I dunno. I do fine with a single 260 I/O in mine. I top out at 38 mph per my Garmin. Doubles would cost too much for me between spring commisioning, fuel and winterization.
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1984 248 Sportsman w/1999 5.7L EFI Mercruiser
2001 Carolina Skiff J16 w/2005 25hp Yamaha tiller control
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