WOT speed on a '83 20' SF w/200

[Bigshrimpin]

I tried a 21" merc offshore 4 blade prop. It was just too much prop . . . My motor could only turn the prop 5000rpm. 19 mirage plus spins 5700/5800rpm with the motor trimmed.

I think you'll see 50+ once you raise the motor and drop down to a 19 pitch.