We dyno tested a 508 hot street engine the other day. This is a 10:1 pump gas engine with Trick Flow 240 heads, ported Victor intake, modest hyd roller cam and a 850 double pumper. This engine ran great, nice and smooth with no leaks. Made 615 hp and 645 torque so it will be a handful on the street. Going in a 1970 RoadRunner with a four speed.