ive seen where people have said that ther is a sticker either under the hood or in the glove box and my truck has niether, so i was wondering how i could find the differential gear ratio in my truck?

 

Id like to know also

 

Pull the cover off and clean the ring gear. It should be stamped on there.

 

Get both rear wheels off the ground and use jack stands so truck don't fall on you.




If you turn one tire & the other one either stays still while the pinion rotates, or the other one rotates backward while the pinion stays still, or something in between, then you've got an open diff or a very weak LSD (like a Trac-Lok with too many miles on it). In this case, you need to secure one wheel (perhaps by lowering the tire onto the ground), then you can figure your gear ratio by rotating the airborne tire TWO full rotations and counting the number of times the pinion rotates. 3.73 turns means 3.73 gears. If you only rotate the tire once, then 1.865 turns means 3.73 gears.
If you turn one tire & the other one turns the same number of turns in the same direction, then you've got a good LSD or locker. In this case, you can just rotate the tires ONE full rotation and figure your gear ratio by counting the number of times your pinion rotates. 3.73 turns means 3.73 gears

 

or check and see if there is a metal tag on the cover held in by 2 bolts