Is it common for LT1 F-Bodys to have loud throwout and pilot bearings after 75000 miles ?

 

I think that would be a negative... But its rule that when your clutch goes its time to replace the throwout bearing and pilot bushing with the new clutch.

 

Before I tore my car down for the new motor, I had installed a Centerforce Dual Friction clutch with a roller pilot bearing....with the roller bearing it was a bit noisy, but before that with the stock clutch at 50,000 miles I could barely hear any noise. The noise was only made in neutral with the clutch out.