Just installed new clutch on my 69 (350) camaro. Now when i let my foot off the clutch it starts to rattle real bad. So when im tryin and switch gears ill let off the clutch pedal and it will rattle. Also when in neutral i let off clutch pedal and it rattles. Not sure if it is pedal or not.

My clutch pedal rattle was fixed by replacing the rubber bumper pad, and making sure the clutch return spring was setup properly so that it pulled the pedal back (eliminating the rattle).

Did you change the throwout bearing? Was it the right one? Are you certain it was installed properly? (The entire fork goes in the groove, the lil spring clips do NOT clip over the edge of the bearing.)

Make sure you have some free play at the top of the pedal travel. Adjust the rod if you don't.