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Unread 04-24-2008, 06:08 PM   #1
jeff83
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Stock Gear Ratio on a 83 CJ-7
What would be the stock gearing for a 83 CJ-7. Like 3.07?

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Unread 04-24-2008, 06:09 PM   #2
brussell
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I had 2.73's..that sucked..
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Unread 04-24-2008, 06:15 PM   #3
ReconRabbit
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Mine too......
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Unread 04-24-2008, 06:22 PM   #4
limegreenCJ7
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look on your rear axle...
to the right of the diff cover
there'll be two capital letters
DD and its 2.73
I'm not sure the other codes
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Unread 04-24-2008, 06:39 PM   #5
SuB8HaVeN
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I have 3.31s from the factory. I don't like them, but I don't hate them.

http://www.jeeptech.com/axle/amc20.html

You can use those codes to ID your rear end, and hopefully your front end has the same gear ratio. Of course you never really can tell if the PO has swapped gears. I hopped into a CJ-7 one time that had the markings for 2.73 and you couldn't let off the clutch without spinning the tires in that thing, so it must have been running 4.10 or 4.56 most likely.
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Unread 04-24-2008, 06:50 PM   #6
jeff83
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Alright thanks for the help guys. Just one more question would 4.10's be good for 34x10.5x15 LTB's?
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Unread 04-24-2008, 07:49 PM   #7
brussell
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4.10's with a DANA 300 and a 4.1 1st gear will work mostly but I find myself wishing I had a t18(or some other 6.1 granny gear sometimes). NVG4500 would be best. Then you could go 4.56 w/a 4.1 DANA 300 and still hit 65 mph
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Unread 04-24-2008, 07:59 PM   #8
jeff83
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The only problem with that is i just swapped out a t-4 for an SR-4
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Unread 04-24-2008, 10:19 PM   #9
only in a jeep cj
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Quote:
Originally Posted by jeff83 View Post
The only problem with that is i just swapped out a t-4 for an SR-4
Sorry, you went backwards in the transmission chain.....
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Unread 04-25-2008, 06:16 AM   #10
jeff83
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Quote:
Originally Posted by only in a jeep cj View Post
Sorry, you went backwards in the transmission chain.....
Yeah i no it was cheap
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Unread 04-25-2008, 07:10 AM   #11
SuB8HaVeN
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If you ran 4.10 gears, in 4th gear you would need to turn 2400-2500RPM to do 60mph, and about 2600-2700RPM to do 65mph.
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Unread 07-18-2012, 06:32 PM   #12
papajeep60
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CJ axle ratio codes
Check out this web site for Jeep Axle codes:

http://www.jeeptech.com/axle/amc20.html
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