66 c10 first timer build

[williamsboys]

Originally Posted by McMurphy

Ummm yeah,
I pulled my rear diff cover off and looked, but I did not see any numbers.
But then, I cannot say I know what ring gears are either
All I know for sure at this point is that I have a posi rear end.

Now I need to get new gear oil, and figure out how to refill it.

yea im sure i will have the same response when i open mine. Almost everything ive done and will be doing is all my first time, i mean we also have a 59 chevy truck but havent dove to deep in it like i am with the 66. I hope mine is a posi, but my luck it wont be. so you didnt see the numbers they were talking about huh? well if you havent already closed yours back up and you find them let me know, i should be jumping into mine this weekend.