rear gear ratio

bwtucker · **Posted:** Fri Jul 08, 2011 12:47 am

I did search, online and here. What gears are in the rear diffs of the 02 KJs?

Xodius · **Posted:** Fri Jul 08, 2011 1:13 am

Depends. Mine came with 3.73 but I paid for the upgrade from factory. There should be a small metal tag on the dif cover. If not on back perhaps on front. Hope the helps.

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Fulltimer · **Posted:** Fri Jul 08, 2011 4:06 am

If you have the V-6 it should be the 3.73. If you have the 4 cylinder it would be 4.10.

Terry

Pippobug · **Posted:** Fri Jul 08, 2011 5:28 am

[quote="Xodius"] There should be a small metal tag on the dif cover. If not on back perhaps on front.

Hi,
Would that indicate if you have 4.10 Gear in both axels?
I have a CRD 2.5 2003 and on my front diff found a tag stating, if I remember correctly, 4.10 !!
Fil.

bwtucker · **Posted:** Fri Jul 08, 2011 11:37 am

found the tag after wiping the mud off. they are 3.73. Thanks for the help.

bugnout · **Posted:** Fri Jul 08, 2011 3:22 pm

Pippobug wrote:

Hi,
Would that indicate if you have 4.10 Gear in both axels?
I have a CRD 2.5 2003 and on my front diff found a tag stating, if I remember correctly, 4.10 !!
Fil.

Unless someone purposely put different gears in, you should have the same gear ratios in front and back. If they did you would tear the vehicle apart when you tried to use 4 wheel drive

Pippobug · **Posted:** Mon Jul 11, 2011 4:31 am

bugnout wrote:

Pippobug wrote:

Hi,
Would that indicate if you have 4.10 Gear in both axels?
I have a CRD 2.5 2003 and on my front diff found a tag stating, if I remember correctly, 4.10 !!
Fil.

Unless someone purposely put different gears in, you should have the same gear ratios in front and back. If they did you would tear the vehicle apart when you tried to use 4 wheel drive

Hi,

I agree with you & I don't have any issue when using 4x4, still I am trying to find out what is my ratio in my axel. Any other way of finding out?

Fil.

bugnout · **Posted:** Mon Jul 11, 2011 10:45 am

I found the specs on line at http://www.automobile-catalog.com/auta_details1.php

Looks like your KJ has 4.11 gear ratio

Pippobug · **Posted:** Mon Jul 11, 2011 12:09 pm

bugnout wrote:

I found the specs on line at http://www.automobile-catalog.com/auta_details1.php

Looks like your KJ has 4.11 gear ratio

Bugnout,

does this mean I have 4.10s or mine are 4.11s are different?
And just out of curiosity would I be able then to fit 265/75R16 without loosing to much power?

Fil.

bugnout · **Posted:** Mon Jul 11, 2011 2:42 pm

Pippobug wrote:

bugnout wrote:

I found the specs on line at http://www.automobile-catalog.com/auta_details1.php

Looks like your KJ has 4.11 gear ratio

does this mean I have 4.10s or mine are 4.11s are different?
And just out of curiosity would I be able then to fit 265/75R16 without loosing to much power?

Fil.

When I changed my gears, the front gears from Dana Spicer were spec'd at 4.10, the rear gears from Superior Gear were spec'd at 4.11. I asked the same question. the answer I got was there is so little difference between 4.10 and 4.11 they are essentially the same.

I think 4.10 is your only choice, the only available gears are 3.73 and 4.10. If your willing to invest in a steel diff from JBA, then you get 4.56, 4.88 and higher. Can't tell you if you'd loose too much power, but my 2.8L moves 32" tires pretty well. I'm running 235x85R16's.

sota · **Joined:** Fri Aug 07, 2009 7:44 pm **Posts:** 379

I got 3.55's... :paranoid:

infernicus · **Posted:** Mon Jul 11, 2011 6:47 pm

sota wrote:

I got 3.55's... :paranoid:

The stateside gasser 6spd manuals came with 3.55's.

bugnout · **Posted:** Mon Jul 11, 2011 7:45 pm

Yup, I forgot about the manuals. CRD's in the NA only came with auto's

Dje Ryu · **Posted:** Mon Jul 11, 2011 9:01 pm

Pippobug wrote:

bugnout wrote:

I found the specs on line at http://www.automobile-catalog.com/auta_details1.php

Looks like your KJ has 4.11 gear ratio

Bugnout,

does this mean I have 4.10s or mine are 4.11s are different?
And just out of curiosity would I be able then to fit 265/75R16 without loosing to much power?

Fil.

With the diesel and 4.11 gears, you could probably run 33's and not notice much loss of power.

tjkj2002 · **Posted:** Mon Jul 11, 2011 11:52 pm

No 4.11's for the KJ.4.09's for the front and 4.10's for the rear is the lowest combo using OEM diffs.

Gas 2.4 KJ,auto or manual--4.10's
Gas 3.7 KJ,auto--3.73's
Gas 3.7 KJ,5 speed manual--3.73's
Gas 3.7 KJ,6 speed manual--3.55's
US CRD(auto only)--3.73's
Export CRD with 2.8,auto--3.73's
Export CRD with 6 speed manual--?
Export CRD with 2.5,auto or manual--4.10's

Pippobug · **Posted:** Tue Jul 12, 2011 4:42 am

Thank you to all for you help & information.

Fil.

rear gear ratio

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