Re: 25 O/L with 600-650 hp
 

I'l take your words as a request and promise I will film my 25 OL at 70 mph showing both the livorsi speedo and the GPS... My first launch should happen in May... I would'nt be surprise to break the 72 mph mark at that time of the year.

Re: 25 O/L with 600-650 hp
 

i will do the same and i will be in the water in april. do you want to put your money where your mouth is.lol

Re: 25 O/L with 600-650 hp
 

What is your avatar? Is'nt that Stecz20 dropping his pants?

Re: 25 O/L with 600-650 hp
 

My 288 runs 67-69 GPS w/ full 110 gallons of fuel and 4 people,, will run 70-71 w/ half fuel and 2 people,, lets hit the river this year and see who pulls who ??? Sounds like we should be dead even... :D

Re: 25 O/L with 600-650 hp
 

A 23 pitch prop, 5000 RpM, 11% slip which is probably a bit optimistic would get you approx. 64.6 MPH. Even if you had the prop re-pitched to 25 pitch, 11% slip would get you approx. 70 MPH. 15% slip is more like it in a single engine V-bottom, that would get you 67MPH with the 25 pitch. So anyone who says they're running 70 with a 23 pitch prop, 496ho would have to turn about 5500 RPM which I have never heard of. Just my $.02.

Re: 25 O/L with 600-650 hp
 

My baja ran around 11% prop slip,, my 288 runs around 16%

But your right,, 23P @ 5150 @ 10% prop slip is 67.5

Re: 25 O/L with 600-650 hp
 

Yes, just a request....as it would seem your boat is quite special from other 25's. I've heard and seen of this only once in production boats, I have a friend with a 35' Cafe w/ 502mags. His boat runs a full 5mph faster than other models with the same power. But his boat was set up from the factory with a much higher x than standard. Of course this causes other problems, getting on plane and it tends to be harder on the Bravo's too.
It would be interesting to see what the Livorsi speedo reads, I've seen them read 3 mph high to sometimes lower than GPS readings.