i have old 206 ls with 454 big block. the engine is new and it is 480hp. and sterndrive is bravo 1 with 1.5 ratio.max rpm is about 5500. which is a good prop for this boat?

Id start with a 23 mirage plus, that's going to be a wild ride!!! 206 with a bbc!! My 242 has the same power and I can spin a 23 to 5100-5200 rpm, I would also try a 21 mirage as well should put it around 5500-5700 rpm..

the boat is good to drive and performance is awesome. the last two years the engine has been 360hp. The next summer, I get big power what is your boat top speed?

Light boat w/480hp, I'd try a 25p Mirage Plus to start. Might even pull a 27 M+