A port don't flow 195 cfm's on the engine, that just telling you how restrictive that port is even if the engine displaces 800 cfm which is like a 460 peaking at 6000 ish rpm that only a 100 cfm's a cylinder but your gonna need a fairly big port and a lot of cfm @ 28" for a 460@ 6000 rpm even though the engines only displacing 800 cfm