I have a beautiful 1987 2850 Bayliner command bridge with a single 7.5 (460 Ford) OMC. My prop was lost "don't ask". I can't remember what size it was. I can only reach 3000 rpm's with the new prop which is 15.5 X 15. I should reach 4400 to 4800 . The engine runs great and I have checked...
