I have a 2006 Tahoe Q7i with a 5.0L mercruiser with alpha one leg. Boat had a 3 blade 19 pitch Aluminium prop. I have replaced it with a 4 blade 14.5” 18 pitch aluminium. Boat plans a bit faster but I have lost 5knots in the top end. 35 not 40 knots at just ended 5k rpm.
I want to go to a Ss...
