What pitch prop were you running? You say it hit WOT turning 5K RPM's, how fast were you going? There's a good chance that the 3.0L outdrive has a 2:1 ratio and isn't allowing the engine to get loaded properly, I believe the 3.7L uses a 1.81:1 ratio. Spare would know better on this matter as he deals with more I/O's.
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2011 SUNDANCE B20CCR SKIFF, 2011 YAMAHA 90HP 4 STROKE, 2011 KARAVAN SINGLE AXLE ALUMINUM TRAILER, LOWRANCE ELITE-7 HDI, MINN KOTA RIPTIDE TROLLING MOTOR
2000CC HYDRA-SPORT 225+HP EVINRUDE SOLD 
AND THE PINK JEEP!!!! R.I.P.
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