Prop pitch is the number of inches the prop would travel "screwing" through the water without any slippage. The lower the pitch number the more engine rpms it takes to travel a certain speed. Typically, you want to have a balance between hole shot, under towing conditions, and cruising. Most of the time, people with the 3.0 will pitch down 2" to improve hole shot with making the motor scream during towing and cruising. I have heard of people going as much as 4" in pitch after some experimentation. You can also use a ventilated prop (exhaust ports out the side) and also reduce diameter. Reducing diameter reduces the amount of traction each swing of the prop has and reduces the amount of engine torque to turn the prop. Even 1/2" of diameter reduction will make a large difference.
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