Just wanted to weigh in I must have gotten a pair of stronger 350mags, all stock and going up river me the wife two kids, half tank of gas and a big cooler of beer, I got 70.3MPH GPS! Also I towed my boat two times with the F150, and its fine if theirs no hills pulling it, but with a new triple axle break system it still didn't like stopping it! So I bought a F250 Diesel!!

What props and Gears are you running? I'm guessing 1.65 with 28 Bravo?

Not sure of the gears but yes the stock 28 bravos!

Yours is running as it's designed to...70+ top end with 600 hp.

Mine does right at 70 GPS also..... with 1/2 tank, and I little chop. I have an 07, 292, with the 350's.......great boat overall. It's for sale if anyone is interested!!!!!!!

I agree with Sprink. You could have the props tweaked for an extra mile an hour. I had mine done by BBlades with the objective a better whole shot. I lost 1-2MPH but the boat planes much better.

yes

twin 570 Ilmor´s would be the Mega Package

also twin 6.2 430 HP Ilmor´s would push it into the 80 `s

Or these, should also see 80


http://www.mercuryvidz.com/mercury/m...vo-400-hp.html

Yep...just inspires me to get back to work in getting my 355 Vortecs in my 255 Liberator....maybe I'll see 70~75 pushing 5600 lbs with 700+ horsepower...

http://www.offshoreonly.com/forums/f...or-update.html

I wont be too picky just give me 400 a side. SBC's and 80mph is a great setup.