it sounds like its coming from the rear end

 

well i would say its safe to assume that whoever put in the gears f'd something up cause it shouldn't do that. I don't understand why it would only do it in reverse though if its the gears. but then again i dont know very much about auto trannies or rear ends in general.

 

last night i got to thinking about it and one of my buddies has a Z28 and his did the name thing...im fairly certain that i broke a tranny mount