i have a 86 camaro z28 what kind of gears do i have in my rear end

 

Can't answer that question, but I bet your rear-end is over due for a fluid change, so pop the cover, change the fluid and while you are at it, see for yourself.

I am sure if you wait long enough someone will tell you all possible ratios that came out that year for z28, but then again your car is 20 years old. Only you would know what's actually in there.