Prop Specs ONLY

[inair]

1991 Supra Sunsport
PCM Ford 351 factory 230 HP. Currently 840hrs HP?
Tranny 1.123:1
Acme 668 4 Blade, 12.5X15.5 CNC .150 cup

Performance/Usage
4000 RPM WOT Two people in boat no ballast Full Gas Tank 43 MPH unverified

Boat is used primarily for boarding with up to 450lb of ballast and skiing.
Pulls very strong for skiing and boarding. Unknown how it would do with surf ballast.
The reason I changed props was that I couldn't seem to get the old one balanced and had a lot of vibration.
Did my research before buying. Learned a lot about prop theory but ended up buying a prop that was recommended by Nettles Props instead of the the one my calculation said was right. Prop theory says a 4 blade is less efficient than a 3 blade but easier to keep in balance. Also prop theory says I'm over propped (too much pitch and cup). But I'm happy with it so far. If I tried surfing I don't know but I hope to find out!