1994 Crownline 182. 4.3LX Gen II with 1.81 gear ratio I think. Serial number of drive is 0F339808 if anyone knows for sure the gear ratio. Did some test with various props and for some reason these numbers are either high and low of what I come across with engines and drives with similar as mine. These were all taken on the same day. Calm water. Hardly anyone out. So ride was smooth one end to the other. Props [Alpha 4 14 X 20 Max 5300 RPM 38 MPH @ 4800RPM 2 adults Good hole shot] [High five 13 1/4 x 19P Max 5400RPM 36 MPH @ 4800 RPM 2 adults Awesome hole shot] [High five 13 1/4 X 23P Max 5200 RPM 44 MPH @ 4800 RPM 2 adults Lose of hole shot] I'm looking into getting a 3 blade and looks to me that either a 25 or 27 falls into the range of it. But it doesn't seem right. I figured boats like mine and that power train setup is only good for 21 pitch max. Maybe someone can chime in or has the same thing of what I'm looking for.