I've got a '73 z28, 350, just replaced clutch pressure plate, throw out bearing, and flywheel, now when depressing clutch with the engine on, a loud clicking noise is heard. Any help out there would be appreciated!!

Whenever you replace a clutch you usually have to adjust it a few hundred miles down the odometer. The fuzzies wear off.

Sounds like the pressure plate throw out bearing combo, is an incorrect match.
Depending on the height of the P / plate you may need a short or long throwout bearing.
What happens is that you are over depressing the fingers of the P / plate.
Sorry but it sounds like you have yank her out again.

Just another thought, I have done this also so don't feel like an idiot, but the disc can only go in one way, it has a fly wheel side and if it is in backwards, the centre of the disc hits the flywheel bolts, hence the loud clicking noise,
Sorry but you still haver to yank her out again.

Just another thought, I have done this also so don't feel like an idiot, but the disc can only go in one way, it has a fly wheel side and if it is in backwards, the centre of the disc hits the flywheel bolts, hence the loud clicking noise,
Sorry but you still haver to yank her out again.