22.5 foot sun runner with a volvo 290 sp outdrive. built small block. with my 19 pitch 3 blade aluminum prop that is beat to hell, im getting 54mph gps'd. the prop is getting over spun and i still have quiet a bit left on the motor. with the 290 gear ratio (1.66:1 i think) can i expect any decent speeds? id really like to be in the mid to upper 60's, but thats a ways off from what im at now. any suggestions ?
