.220 huh... lol the comp cams that summit sells are .420-.460 lift... but like the rest of the world they dont realize that slants dont have 1.5 rockers so its less valve lift...
well for a .500 valve lift your gonna need to be in the 240-250 range in duration @ .050... so it will lope hard and idle @ 1200 lol... also you need alot of compression and head work to bother with that...