is there such thing as 8.25 geared to 307 stock? im looking at a pair of or axles and i just want the 8.25 can it really be geared that high from the factory?

 

The 5 speed manual XJ's are geared 307

 

so mine is 307? huh this whole time i thought i was 355, what is an exact way to tell ? and if mine is 307s good because i wont have to worry much when i swap it out

 

If its a 5 speed then yea you have the 307 if it's a 5 speed 2wd then you have an 8.25 with 307 gears

 

There are tags on either or both differential housings.

 

There were tags at one time.

RSWiser

 

if its a 6 cyl motor, and manual transmission... yup 307's BUT!!!!!

if its a 4 Cyl motor, and manual transmission... Its gonna be 4.10's...

just another fun fact for ya on the 8.25... No Cherokee running a factory 8.25 with the factory gears came with 3.73's... If you find an 8.25 out of an XJ with 3.73's then they are aftermarket gears

for checking the gear ratio one somewhat easy yet very reliable way is to jack up the wheels, disconnect the driveshaft, rotate one wheel, and count how many revolutions the pinion yoke/flange makes 3turns is 3.07 gears, 3.5 is 3.55 gears, 4 is 4.10 gears.

 

Shoot Jeep and email with your vin # and it will tell you what the stock ratio was

 

The gear ratio is stamped in the side of the ring gear.

 

FYI, some automatic tjs came with 3.07's weird huh?