How fast does you're Boat go.I just bought a 99 260 legend with a hp 500 merc racing motor (550 hp)wondering what I can expect.Live in Mn so I have to wait a little bit longer.

454 mag EFI stock spinning a 4 blade hydro at 61mph on glass. New prop with very little testing before I put her to bed last year.Am hoping for a couple more. I'm going to guess upper 60's if not at 70. They tend to walk at 60 so it would be interesting to see if all that power pushes through that area?

The guy said he had it at 72mph with more to go but motor was not broken in yet.He thinks close to 80mph .The first 4 blade prop he out on chimed at 68 mph but the next one he tried at 72 mph said was smooth.

Let me know what actuall gps numbers are just curious!

I'm hoping you have hydraulic steering? What size prop are you running.

I am not sure on on the new prop size but the guy said he made it bulletproof he is a mechanic I am a new powerboat owner & so exicited to get out on the water with my new boat.He said he did alot to it it only has 10 hours on it.Along with a 2007 custom trailer.Just chommping at the bit to get her on the water.Like as I said he had it at 72 mph but thinks it will go close to 80mph?

Take it easy out there. If you are a new boat owner dont try and push it to top speed right away--that boat will most likely chine walk on you and you need to be ready for that whole experience.

By the way the blue motor--Mercruiser HP500 is rated at 470 horsepower--not 550. I highly doubt you will hit 80 mph--you arent going to get 20 more mph that us at 385 hp.

I had a 1995 257 with a 500 hp in it. The best i seen on it was 68 mph , I am sure you could get to 70 but you will be backing out of it when it starts chine walk. Good luck and enjoy your new boat

If your not sure on the hydraulic steering take a picture of the transom and post the pic. We'll be able to tell you. That is a must at over 70mph

I will check on the steering.The boat is still in storage.So you are saying this boat will not go over 70 mph without chine walking?That would be very dissapointing.