View Full Version : Axle gear ratio
Dream Machine2001xj
03-05-2014, 08:40 AM
How can i tell what axles and the gear ratio and spline my jeep has i have a 2001 xj 4.0l automatic with np231 transfercase
4.3LXJ
03-05-2014, 09:13 AM
Axle ratio unless someone has changed it is 3.55. Is there a flat spot on the bottom looking at the rear of the rear diff? Do you have ABS brakes?
XJ Wheeler
03-05-2014, 11:20 AM
If you want to, post a pic of that pumpkin and we'll have no problem telling you the axle and spline count.
Sent via messenger pigeon - i talk, he types.
Dream Machine2001xj
03-05-2014, 01:02 PM
I will post a pic of my axle in a lil bit it does not have abs
Brasscatz
03-05-2014, 01:20 PM
No abs and a 2001 automatic, safe bet you have a 29 spline Chrysler 8.25 with 3:55 gearing. Fun part will be opening it up to see if you have limited slip ;)
Sent from my Samsung Galaxy S4 because my microwave couldn't do it
4.3LXJ
03-05-2014, 01:33 PM
Yup
Dream Machine2001xj
03-05-2014, 03:10 PM
The first 2 pics are of my rear diff the 3rd puc is the front diff
Dream Machine2001xj
03-05-2014, 03:29 PM
I posted pics let me know thank you.
Brasscatz
03-05-2014, 03:41 PM
Yep, 8.25 rear, d30 front
Sent from my Samsung Galaxy S4 because my microwave couldn't do it
XJ Wheeler
03-05-2014, 04:04 PM
Like Jim said, its an 8.25. And if its original it will be the 29 spline.
Sent via messenger pigeon - i talk, he types.
Dream Machine2001xj
03-05-2014, 04:33 PM
So i want to get a good sye kit and driveshaft and lockers what are good brands
Dream Machine2001xj
03-05-2014, 04:33 PM
Or i should say a good setup
4.3LXJ
03-05-2014, 04:40 PM
Lokka.com for the cheapest lunch box locker
Dream Machine2001xj
03-05-2014, 04:41 PM
Ive looked areound and rugged ridge has a sye kit and driveshaft for around 400 is that a good brandand price
Dream Machine2001xj
03-05-2014, 04:46 PM
Do u use a lokka
4.3LXJ
03-05-2014, 05:04 PM
I have two of them and one for my son's TJ
07Negative
03-05-2014, 05:06 PM
Advance Adapters for SYE or even Tera Flex. Lotta folks go with Tom Woods drive shafts.
You gotta decide on the style locker you want.
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