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I have a Sea Ray 250da, 2006., with a new Mercruiser 350 Magnum MPI with 300hp. My stern drive is a Bravo Three with 2.0:1 ratio and a 22P propeler. On 4200rmp is full gas and the boat is 35mph (30kt) fast. Can me enybody tell what a ratio I need and what propeler pitch? And what would be the preformance?
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Try visiting http://sites.mercurymarine.com/porta..._schema=PORTAL
By entering all the info about your boat you will get the best recommendations on prop size.
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