txbabe_090503

Hey jw if you could tell me how i can quickly and easily figure out what gear ratio my rear end is my rear end is out in my truck and i cant get a new one bc i have no idea what the gear ratio is and every time i call to see if someone has a rearend for my truck thats what they ask me. i drive a 1994 4x4 GMC yukon with a 6 inch lift on it. One problem i have is that this thing was originally a deisel and now has a 350 in it so i don't know what else has been modified b4 i got it

msydow

jack up the rearend and rotate the pinion. count the revolutions of the pinion to one revolution of the tire.