Re: 1934 Packard Limousine rear axle

Posted by Owen_Dyneto On 2023/2/3 8:46:57

Since the two shafts (axle and pinion) are interconnected by fixed gearing, you can determine the ratio by rotating one of them a known number of rotations and observing the resultant rotations of the other. Use the search function to find the particulars, the method has been described here many times.

And many differential assemblies have the final ratio stamped somewhere on the case or on a metal tag affixed to the case.