Im thinking of upgrading the cam in my boat. So what I have know is a heavy ass boat with through prop or drive exhaust and i have no clue what would be a good all around cam. I want to boost the performance of the boat, its currently a stock 5.7 but im putting a edelbrock performer intake and carb on it. I know if i go to big on the duration it will suck in water, also the heads are stock so i know i don't want to go a large lift but what can i throw in there to add performance? Any advice or thoughts?