I rebuilt and upgraded my original HP 420's. I bored the bottoms .30 over, bought dart heads and RPM Perf Air Gaps with 750 Holley Carbs. My engine builder told me I am around 500HP per engine. Previously, I was running 22 Hydromotive Quad 4's on TRS drives and gettiing 5200 RPM at wide open throttle. Now with the new engines I am only getting 4800 RPM's with the same props. What props should I change to?

24's

Whats up Craig? How are you doing? Should I try 24 Hydromotive's or something else? Remember I have TRS drives.

Any good reference materials to learn about prop selection, websites, etc. I'm willing to do the reading, just having trouble with the technical aspects, and looking for a good baseline [layman] website or book to start.

The best thing that you guys can do is start a thred in the prop section. Julie from Throttle Up and Brett from BBlades are very knowledgeable.

Evan,
I'm doing great....except for this cold weather!!!