Steering question on 1974 20ft CC SF

[Bushwacker]

Originally Posted by fly4navy

Only able to get max 5000 rpm at WOT.
Max speed is 28 its.

Prop is a 12 7/8 X 15 Viper.

My old 1975 115, that was really only about 100 hp at the prop, used to spin an OMC 13 3/4 x 15P 3B SST prop up to 5500 rpm. Your motor is about 120-125 hp at the prop, so I suspect motor is mounted too low if you can't spin that small prop any faster than that. You should be able to clearly see the top of the AV plate above the water when you're up on plane and motor is fully trimmed out to a point just before it starts to cavitate.

All motors are harder to steer when you trim them in towards the transom. You can adjust the trim tab aft of the prop to offset that prop torque effect.