I'm currently spinning a 23" 4 blade Offshore prop( which I just found out is an outboard prop and shouldn't be on my boat. Gotta love my dealer) on my 2000 Stingray 230 SX 454 MAG. I'm running 68-71@5000. I'm gonna pull off the restrictive silencer tips and change to a Bravo 1 four blade. What size should I run to take the best advantage of the xtra HP I hope to gain? Also, what effect does prop diameter have on RPM at WOT?
If possible go to your prop shop and ask to try different props. My prop guy lets us use them obviously in hopes we will buy 1. Try a four blade 1st, I did not like it on my boat.
Bravo 24p should do the trick. Brother in law had a 220SX stingray with the 350/300hp small block in his and it FLEW! Of course that was 2 years and 2 boats ago. Good luck!