motors are 454 .30 over srp mini dome pistons 9-1 compression with 118cc merlin lg oval port heads crane 134242# .50 duration 226int236exh rpm air gap intakes and 500hp carbs. was wondering if i would have any water reversion with eddie marine manifolds and stainless risors they call it there 511 kit for bravo

You will be fine with them they are a nice system .

+1 here. I had pretty much the same combination on a prior engine with no problems. I even had Captain Call.