Different boat...but I am running a Mirage 21 with the same motor and outdrive.

Last week 4 people on board 30 gals of gas, bimini top up, and flat water...4800 rpm doing 48 mph.

I don't know if I would of pulled anymore rpm....when the boat was naked and no windshield it would pull 5200 rpm.

The prop is stock and not worked over. Maybe when I pull the boat at the end of summer I will send the prop in and have some work done and then see what happens.

Right now it seems to cruise well and the hole shot is awesome .

Thanks again for all of the replies. The prop use for the test run was a 4 blade 21p bravo stainless. I am planning to drop to a 3 blade so am not sure how may extra rpms will be gained from that end. Islandtrader if your motor is a 383 stroker also it would make sense that my tsunami is probably a little heavier and would have to be a 19P. The 17P Mirage seems to be pretty common also, but thinking the 50 extra hp would put me higher in rpms pushing the same prop.