What's it worth
#22
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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?
#23
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Join Date: Feb 2009
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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.
#26
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Join Date: Feb 2009
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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?
#27
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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.
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.
#28
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Join Date: Feb 2008
Location: LITH IL
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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