Ok, I know this has question has been beat to death….. HP Vs the Bravo one. I have a 251 Checkmate That will be getting a new motor. I am looking at the two ZZ motors from GM 454 or the 502. The 454 is rated at 440 the 502 is 500. My bravo is a 1990. Will it last behind the 502. The 502 is only $300 more than the 454. Should I take the 60hp loss from the 454 for a safety cushion from the 500hp “line drawn in the sand” max for a Bravo? Or go for the 502 and the added HP? Thanks in advance for your input…..

I think you'll be fine even with the 502.The 251 is a light boat and that is right at the bravo's limit.As with any boat be sensable coming on plane as well as airing it out.

It'll live behind the 502. Unfortinatly, neither of those motors are for a marine application. Keep shopping.

I agree, dont put a car motor in a boat, you will be sorry.

I've got a complete HP 500 for 13.5k if you are interested.

My stock bravo lasted almost 2 seasons behind procharged 502(approx 650 hp) w/26 pitch prop in baja 272. Went from 6 psi boost to 8-10,was fine,added lightning headers and jumped up to 28 pitch,broke the first time i got on it with that set up,Smitty