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Hello,
The 3 litre mercruiser (1999) (alpha: 115 HP) on my 18 foot Larson does not get up to target RPM (4400 - 4800) even at WOT. Started with a 23 pitch but only went to 3800 RPM and 42 MPH. Went down to 18 and now at 15 pitch (15.25 diameter) but still only get 4200 RPM at WOT (trimmed) and...
