Cam comes in at 1350 -5500. It seems that we are at an impasse. Motor builder says now. ( I guess thats all it's gonna do)
5200 on a shop tach is the best that we have seen. I'm thinking that although the boat runs much stronger than it did before. Much quicker to plane, and I can stay on plane at a lower RPM than before. Will plane off with 4 adults in it now as compared to last year when you had to move everybody up front to get the front end down. Boat design is rear heavy and all the scorpions I've seen lay low in the water in the stern. I guess I'm just gonna wait for the cupped and vented stainless 19 pitch to come back from the prop shop and see how it works then. My son blew the upper gearcase on his boat last week end , so any extra funds are going in that direction right now. A Friend's Scorpion will run out to close to 70 mph. but his motor was dynoed at close to 600 Hp. Has to run 93 and the friggen thing has no idle. Docking the beast is almost impossible unless you paddle it in.