hows it going guys im a new member my names henry from long island.. I resently picked up a 96 cherokee country edition i was told it has the wood grain interior.. but anyway the rear started to make a bad vibration and humm. so i was going to replace the bearings but it dosent have the 8 mm bolt it has a slide pin that i cant get out..soo i was going to replace the whole rear but im not sure if i have 3.55 or 3.73 gears and if i mix match the front to back will it work? thanks for reading and i would be greatful for some help

 

if you have an auto more than likely you have 3.55 but do double check b4 you go get something and it doesnt work. And no you cannot run two different gears sets. If you put it into 4wd then it will tear up the transfercase. So make sure you have the right gear set first and welcome to CF.

 

As stated above if you have an auto you have 3.55's and the only way youd have 3.73's on an auto is if you had the up country pakage, look to see if you have tow hooks on the front and skid plates and the rear axle should be a D35. If not then 3.55's. Also on the passenger side axle tube there should be a paper tag stuck to the axle and if you lucky it should still be there with the gear ration printed on it.

 

Do the math.
Count the ring gear teeth, and then the pinion teeth and divide the small number into the big number. Instant ratio.
Its probably stamped on the ring gear someplace too.

 

thanks alot guys i will check this out tomorrow and thanks again

 

alright so there is no sticker on the rear,,, somone had said the check the dif cover and when i looked at that i sat it had the date 11-18-87 on it so not that thru me for a loop to bc 373 gears werent out in 87 so i might have a 2.55 what else can i do to check the gearing

 

the numbers for the gears are on the ring gear it will be displayed like this {11-44 ] the numbers will be different for differenr ratios just divide the smaller number into the larger and thats your ratio id be more worried where the bolt went that holds the pin in for the spiders first