37s with Gears???
Thread Starter
JK Newbie
Joined: May 2010
Posts: 19
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From: pace,fl
37s with Gears???
ok i have a 2007 2door AUTOMATIC 4wd jeep wrangler x, i dont know what kind of axles & gears (stock) i have to start with and also i have 35 right now and i lost a good bit of power going to 35s and now i am goin to 37x13.50x20 so i'm going to regear and i wanted to know what gears i need to get my power back to stock (or better) ???
Last edited by jkwhite12; Jan 1, 2011 at 08:04 AM.
Thread Starter
JK Newbie
Joined: May 2010
Posts: 19
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From: pace,fl
[QUOTE=JK_Sport;2010078]well being as you have an X, then 5.13s is the lowest you can go. So with that being said. 5.13s[/QUOTE
1) Automatic
2) So if i go with 5.13s will it be close to stock power and shift points??
1) Automatic
2) So if i go with 5.13s will it be close to stock power and shift points??
JK Jedi Master
Joined: Jan 2008
Posts: 11,463
Likes: 165
From: Austin <--> Colorado Springs
Open the Drivetrain FAQ's stickied to the top of this modified area and plug some numbers into the charts.
There were several axle combos available in 07, so you actually need to go look at them, or send in your VIN for a new build sheet.
Most likely - D30 front / D44 rear
Less likely - D44 front / D44 rear
Sucks to be you - D30 front / D35 rear
Also find out which gears you currently have. If you have 3.21's, you will need a new front carrier. 3.73 or 4.10 you won't. (The build sheet will show the ratio also)
With a D30 front, 5.13's are as low as you can go. With an Auto, don't even consider any other ratio. And with 37's, seriously consider strengthening that front axle when the gears go in.
You will also want a ProCal/Flashpaq/whatever.
But my opinion on it - just order a PR44 with 5.38's and then regear the rear to match.
There were several axle combos available in 07, so you actually need to go look at them, or send in your VIN for a new build sheet.
Most likely - D30 front / D44 rear
Less likely - D44 front / D44 rear
Sucks to be you - D30 front / D35 rear
Also find out which gears you currently have. If you have 3.21's, you will need a new front carrier. 3.73 or 4.10 you won't. (The build sheet will show the ratio also)
With a D30 front, 5.13's are as low as you can go. With an Auto, don't even consider any other ratio. And with 37's, seriously consider strengthening that front axle when the gears go in.
You will also want a ProCal/Flashpaq/whatever.
But my opinion on it - just order a PR44 with 5.38's and then regear the rear to match.
Last edited by nthinuf; Jan 1, 2011 at 11:28 AM.