What's the Difference?

This evening I finished assembling the 10 bolt GM differential for my '72 GMC pickup. I was having a tolerance problem this weekend while working on reassembling it. The pinion pin did not seem to have enough space to slide between the end of the axles. The solution turned out to be as simple as removing some grease from between the thrust washers and gears. This potential solution came to me while I was driving home from school today. Glad it worked. Who would have thought a little grease would make that much of a difference. The tolerances on these parts were definitely tight.

I have not filled the diff case with fluid. I will wait and do that after the diff has been bolted to the trailing arms. Oh yeah, I also need to touch up the paint on the differential. I scratched it up a bit, flipping the diff end over end a few times while it was up on jack stands. Again, it is a minor thing. I am calling it done.

Next Step? Assembling the rear suspension I believe.