1974 1996-2014 Small Block Long CW or CCW 262 305 350 Vortec water pumpSBC running hot? Flowkooler designed a high flow water pump with a CNC machined billet impeller with an increased vane count and reduced casting to impeller vane clearance. It achieves greater flow rates, higher head pressure and a more efficient flow. The impeller color is due to Type II Class II military grade surface coating which protects against corrosive fluids. Why is increased flow so important to cooling a hot Vortec engine? Because it has