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Old 02-03-2012, 08:53 AM   #1
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just wondering

does anyone know what gear ratio an 04 wrangler with factory 30s would have

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Old 02-04-2012, 09:04 PM   #2
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what model? x, sport, rubicon?

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Old 02-05-2012, 06:11 AM   #3
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gear ratios

its a sport model.
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Old 02-05-2012, 10:00 PM   #4
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probably 3.73...check to see if your diff tag is legible...both differentials have a metal oval shaped tag on the left side of the diff cover...theres a bunch of numbers on there but the first 3 numbers on the 2nd row of numbers will be your axle ratio, being an 04 it shouldnt be rusted out too bad so you might still be able to read it.
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Old 02-06-2012, 02:18 PM   #5
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thank you Wrangler06. i cant see any diff tag under there but going by the rpms it seems right. at 60mph its at 2100rpm in 5th gear. thanks again.
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Old 02-06-2012, 09:22 PM   #6
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sounds about right to me..and for the 5 speeds the 4.0s were 3.73s unless it was a rubi..6 speeds have 3.07s
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Old 02-07-2012, 01:58 PM   #7
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What's your VIN?
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2012 CRUSH JKU Sahara
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Old 02-07-2012, 11:44 PM   #8
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vin #?

Its 1j4fa49s84p791758
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Old 02-08-2012, 10:26 AM   #9
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You have 3.73 gears. Any other questions, let me know.
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Old 02-08-2012, 02:18 PM   #10
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ratios

ok thank you brainofj01. as you know. its good to know
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Old 02-11-2012, 10:11 PM   #11
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3.73

with said 3.73 gearing could i get away with 31s without any problems
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Old 02-20-2012, 05:23 PM   #12
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Quote:
Originally Posted by jeeply
with said 3.73 gearing could i get away with 31s without any problems
Yes you can run up to 33's, your speedo will be off by 5mph at 60 mph but you'll still have good torque and fuel mileage
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Old 02-21-2012, 02:38 PM   #13
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thanks Jeep Lunatic. now if these dang 30s would wear out.

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