I have a perfect cam I get ground by comp for marine applications, for 509's, where the 502 Hp 500 engines I turn into 509's. Its a Comp Hi-lift hyd roller, .647 lift, 248 at .050, 112 lobe sep. 509 inch, mildly ported Dart Iron Eagle 308cc heads, Dart intake, modified 830 carb, make 670hp and 640 ft/lbs on pump gas. This cam also works very well for street engines. Idles well, and makes good power.
Frank