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Gear time

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Old Dec 30, 2013 | 02:32 PM
  #1  
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Default Gear time



Heres what i got. 2011 JK sport. has 3:73s now. Automatic.....Cant stand driving it. There are a lot of opinions from what ive been reading on this. Im pretty sure id like to get into 5:13s
I will be putting 35/1250/18 mud grapplers on this the next go round. Currently in the pic above its sitting on 295/70/18s.

I was hoping someone could chime in and give me the part numbers for everything i need to do this.
Yah, mostly laziness! Nah, but really i just want to make sure ive got the write stuff. ive looked everything up, just wanna double check with you. Yukons are what ive been pricing around.
Thanks for the help
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Old Dec 30, 2013 | 04:18 PM
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What is your mounted tire height? What type if terrain do you wheel on? What kind of roads do you see most often, flat, hills, etc?
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Old Dec 30, 2013 | 05:11 PM
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5.13's are awfully low gears for 35's. I just put in 4.56's and I'm turning 2650rpms at 70mph. 5.13's would be screaming @ 70. Look for the install kit on Amazon I got mine for $92 shipped. I used USA gears.
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Old Dec 30, 2013 | 05:15 PM
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Trust me and all of the other threads on this subject 5.13s are pretty much perfect and 4.88s aren't to bad.

I went with 4.88s because the guy who installed them talked me out of 5.13s. I'm happy with the choice but wish I would have went 5.13s.

I also have a 2011 Unlimited auto on 35s.
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Old Dec 30, 2013 | 05:17 PM
  #5  
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Originally Posted by Barry Smith
5.13's are awfully low gears for 35's. I just put in 4.56's and I'm turning 2650rpms at 70mph. 5.13's would be screaming @ 70. Look for the install kit on Amazon I got mine for $92 shipped. I used USA gears.
11' jk auto. Not at all. 5.13's will be perfect for DD. I went 4.88s for a little more strength but 5.13 would have been more desirable. Go for it. I went with G2's and master kits for about 700 canadian.
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Old Dec 30, 2013 | 05:35 PM
  #6  
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Originally Posted by Barry Smith
5.13's are awfully low gears for 35's. I just put in 4.56's and I'm turning 2650rpms at 70mph. 5.13's would be screaming @ 70. Look for the install kit on Amazon I got mine for $92 shipped. I used USA gears.
Barry I assuming you've got a 2012+. Our over drive is much higher than the pre 2012. I think they have a .69 od and we have an .82 so 5.13 would be lower rpm than us
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Old Dec 30, 2013 | 05:38 PM
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I'm sorry I should have looked closer.
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Old Dec 30, 2013 | 06:00 PM
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Originally Posted by blue project
What is your mounted tire height? What type if terrain do you wheel on? What kind of roads do you see most often, flat, hills, etc?
Tires measure 34ish inches...34.25" .....The wheeling part i havent done much of Ranch trails, deer hunting, creek crossings and ditches.(Still waiting to get driveshafts)
Here in MO where i live, its a mix of flat and gradual sloped hills, with a few places of medium grade.
Id like to gain some MPGs, but to me i want this thing to be driveable. i know its not going to be a race car. Id rather have the power to go then a mile or two per gallon.

My normal driver is a 500hp diesel truck, so it feels like im driving a turd when i get in the jeep.
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Old Dec 30, 2013 | 06:04 PM
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Yah Barry if i had the drag car motor like you have in yours id go with the smaller gears!
3.8L for me. Still dont know why they keep putting these stupid v6 motors in these. You could get better fuel mileage from there small v8 they put in the cherokees
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Old Dec 30, 2013 | 06:08 PM
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Jeep JK Non Rubicon Gear and Master Installation Kit Package 5 13 Gear Ratio | eBay

These seem reasonable.looks like its all id need.
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