I have gallons of glyptal at work, should i just tank the block or blast the lifter gallery. this block is a little rusty so i was planning on blasting it anyway. Pat i know you have built a pile of 427t engines, so how much of the pan rail do i have to mil off for the 4.5 crank. or should i just wait till i have the rotating assembly together and check the clearance then. machining is no problem, I have a mill at work and a whole winter to work on it.