Valve / Piston Clearance in 383

For cams, I am likin the Howards stuff. They have a lot more lift than most others in their comparable duration range. Check this one out.
http://www.summitracing.com/parts/hrs-721201-08/overview/

Yeah, you are probably right. Guy who built the bottom end said not to go with anything that has more the .520 lift so i just took his word as gospel.