Not sure I under stand the question? The .520 cam that your talking about is no where near mild. I use them and they run circles around many grinds but they are not easy on parts. As far as running those numbers we often use hyd grinds with 3.73 gears in 10 to 1 all iron sb mopars that get street driven many miles on 91 octane pump gas.These are not big HP deals just mild stuff. Not tricks needed for that application.A big block is overkill IMO.