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Unread 04-28-2009, 10:36 AM   #1
NVRDUN
Registered User
1985 CJ7 
 
Join Date: Apr 2008
Location: CT
Posts: 88
gear question?

up grading to 35's tires, also want re gear my cj should go with 4.10 or 4.56
keep in mind that i still want be able to cruise around in my rig!
Let me have it GO!

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Unread 04-28-2009, 11:24 AM   #2
longboy
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2006 WK 
 
Join Date: Nov 2006
Location: Longmont, Colorado
Posts: 892
First step is to go here: http://www.grimmjeeper.com/gears.html

Plug in your current tire size and gearing on one side (and trans, etc.), and then try 4.56 and 4.10s on the other side and compare the differences.

If you have the T5, I'd go with the deeper 4.56 gears with 35s. I have 4.56s with my 32s, and I love it. I went deep with the gears so I'd be ready for bigger tires. 35s might be going on the CJ this summer-
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Unread 04-28-2009, 11:24 AM   #3
78treehugger
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1980 CJ7 
 
Join Date: May 2008
Location: , IN
Posts: 1,606
What engine and tranny? I have a 258, T176, 4.56 for my 35's. I like the combo. Mine is primarily offroad though. If it was a DD or primarily a street jeep then I would look closely at the 4.10s. I really like my 4.56s though and every chart I have seen shows it's right in the proper gearing for my tires. What tires are you running? Just because they say 35" on them doesn't mean they are. Most manufacturers are about 1- 1 1/2" off.
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1980 CJ 7--3" Black Diamond, 1" body, locked both ends, 4.56, 35x12.50x15 SS LTB, "family" cage

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Unread 04-28-2009, 11:24 AM   #4
jackstercj8
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1984 CJ8 
 
Join Date: Jul 2008
Location: GI Ne
Posts: 50
i would use this and figure out wats best with your drivetrain
http://www.4lo.com/calc/gearratio.htm
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