My boat is a Bayliner 2556 7.4 carbed with a Bravo 2 ratio of 2.20. The 23 pitch is the perfect prop for my boat. I run 40 miles each way to fish with a fairly heavy load. This prop allows me to cruise at 24 mph @ 3600 rpm and 28 mph @ 3800 rpm. This is my second Solas Titan and they are a real bargain.