Steve Dulcich of Engine Masters has dynoed this cam in a 5.9 Magnum (the 380 horse 360 grind) in several 360 Magnums.( it usually gets7"-8, inches of vacuum , at a 1000 rpm idle, in a 360....) I would call Oregon Cams, ask for something in the 200-210 @ .050 zone, with a 110-112 lobe center, around .460"-.480 lift. (remember it is on a 1.6 rocker ratio, upgrade those silly stock valve springs with Hughes 1110 , or equivalent) Best of luck