trying to find out gear ratio - JeepForum.com

 
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post #1 of 5 Old 01-27-2010, 01:16 PM Thread Starter
nickoidl
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1997 XJ Cherokee 
 
Join Date: Jun 2009
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trying to find out gear ratio

i tried everything we could and we counted the number of teeth on the ring gear and we came up with 39...now what do i have to do with that number to figure out the ratio?

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post #2 of 5 Old 01-27-2010, 01:17 PM
BioTex
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Count the teeth on the pinion, and divide the two.

'85 CJ7, BDS 4" lift, 1" Body lift, 33x12.5, Shrockworks Sliders, 304 V8 with RV cam., T-176, D300, Dana 30, AMC 20.
1986 CJ10-A SD-33 Diesel/727/np208
1971 800B with 345/T-19
06' TJ Rubicon, 4" R.C. springs, BFG/AT 35s M.C. 6" fenders, rockers and surrounds, Currie front & rear adj. tracbars, tattons DC rear shaft, adj. upper - lower CA's. Bilstein 5100's
YJ Buggy Build Current project. Stroker/FI ?
1990 MJ Comanche 4.0L AX15/np231
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post #3 of 5 Old 01-27-2010, 01:21 PM Thread Starter
nickoidl
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thanks! going to do that now
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post #4 of 5 Old 01-27-2010, 01:30 PM
BioTex
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I'm betting you find 11 on the pinon. 3:54's

'85 CJ7, BDS 4" lift, 1" Body lift, 33x12.5, Shrockworks Sliders, 304 V8 with RV cam., T-176, D300, Dana 30, AMC 20.
1986 CJ10-A SD-33 Diesel/727/np208
1971 800B with 345/T-19
06' TJ Rubicon, 4" R.C. springs, BFG/AT 35s M.C. 6" fenders, rockers and surrounds, Currie front & rear adj. tracbars, tattons DC rear shaft, adj. upper - lower CA's. Bilstein 5100's
YJ Buggy Build Current project. Stroker/FI ?
1990 MJ Comanche 4.0L AX15/np231
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post #5 of 5 Old 01-27-2010, 01:39 PM
Coiz
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1979 CJ7 
 
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The ring gear should have both numbers stamped right on it, no need to count.

You can see the 41 11 on mine just after the serial number. 41/11=3.73

Mike
My build thread
1979 CJ7, FI 5.0L Ford, NP435, D300, Full floated D44 Detroit, D30 Detroit EZ Locker.
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