Thanks for the great article showcasing some remarkable talent. There's always a way to get something done, but some people have a budget and not a bank. I'm one. Just another old retired guy building hot rods. The author of this thread may be in the same catagory. I looked diligently back thru the Edelbrock Victor info sheets and there it was. Check piston to valve clearance AND valve to cylinder bore clearances. I missed it. My fault. No funds to go back on it now as I can skate by on this one,w/ .030" radial clearance.Luckily, I opted to include nitrous oriented clearances and top rings to accomodate safely a small amount of spray in my build. I have to "run what I brung" at this point. I would not build another engine again to make more power w/Victor heads.Lesson learned. Bill