1990 Bayliner Capri 1850 4.3 Carb Alpha One
New boat to me had a 21 pitch 3 blade prop which was very slow out of the hole, and only running 3900 RPM WOT according to the tach at 40mph. Replaced it with a 17 pitch 4 blade. Much faster out of the hole, and now the tach shows 4100 RPM at 34mph...