I just bought a 1994 Chris Craft 25' Cruiser with a 5.8 OMC with an Omc King Cobra drive, before I took it out I changed the oil, plugs, drive oil, and impeller.
I took it out 2 or 3 times and all was good except WOT RPM's were a little high
because of a corroded prop. I got a new prop 15x17 and...