Originally Posted by oconnor marine

My previous boat- my experience with a single 242 formula 88 454 was getting a good set of 1971 large oval port heads "292' castings.Roller tip rockers, a high rise and a matched extreme marine cam. make sure you cam has 112 deg lobe separation so you done get reversion. I put on semituned manifold and 4 inch risers. about 420hp.
If you go with a new set of heads aluminum would be way lighter.....