I have a generation 6 454 what are the best heads to upgrade too American eagle.? Merlin.? And a cam combo? Thanks

The motor is in a 24 pantera has stainless marine exhaust

The Edlebrock marine aluminum heads are nice. You can get them in large ovals and they should work great for your application. Merlin irons are a nice option too if you're worried about salt or want to save some coin. What other mods do you have? You probably don't want anything with high CC runners, unless you plan on going pretty radical with it.

What intake are you planning on running? Single plane or dual? The Edlebrock air-gap is a nice option for a 454, if you haven't picked one yet.

Hp500EFI cam, air-gap intake, and heads should be a nice, reliable combo for your motor with your existing exh. manifolds.

Best heads out of the box........... AFR's with CNC porting

The afr heads come with a option for cnc porting? Or is that another company? The motor has a edelbroc intake 2.0 with a 750 holly don't know which plane that is, probly a 2.
Im planning on breaking it down soon for the first time. the boat does 58mph now with a 21 pitch prop, im thinking its only a 330hp but not sure it has a mercruiser flamearrestor but who knows.