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Old 06-01-2003, 08:04 PM
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Default more power!!

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.
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Old 06-01-2003, 09:15 PM
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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

Last edited by mopower; 06-01-2003 at 09:17 PM.
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Old 06-01-2003, 09:38 PM
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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
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Old 05-14-2006, 06:53 PM
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Re: more power!!

hi i have a 221 liberator with a 454 would like to know if you know the prop size i should be running
thanks
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Old 05-14-2006, 07:35 PM
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Default Re: more power!!

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
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Old 05-14-2006, 09:14 PM
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Default Re: more power!!

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