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Tested a 2011 Tahoe Q5i with 4.3L mercruiser and 14 x 23” prop. All seemed to be good except WOT resulted in ~3300 RPM & 39 MPH. Two male adults and 1/2 tank of gas with very little gear on board and water & wind were pretty calm. No bogging noted and engine ran fine for the 2+ hours out...
