New Boat Needs Power

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FishinCoop101
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New Boat Needs Power

Post by FishinCoop101 »

I am thinking about building an 18 X 8 alluminum Hull. Would a 383 and a reduction be enough motor to push the boat. or should I just look for a BB. Ive seen some of these guys runnin these big boats with a Small Block. Not looking to run dry, but would like to keep from being stuck.

Any help would be appriciated.

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Brotherbob
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Re: New Boat Needs Power

Post by Brotherbob »

Big Block - you only cry once when you buy it... :violent1:
BRAB41,TAA-220 ,Air Ranger 15x8 , SBC , 78 " 3 blade WW prop, 2.88 Stinger
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riverat1953
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Re: New Boat Needs Power

Post by riverat1953 »

BIG BLOCK CHEVY IT DISPLACES EVERYTHING...REALLY! :usa:

cummins diesel power
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Re: New Boat Needs Power

Post by cummins diesel power »

you know the ol saying 'theres no replacement for displacement"
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540 mountain motor
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Re: New Boat Needs Power

Post by 540 mountain motor »

Big boat, big torque. BBC!
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watersports7
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Re: New Boat Needs Power

Post by watersports7 »

BBC
12' Predator / Lycoming 4 Cylinder / Old Skool 68x38 Stick Prop
Perfectly said by Lycoming: Some engines purr like kittens. These roar!

FishinCoop101
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Re: New Boat Needs Power

Post by FishinCoop101 »

So.....a built 454 stroked and bored would be a good candidate. What kind of reduction would work the best. Ratio???? Also any Carb recomendations.

Slayride
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Re: New Boat Needs Power

Post by Slayride »

fishincoop, I run 468 rat motors on both my 23ft and 18ft boats with belt reductions. While I agree and always will, there is not substitute for cubic inches, I am about to replace the BB on my 18ft for a 383. If you aren't going to run tons of dry ground, leave it light. A 383 with aluminum heads will put the thing way lighter and bring the center of gravity way down. I ran a buddies 18ft with his stroker and couldn't believe how much better it handled turns etc. and it sure "leaves" harder and is much more "sudden" than my boat. Put it on a diet and go with the small block, you won't be disappointed.

Keep the carb simple, run a 750 manual choke Edelbrock. Its the old faithful, easy to work on Carter AFB product. Especially if you are running in or near salt water.
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