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Old 04-03-2009, 12:06 AM   #1
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Do I need to regear or what..

I have a problem and I don't know if its a gear issue or not, maybe you can help me out, I have a 4" suspension lift with 33 1250's and my commute to work has its share of inclines and hills and so on. well I will be going about 60 MPH at 2000 RPM's ( not sure if thats where it's supposed to be) and when I go up the slightest hill I loose my power, my speed drops about ten MPH and I have to mash down the gas and crank my RPM's up to like 3000 to get back up to 50 MPH and on top of that I can push the gas a bit without it gaining any speed. I hate putting that stress on my engine daily, and was wondering if I needed to re-gear I have no clue if it has been or not I bought it with the lift and tires already installed, so whats going on with my baby?

BTW I have the 4.0L straight 6 with a dana 44 rearend if it helps.

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Old 04-03-2009, 02:49 AM   #2
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You should have 3.73 gears already... auto right?

But, yeah, sounds like a regear is in your future.

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Old 04-03-2009, 09:36 AM   #3
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i have that saaaaaaame problem!! mine is set up the same exact way as yours to except i have a D35 in the back not a D44 and i was wondering that to because i hate driving on the freeway and slowing down a lot or speeding up a lot on a hill there is no in between..
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Old 04-03-2009, 10:10 AM   #4
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I have the same issue. I only have 3.07 gears and a d35 in the rear. The D35 has nothing to do with it. Regearing to 4.10 or 4.56 will give you that "pull" back. I have the same tires and a 3" lift on mine. My neighbor has the same setup as me and he has 4.10 gears and it does great.
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Old 04-03-2009, 11:28 AM   #5
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It sucks doesn't it, mine is an auto, what gears should I go with?
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Old 04-03-2009, 11:38 AM   #6
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I have 3.55's and 35's. I can go 75 at 2000 rpm's in 5th. Downhill only though lol. Yea, a re-gear is in yours and my future.

I believe for an auto and 33's your looking for 4.56's but check with the more knowledgeable for that correct gear ration.
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Old 04-03-2009, 11:54 AM   #7
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I have 3.55's and 35's. I can go 75 at 2000 rpm's in 5th. Downhill only though lol. Yea, a re-gear is in yours and my future.

I believe for an auto and 33's your looking for 4.56's but check with the more knowledgeable for that correct gear ration.
Thanks man, have you been researching prices at all?
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Old 04-03-2009, 12:05 PM   #8
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The price for parts is relatively the same. Its the labor that changes. I have gotten quotes from $1500 to $2500, but the $2500 included full rebuild of the axles front and rear, plus lifetime warranty on work and parts, which is kinda insane but I was told I couldnt break them.
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Old 04-03-2009, 05:23 PM   #9
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The price for parts is relatively the same. Its the labor that changes. I have gotten quotes from $1500 to $2500, but the $2500 included full rebuild of the axles front and rear, plus lifetime warranty on work and parts, which is kinda insane but I was told I couldnt break them.
Anything can be broken.... your just not trying hard enough.....
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Old 04-03-2009, 08:23 PM   #10
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Thats what I told him.. so he said well then well fix it for free... hehe.
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Old 04-03-2009, 08:42 PM   #11
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What tranny do you have? The 42RLE (2003+ in TJ's) has a 30% overdrive. The RPM's really drop off with big tires. I have 4.56 gears with 33" tires and it works great. I believe the older 3 speed auto is 1 to 1 ratio in 3rd gear.
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Old 04-03-2009, 11:40 PM   #12
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I have an 06 unlimited and when to 35"X12.5"X15". My Rubicon came stock with 411's in Dana 44's front and back. I changed out to 488's and that made a huge difference with the power band. The Gas MPG suffers though.... But hey, I didn't buy it cus it was good on gas!!!... I still have my stock 411 ring and pinion sets. If you have dana44's and decide 411's are what you need LMK...
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Old 04-03-2009, 11:51 PM   #13
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Southern Offroad in Pelham (just south of Birmingham on I-65) quoted me 1200-1300 with Yukon gears. Thats changing from 3.07 to 4.10 gears. It is a good shop!

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