Hi guys
I have 1991 Larson All American 170 with 4.3 Mercruiser AlphaOne 190HP
I have 14.5 x 19pitch prop. When running WOT test, I max out at about 42mph and tachometer is showing 6000 rpm but it should be between 4400 and 48000.
At first I was thinking I might need to try a different size prop...
