I must be a terrible communicator. I have a 383 with the pistons stuck on the rods, in the cylinders, crank is still installed. I'll call it a shortblock. I want to tear the engine down while saving the rods, crank, and block. Last time I tried this on a 440, the pins were seized in the pistons, and the rods wouldn't pivot on the pins, which will not allow the piston to be pushed/driven up into the cylinders. I bent up a couple of rods and nicked the crank. Thought maybe someone on here would have the answer, short of hot-wrenching the rods. Anyone?? Bueller?? Thanks