Prop choice Valvo penta 5.7 sx

[Boogity2shoes]

Boat weight 4500lb
current prop, 14.8 x 17 3 blade
20-21 feet at water line
max rpm 4800
looking for around 35 mph

 

[alldodge]

Don't know what motor you have but a 4500 lb boat needs at least a V8 and 35 should be no issue with that.

 

[Scott06]

Boat weight 4500lb
current prop, 14.8 x 17 3 blade
20-21 feet at water line
max rpm 4800
looking for around 35 mph

Do you currently get 4800 rpm with 17” pitch 3 blade? Your current wot rpm and mph would be helpful