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  1. M

    Looking for an Expert in the Boston Mass area

    I am looking for someone to help me with a few issues on my boat. Brief overview I have prop cavitation issues out of the hole not sure if the props are correct also at WOT tachs read 3800 RPMs . The boat is a Freedom Mach 1 Concorde 27' twin 350's . Those are the 2 big issues maybe there's a...
  2. M

    What size prop?

    I have a 27' 1987 Mach 1 Concorde twin 350's . What size props are people running on there boat around this size with twins? I am having an issue I run about 42 mph at 3800 rpms at WOT . My current props that came with the boat are SS Mirage 23 pitch. I have a slight problem with the boat...
  3. M

    27' Mach 1 twin 350's RPM issue

    I have a 1987 Mach 1 27' Concorde twin 350's . My question is when I am running WOT my rpm's on both motors read about 3800 at 44MPH. I am not sure where my problem is, is the Rochester Quadrajets secondaries not opening? I am running SS Mirage 23 Pitch props . Do you think the pitch is wrong...
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