i have a 1990 201 four winns liberator. it has a chevy 350 with a king cobra outdrive. right know im running with a 19 pitch prop. im looking for some anded power. right now at wot it runs 55. im bored!!! i want to hit 60. and then try to hit 65. everything is bone stock. what is the best way that is least expensive way to gain the mph. thanks guys.

Did someone call my name?

Yesreej,
Not to sound like a smart a$$ or bust on you boat. Buy one that goes faster...it will be cheaper and easier in the long run.
I owned a 1988 221 Liberator with a 460 (340 hp) King Cobra...did 62mph. I'm crazy , I built a 540 Ford (625 hp) and could do 80. Yeah I know , now your excited right?
A friend of mine has been on the same quest as you for 4 years now with his 20' Rinker 260hp Merc , then a 330 hp crate engine , then a bigger cam and head work to that one , now a 408 small block. He started out about 55 mph. He's now up to around 65.
At this point we're talking about $1000 per mile an hour Not to mention one helluva lot of labor on his (and my ) part.

Old boating question "How fast can you AFFORD to go?"


Good luck in any case

The cheapest and easiest would be a tuneup...proper prop size for you application , and if you don't already know how to...learn how to trim properly. That alone can give you 2 , 3 even 4 mph

hi i have a 221 liberator with a 454 would like to know if you know the prop size i should be running
thanks

I owned the same boat 350 mag king cobra drive bone stock 55mph so I went with a balanced and blueprinted assembly high volume oil pump .040 over(forged pistons), lunati cam and lifters, comp springs and rockers, dart heads angle plugs 2.02/1.94 64cc valves unshrouded, thru-hull exhaust, hydromotive nose-cone and 21 pitch viper prop eldelbrock rpm performer and the q-jet carb, electronic ign. The boat ran 62-63 mph. It might of run better if I would of run headers. My friend has the bought and he is putting a stroker in it

I had the same boat for 11 yrs!!! Never a problem, rock solid. I never touched the motor though.