You can pull the top off the engine.
But I would recommend pulling the engine and trans together...
Then when it's on the engine hoist, drop the oil pan and main bearing caps. Loosen and remove any pistons and rods that you can access.
If you then can't free up the crank, then remove the rest of the pistons and rods. If they are stuck, then break them with a hammer so you just have the rods holding you back...
Try to remove the trans and crank together if you can't get it to spin, then unbolt the converter and crank when you drop it down....
