i just recently baught a 99 cherokee classic and put a 3" lift in it but i dont know much about it actually(i am a chevy guy=) i know it has the 4.0 straight six and its got hella power and for 4x4 i have 2wd,4part time, 4fulltime, n and 4low. but i dont know how to find out which axle i have...which gears i have...which transfercase or even tranny i have.....anyone know how to find out?????vin number maybe??

 

if you have the option of full time 4wd then you have the np242. the front axle is a dana 30 and the back is more than likely a chryco 8.25 or the dana 35 but i dont think the 35 was still around in 99 but i could be wrong.

 

here is a website that will show you all the dana rear ends.
http://www.coloradok5.com/axleguide.shtml

 

cool man thanks, how do u suposse i go about find out my gear ratio, im thinking it is a chr 8.25 rear

 

oh and what the hell is the difefrence between fulltime and part time 4wd...please explain lol jeeps confuse me, i came from a k5 blazer to a cherokee so im really lost when it comes to mopar lol

 

for gear ration you can jack up the back end put the jeep in neutral and mark the drive shaft and have some one turn the back tire while you count the time the drive shaft goes around for one full rotation of the tire. and as far as full time and part time i have never had a 242 all of my heeps have had the 231 i believe the only difference is that with the full time you can throw it in and go and not have to worry about binding on anything. but like i said the 242 im not familiar with.

 

hey i work at a jeep dealership if you wont to give me your vin i can tell you everything and anything you want to know about it. i have access to dealerconnect. if anyone wants to know anything like this just send me private message and ill let you know

 

http://jeep.avtograd.ru/VIN/vin_en.asp

vin decoder.

 

i have a 2001 and i have a dana 35 rear

 

your gear ratio most likely is going to be 3.55 no matter which axle you have

 

you have the NP242 and i believe the trans is a AW4

 

thanks for clearing that up i thought they got rid of it and wen to just the 8.25

 

hey thanks for the help guys, found out i do have a 8.25 and 3.55 gears and a 242.....that helps alot!! now im gonna go buy a lockright locker from rockyroad outfitters for 310$ thats a good price isnt it??

 

I'm not sure what the 99's come with, but that lockright you are looking at is 27 spline. There are 27 and 29 spline 8.25's. If you have the 29, that will not work.

If you have a 29 spline 8.25, you are pretty much limited to selectable lockers or the powertrax no slip rear locker. It's $400 or so. Pretty much the same as the lockright but supposed to be quieter.

 

yeah you should have a 29 spline..