1966 Barracuda 273 Died!!! HELP

There is jack holding the distributor in the block except maybe an O ring. If the T?C failed, you will have no cam movement. Even if the pump seized, the hex would just strip or shear the oil pump shaft, but the cam would still turn the large helical gear that the dizzy sits in with its flat tang. Hit the side of the base of the distributor with a chisel at an angle like your trying to unscrew it, it should turn and break free. I had a Honda camshaft break right in the middle, no oil to bearing and it seized, breaking the cam from the oil pump drive.