Suppose after changing two clutchs (first one has really bad balance problems) you return to the stock GM clutch. Every time the you changed the clutch your flywheel is surfaced (3 times) and this the original flywheel of your Camaro which made 35.000 miles.

You have no idea about how much machine work is done on your flywheel.

You are happy with your stock clutch but there is a slight vibration in the clutch pedal and since this vibration also exist in neutral you decided to change the flywheel.

At this point is it necessary to change the clutch again? If the current flywheel has some balance problem is it possible its this imbalance is transferred to the current clutch?

 

i would bet that you're problem doesnt lie with the clutch or flywheel, given that both have been serviced repeatadely. i would put my money on either a bent input shaft or a warped flywheel mounting flange. both will cause a vibration that will demolish the clutch and flywheel. if its the mounting flange, you must replace the engine crankshaft, as they are one-piece machined together. if it's the input shaft, any reputable tranny shop can replace it, or you can have the whole tranny rebuilt.