Prop Selection

[steplift20]

I also have a 78 with a 1988 150 Mercury and to me the best prop is 15 X 17 aluminum
I had a 13 X 19 s.s. And the would give me cavitation I'm very happy with my correct prop I think you will be too

[Duke01]

Thanks again for the input. I need to make a correction to my existing prop number that I noted earlier. It is a 48-78120-19 (not 18). I think my first step is to purchase an aluminum replacement (matching existing) and then a test on the water with a gps to obtain an accurate speed reading. I will follow-up with you all, but it will not be until July since I have a list of projects to complete before launch.

Thanks, Duke