If the engines are stock except for the boost, their peak RPM should be around 5200. Before you were under the max hp rpm range, so once you got to the optimum rpm for the configuration of the engine, it could have made that much difference. You'd be shocked at the difference a quarter of an inch will make in one of our race boats.
I still think you are a little low on speed for that package. I'll be really interested in the shape of the bottom and the depth of the drives.
Also, unless a prop has truly been blueprinted by a reputable prop shop, you really have no idea of how good they actually are.
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09-09-2014 11:11 PMLast edited by Ratickle; 09-10-2014 at 07:12 PM.
Getting bad advice is unfortunate, taking bad advice is a Serious matter!!