Here is one I recently did....you'll notice the chamfer on the inner crank throws. This must be done to clear some block casting in those areas. You can also gring the block to help clearance this. It is also possible to put a 440 crank in with no or minimal crank work, but a lot of grinding in the upper saddle areas. A poor mans stroker is possible this way, but its not the best way in my opinion. I did one with a cast 440 crank to see what it involved, and didnt care for it much myself.