The motor rebuild was a different block and all internal stuff was different. The old 440 is still sitting in the shed with just the heads off, intake and carb off, they're on the new block. The only reason flywheel and stuff was switched originally was bc we were looking for what the vibration was from. Different motor, flywheel, clutch, bellhousing, etc and it still the exact same symptoms (vibration when in higher rpm's). I may jump on taking parts out Saturday, just because I'm curious on the extent of damage and of course to get your all's help.