'87 Kevlar Gun prop question
 

Need a starting point on prop selection. Currently running 16.5 x 28 three blade on 3a (big shaft). Cruise speed kinda sucks. Engines are 598s making 785 each. Any suggestions? Thanks,Bob

I had a 1984 flatdeck with PSI supercharged 572's running 1.5:1 ratio, #3A drives. I ran 18x30 4bbl's for the longest time and then switched to a set of 18x30 5bbl's.
In my opinion, you need more diameter and either 4 or 5 bbl's.

Gary

Thanks RMPRam, When you switched from 4 to 5 blade,what was the result? Did that lift the stern ? Cruise and top end #s change a lot? Anybody else got any suggestions for an old Cig ?

Mine is an '88 kevlar Gun with just about the same power as yours...but has #6's. I'm running 4 blade 16.5 X 29P and turn them @6000

I only used the 5bbl's once and then sold the boat. I'm sorry that I don't have more info. to give you. The boat was a side-by-side on 35" centers and I was turning the props outward.