Question: what is the difference between a 3 blade and 4 blade prop?
Answer: What is the Difference Between 3 Blade and 4 Blade Propellers? ... Compared to 3 blades, 4-blade boat props provide better "hole shot" performance with less steering torque and less vibration at high speeds. When switching from 3 to 4-blades, generally a 1" pitch decrease is required.