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Unread 10-28-2012, 09:25 AM   #1
Rtone1583
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2009 JK Wrangler 
 
Join Date: Oct 2012
Posts: 194
Information sites and vehicle specific numbers

Not sure if any of these have been posted before or not. Just some transmission/transfer case information and supporting sites that I have found.

Hopefully all who are gear heads can add to this or correct what is incorrect and gear heads/non-gear heads can find some useful information.

Gear ratio calculator: http://www.grimmjeeper.com/gears.html

Tire size calculator: http://www.dakota-truck.net/TIRECALC/tirecalc.html

Transmissions:

Manual NSG370, http://www.novak-adapt.com/knowledge/nsg370.htm

Auto (4 speed, 2007-2011) - 42RLE, http://project-jk.com/jeep-jk-write-...ission-service

Auto (5 speed, 2012-????) - W5A580

Transfer case:

X/Sport/Sahara: NV241, 2.72:1 low range

Rubicon: NVG241OR, 4:1 low range, http://www.novak-adapt.com/knowledge/np241or.htm

Axles:

X/Sport/Sahara front: Dana 30 with 3.21 or 3.73 gears (4.10 optional towing package in 07, 08 forward only 3.73 is optional).

X/Sport/Sahara rear: Dana 35 with 3.21 or 3.73 gears (4.10 optional towing package in 07, 08 forward only 3.73 is optional).

Rubicon: Dana 44 with 4.10 gears.

http://project-jk.com/jeep-jk-tech/j...er-axle-basics

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Unread 10-28-2012, 12:49 PM   #2
ronjenx
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2008 JK Wrangler 
 
Join Date: Jan 2009
Location: Maine
Posts: 3,968
Quote:
Originally Posted by Rtone1583 View Post

Transfer case:

X/Sport/Sahara: NV241, 2.72:1 low range

Rubicon: NVG241OR, 4:1 low range, http://www.novak-adapt.com/knowledge/np241or.htm

Axles:

X/Sport/Sahara front: Dana 30 with 3.21 or 3.73 gears (4.10 optional towing package in 07, 08 forward only 3.73 is optional).

X/Sport/Sahara rear: Dana 35 with 3.21 or 3.73 gears (4.10 optional towing package in 07, 08 forward only 3.73 is optional).
The link about the transfer case isn't up to date. The JK doesn't have a speed sensor in the transfer case.

The '07 4.10 axle ratio option wasn't tow package dependent.
In the '07 model year, the only axle choices were 3.21 and 4.10.
I have seen an '07 non-Rubicon with the 4.10 axles, and no factory tow package.
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Unread 11-16-2012, 12:40 AM   #3
Rtone1583
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2009 JK Wrangler 
 
Join Date: Oct 2012
Posts: 194
More information on the W5A580 automatic.

http://www.allpar.com/mopar/transmis...AG1-WA580.html
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Unread 11-16-2012, 12:54 AM   #4
Rtone1583
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2009 JK Wrangler 
 
Join Date: Oct 2012
Posts: 194
Differential identification:

http://www.nationwideparts.com/differentials.htm

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automatic , axle , manual , tires , transmission

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