[resiw33]

I have a 23 sceptre IB with orginal 305 ( 228 hp ) cruise at 2800 18kt 9gph burn , wot is 3900 for this motor and will do 23kt. 16x15 prop. not sure of cup. This is with 3 people moderate load. So this is inline with orginal posters specs. The wheel is smaller than stock and what the 350 guys run but I dont have the hp to turn one. If the bottom was perfect light load prop true I could add 2 kt to the numbers. Best top speed was 30mph on a perfect day running with the current 4000 rpm witch is max wot rpm for the motor.