2gm

Hi, I'm looking to replace our exisiting 3 blade prop with a 2 blade. I think the 3 blade is too small as the boat barely powers at 4 3/4 knots. No tachometer on the boat though. Anyone have this boat and 2 cylinder diesel with a gear ratio of 2.62? Is hull speed about 5.5 knots? Thanks, David

Strong runner taken from a clients E35-2. He put in a 3GM for more speed. This diesel is ready to go but has no panel. My mechanic installed it new about 10 yrs ago, maintained it yearly and pulled it for the new one. Could use new mounts and a clean up. It is the 16 hp version with 2:1...