I just purchased a 2800 scr with the 7.4 mpi last year and although I installed a new engine, I think we can share some info. With 6 adults 60 gal of fuel, 5 coolers in the aft cabin area, we had to move 2 people to the front of the boat and head down wind to get on plane and going into a 10kt wind was useless. We had 2-3 footers at the time. the next day we were on calm waters and the same load, no wind and got on plane much easier. I boat on Lake Michigan at Chicago and am running a 22 pitch bravo 3 drive. What prop are you using? On plane and trimmed out i'm getting 4400-4600 rpm I am not sure what speed i'm running, have to replace the spedo or get gps.
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