After four trips to the ramp she's running great.  The culprit was the carbs needed rebuilding and then we discovered electrical gremlins in the rats nest of wiring under the dash.  The key switch was bad.  The boat would run fine in the garage and at the ramp but on the lake every wave would jar the switch and it was cutting power or dropping voltage to 8 to the motor.  Tossed the key and went with a switch and push button starter.

So here is the question.  It's a 454, .30 over, dual 600's, 11 to 1 pistons, b impeller, droop snoot, jet O Vator.  At wide open throttle I'm at 6000 rpm and we hit 74 mph.  It just feels like it could go faster, like if it were a car it would need a gearing change.  It hits really hard out of the hole, but runs out of prop so to speak at the top end. 

Different impeller?






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Any bottom work done to it ?


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Doesn't look like it, hard to say until I flip it this winter, pump isn't set back, no loader.  History is kind of sketchy on the boat so I am figuring out most everyone on my own.  When engine was built it dyno'd at 718 hp, isky cam, head work, forged internals.


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