Ok I dropped my 408 in. It is bolted up to a tko 600 trans. Everything is new. New clutch, flywheel, pilot bearing, to bearing, clutch fork. I bought all of the trans parts from the same company so I know everything is made to work together. I don't remember the name of the clutch but it was made to support 600 hp. So I fire the motor up, it sounds great. I take it for a very short test drive to the end of the street. Everything works fine. I babied it and got to 4th gear. I come back, park the car for a while. Start the car back up. I go to pull out of my driveway which is steep. I put the clutch in and pull out very easy, and I start hearing this rapping or clanking noise. I pull the car back down. I go to start the car again, and now the starter is spining the motor slower. I start the car, and I hear the noise at idle. I rev the car and it get louder with the higher rpm. The car still drives though. I really dont think its the motor making noise. It sounds like something in the bell housing. I thought it could be the piece of tin that goes between the block and the trans, but thats bolts in. I dont think that could move. Any ideas? If something major was broke, would the car still drive?