mantran so i can just float through the gear i get about 200 avg per tank and thats wheelin out back quite often. gears are a good investment and in the future i probaly will swap for some 4.10s to get a good mix of offroad and mpg
Old 07-23-2009, 07:26 PM
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410's would be good and 456 would be the hot setup for 33's i run 355 with my 4.0 and auto but it can be a dog on uphill driving i am going 456 as soon as i can
Old 07-23-2009, 08:52 PM
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Since you asked 3:55s would be better.

But 4:10s are really good on 33s and you can find axles from a 4 cyl XJ thatll direct swap into yours.
Old 07-23-2009, 09:11 PM
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I would love to be able to swap axels but i just dont have the fund to do something like that
Old 07-23-2009, 09:16 PM
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It would be cool if there was someone in my area that would wanna swap axles... well i guess just gears. but the chance of that im sure is next to none
Old 07-23-2009, 09:21 PM
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Neither 3.07s nor 3.55s are good with 33s on an XJ. 3.55s are a bit lower so they are the lesser of two evils. Your optimum gear ratio to run on an XJ with the 4.0 motor 6 Banger) is 4.56. You would probably want to go with 5.13s or even lower (numerically higher) with the 2.5 motor (4 Banger). I ran 5.29 gears with 33s and 35s on my toyota with a 2.2 4 banger and it was fine.
Old 07-24-2009, 01:01 AM
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Originally Posted by TXstiGuy
I have 3.07 its a 5speed with 33x12.50x15 and its fine
X2.....

Im running the same setup with no power problems if it is starting to bog down in 4hi i just throw her in 4low and she's good.......
Old 07-24-2009, 07:23 AM
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3:07's with 31's ...wheeled for a year plus. Dog on the hills, trails were always done in lo-2nd gear to slow the pig down. Someone mentioned 4cyl XJ's. That was my route. Picked up a carrier and R&P from a donor 2.5. I hunted for used 8.25-4:11's but couldn't find any. Bought 'em new with both master installs for both axles. If you have a 35 rear axle, the 4cyl XJ would be a great find if R&Ps are both good. Buy a complete rough 2.5L for cheap. Strip the gears and whatever else you need and sell the balance of parts to recoup your ca$h...sha-wheat! In theory- a free upgrade! Highly saleable to the wife, hehe
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