07 Glastron 185, 3.0L volvo. Stock prop is aluminum 14 1/4 x 21. Just want to bounce my knowledge off the experts!
So after all the reading here I am guessing that it's 14 1/4 diameter, 21 pitch.
If I go to a 20 pitch, rpm's go up by about 250rpm.
If I go 4 blade, I have to drop 1" diameter...