I'm rather new to this site (actually I read alot, but don't have the expertise to contribute much opinion)...
Anyways, I'm still fine tuning a 2002 Velocity 410 project and wanted to get some more opinion and expertise of what I should be trying for props......any feedback is greatly appreciated!
The boat was originally powered by 575SCi's with XR drives and 32 pitch bravo 4-blade props....... and supposedly hit 89mph from what the previous owner had told me. Upon freshening the motors, we (Mr. HP, Dean Gellner) made a few performance mods (heads, cams and intercoolers) that resulted in 770hp/780tq on the dyno at 5900 rpm with 6.5lbs of boost. The boat now reaches approx. 85-90mph relatively easy, but anything over 4800 rpm's doesn't yield any greater speed (props slipping worse than they should due to dings and tweaks). I'm reluctant to go too big on prop because I don't want to sacriffice low end and ability to easily get on plane (its a bar hopping pleasure boat weighing in at over 9,000lbs dry, not racer).
Ok, so here's my question........ I've gotten some very good guidance from boating and prop experts that feel the 32P 4-blade Bravo will be just fine with a lab finish and others have been telling me that a stock 32P 5-blade maximus will be better. Anybody/friends been through this type of learning curve yet?
How do the 4-Blade and 5-blade props affect bow/stern lift differently and what do the larger Velocity boats react best to?