prop size for 92 liberator

[signmaster]

i presantly have a 4.25x 20 pitch prop on my 92 liberator, and i am getting up to 42-4300 rpm wide open whith two adults and a child at about 52-53 mph i have the 7.4 liter 330 hp motor with the king cobra drive, what would be the best size prop to use in this application, most of my boating is cruising to bars and such, [not much tubing or skiing] ? i am feeling like a 17 pitch would work but maybe thats too small?

 

[Bondo]

Re: prop size for 92 liberator

Ayuh,... I'd think a 19" prop oughta put it right in it's sweet spot....