I have a 1986 Galaxie 18ft boat with a xr2 150 black max on it. Motor runs awsome! My question is I top out at 47 mph and cant get more then 5500 rpms. From what i have read I should be pulling 6000 rpms out of this motor. Is this correct? I have no idea what the pitch my prop is (came with the motor) I just know its a 3 blade. The boat is a open bow run about type boat. Can any one tell me what pitch prop they think I shoud be running on this. Im hauling around two adults and two teenagers so there is some weight in the boat. I have attached a pic to give an idea of the size boat.![DSC02011-1.jpg DSC02011-1.jpg](https://forums.iboats.com/data/attachments/112/112548-5946fc568271bf3fc80d0e79b98c3647.jpg)
![DSC02011-1.jpg DSC02011-1.jpg](https://forums.iboats.com/data/attachments/112/112548-5946fc568271bf3fc80d0e79b98c3647.jpg)