Originally Posted by vinniekq2
another thing to consider(worry about) not all machine shops can machine a 427/434.They might try to talk you into a 420.The block should be C N C machined for clearance,not ground
that's not true.
a cnc machine does not know casting thicknesses so what difference does that make?
i recently did one, not on a cnc and also not hand ground. i do block clearancing all the time on a simple manual mill.