first does anyone know what gear ratios 1975-1985 dodge 3/4 tons came with from the factory? second, do i need to jack up both wheels to figure out the gear ratio of my differentials. thanks guys. i'm gonna have lots more drivetrain/axle swapping questions.
there should be a tag on either rear / standard gear ratios are 3.55-3.91-4.10-4.56 / most are 4.10,s / pop the hood and look up!!! there should be an option sticker stuck to the hood on the drivers side front edge with all the info you need / if not either one of these jack it up and start spinning and count the drive shaft revolutions