They apparently don't publish the hp rating on the Indmar 502. They say it is about 415 though. I wouldn't be surprised to find out I was only putting out 350 hp. After all, that is what the impeller says I'm doing.
Not totally accurate. It is telling you that AT 4800 RPM you have 350 HP. That engine may well have 415 hp but at an rpm you cant reach with your current pump/impeller combo.
When I'm done. I'll try the AA to see what it does. I know ST likes the bigger impellers.
J
Keep in mind that running increasing larger impellers = increasing larger load on your engine at ALL rpms. Hope you at least have an oil temp gauge to accurately see how much extra heat that load is creating. A one impeller size increase is probably not too big of a deal, but several sizes bigger, you might want to start thinking about watching your oil temp closely and potentially adding an oil cooler (if you don't already have one).