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i want to stuff a chevy v-6 in place of my current 140 horse 4 banger.i have a kodiak 2 stage pump for propulsion.i am wondering if i will get any benefit from this swap.i cant stop thinking i will have more ponys for power but will that make any differance since it will still produce the same amount of rpm's.
 

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I'm not a pump expert, but the impeller pitch will probably be to small for the V6, and it will over rev, then you have no benefit. The idea is to find the tallest pitch that will allow the motor to rev properly, which is where the extra HP will pay off. No different than a prop motor in this regard. Change HP, change props.
 
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