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    5.0 MPI Alpha I Low WOT RPM

    I have a 2004 5.0 MPI merc with an alpha I drive powering an '04 Chaparral 210 ssi. My rpm at WOT is only 4,000 under normal loading conditions (should be 4,600-5,000). I've tried both a 21 and 19 pitch prop, without a noticeable difference. The only thing I can think is that I may be running...
  2. S

    Chaparral 210 ssi Power

    I recently purchased an '04 210 ssi with the 5.0 liter V8 and a 21p aluminum prop. At full throttle, 2 adults and 2 kids in the boat, I'm at 3800 rpm and approximately 43mph. I would have expected more top end out of this boat! Also, it does not come out of the hole like I would have...
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