Trojan Boat Forum

Dave: Sorry it took so long tp get back to you, but I wanted to get my owner's manual on the boat before I got back to you. According to the 1977 Trojan Tri-cabin owner's manual, your props should be 20x21. Your rpms should be as follows: @2500rpm 14.8 mph @3000 rpm 21.7 mph wide open throttle is 40...

The factory props for that boat is 20X21. I have a 1977 Tri-cabin with 270 hp-350 ci engines. My props are also 20X21. I cruise at 3000 rpm at 18 mph. My guess would be the problem is with your engines. I also boat on the west end of Lake Erie . Hom e port Leamington, Ontario.