I get 25.5 knots at 4000rpm's and 38.5kts at wide open 5950 rpm's with Twin Suzi 115's on a bracket.
Great power package. It really has the weight to keep the ass end in the water in big seas and the torque to hold plane in rough water at slower speeds like 14-16kts in true slop or breaking waves.
The only downside is the weight of twin 4 bangers. About the same as a 350 Yami.
All in all I'd do it again or a single 300. Hope this helps.
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Capt. Brian
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