i'm with brian on this. i have a set with the pushrods moved and the ports raised so high we had to use intake spacers to make a victor fit and they only flow
[email protected]. Don't get me wrong, if you have the talent to do this with a stock pushrod location that would be great, but unless your cnc machine can also insert epoxy in the port floor, the mid lift numbers are not going to be very good even if they do flow 400 at the peak.