Hey guys,
I have a 1988 SeaRay Seville 18.5 foot, 2100lb dry, bowrider. Stock it came with 175hp 4.3 v6. The alpha outdrive has a 1.84 ratio to it. I have increased the power to somewhere around 235hp with many modifications recently and now I overrev the 13.75 x 21 prop. I have tried 14x23...
