in my 69 Camaro (Muncie).
I got stuck in traffic (afternoon Texas heat) so I was using the clutch more than usual in the stop & go traffic. After getting through it and after a short stint on the freeway, at my first stop I noticed a medium to loud clicking noise when the clutch was released. Several years ago, I had a release bearing go out that made noise with the clutch in either position. I just jacked it up to troubleshoot and the clicking sounds like it's coming from inside the bell housing...but only when the clutch is released. When pressed in, it goes away.
I thought I heard a quieter clicking a few times going through a drive through while next to a building (making any sound more noticeable). Anyway, what do you guys think before pulling the transmission? Release bearing?

 

can you put the car up on jack stands and put it into gear while listening under the car?
I agree that it seems like the throw out bearing or maybe the spring fingers that hold it on to the clutch fork broke making it loose when not under pressure.

 

I hate to admit that I haven't repaired it yet but I feel confident it's the release bearing.
I bought a C5 and another motorcycle so I've put the Camaro on the back burner.