How can I find the factory pinion gear depth setting. I have a 1964 Chevy C-10, 3/4 ton, 12 bolt, 18 spline axel rearend. I would like to know the fatory depth setting so I can calculate what shims to start out with to setup the pinion depth for a new carrier, ring, and pinion. The original pinon does not have a depth marked on it. The new pinion has a depth of 2.753 markes on it. Any one got any ideas on how to find the original depth or what shim pack to start with.
