Please Help! Part 2
 

As I found out in my first thread https://camaroforums.com/m_252701/mpage_1/key_/tm.htm I didn't know what was going on and narrowed it down to the differential. Well I got it open and besides some dirty oil, I don't see anything wrong...I'll post some pictures if someone can point me to a good site for that as maybe I'm missing something. idk I'm currently cleaning it as best as I can to get it clean and makes sure I didnt miss anything. and

If its not the differential what could it be?

How do I tell my gear ratio and if I have an LSD?

Thanks for everything guys!