Like I posted in a previous thread we just got back into boating after purchasing a 2000 Fountain Fever. The boat is a single engine setup with a 610hp / 620 lbft tq (dyno sheet verified) 510 cubic inch big block.

The question that I have for the opinions is on the prop setup for the boat. The boat has a Bravo XR drive with left hand rotation. The previous owner gave me three props that were all purchased from Herring. The sizes range from a 22, 24 and a labbed 24 stretched to a 25 1/2. I have ran the boat with the 25 1/2 and it is slow outta the hole (seems slow to me) but runs mid 80's with a full tank of full and 4 people with all the stuff for a day on the water. Last weekend I tried the 24 and she comes outta the hole faster, has a strong mid range pull and still ran in the upper 70 to low 80's. The thing that I didn't like with the 24 was that the engine is turning a lot of rpm's at normal speeds to me. Cruising at 50 the engine is turning 4000 rpm.

Do these speeds and descriptions of what each prop is doing seem correct for my boat? How come I see that some boats with smaller HP run larger props? I am very inexperienced when it comes to the propping side of boating and will appreciate any opinions or thoughts.

Thank you!!

Many of us have different props for installing for different types of driving.

When out for a cruise - ie: family fun long run I have a prop for that.

When going out balls to the walls for top speed - I have a prop for that.

When I'm going out on a day where we may have pop up storms and I need to out accelerate the rest of the million boats to and/or out of the next no wake zone. I have that too - believe it or not.

Most performance boat owners have two sets. One for top speed and one for leaisure days.

With your prop for "top speed" how long does it usually take for your boat to come onto plane? After running the 24 prop and can't imagine running the 22 that I have. I would assume that the engine would be screaming at 50mph. Also all of the props that I have are 4 blade props.