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I’m looking to repower my 34′ lobster boat(Libby 34×13). I have a Deere 6068SFM50 rated at 265hp with a ZF280 at 2:1 to a 2″ shaft spinning a 24×25 wheel at the moment. The engine I’m looking at is a very low hour QSB 5.9 at 480hp. I know the engine will fit and my gear and shaft will handle the horsepower. My questions revolve around the exhaust and the power steering pump that is already on the engine. The Deere has a 4″ exhaust outlet that goes to a 6″ exhaust before the engineroom bulkhead and is 6″ through to the stern. Is 6″ sufficient for the 480? I also have power steering run off a PTO on my gear, with 2 helm stations and an autopilot solenoid. Would the power steering pump on the 480 be compatible with my system so I could get rid of the PTO on my gear?
Thanks
John
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