How do i check what gear ratio im running. i bought the truck used and dont think its stock...

 

well you can jack up the rear, have both tires turn the same amout for 1 revolution and count the number of times the driveshaft turns and round it to the nearest possible offering or take off the cover, count teeth on ring and pinion and do the math, i think you divide one into the other. its been years since ive done that.