I'm in the process of removing my transmission and clutch to diagnose the car shaking violently when the clutch is engaged and decided to replace the flywheel to rule it out as well as send the clutch back to the manufacturer to inspect it for defects.

I'm thinking of buying a oe replacement flywheel from oreilly for about 120 bucks. Is it a bad idea or good idea? Vehicle is Procharged ls1 and has a stage 3 clutch

 

What rpm are you trying to take off at? Unless something is severely glazed the flywheel shouldn't cause that much chatter. The Oreilly's cast flywheel is a bad idea. I would not recommend that.

 

I've got a SPEC steel flywheel (23#) that's as-new I can sell you for $175 plus shipping. New they're $260-ish... E-mail me for pix if interested.