i used a cam similar to that in my old race car.it is a good choice.But what size boat is it and what impeller are you using because an a impeller would limit your rpm to around 45-4700.So to take full advantage of your power i think you are going to need a b cut.The bbc 396s like to rev that is what i had in my car and i would go throught the traps at 6200rpm.also what is your comp ratio i would want at least 10-1 with that cam too.
My boat now has a cam near those specs and i'm runnin an 11-1 bbf 429 with a b+cut impeller and i'm spinning 52-5300 rpm at around 70-72