1674 1971-1974 Chevy Corvette 454 Big Block Short 5-3/4" water pump

Flowkooler high flow pump 1674 has a 16 vane CNC machined billet impeller. Its shrouded and ported and, with the increased vane count and a reduced impeller clearance, it really pumps the coolant. It achieves greater flow rates, higher head pressure and a more efficient flow. The impeller's color is due to Type II Class II military grade surface coating which protects against corrosive fluids. FlowKooler introduced the first hi flow pumps and continues to improve impeller design. Why is increased flow so important to cooling a hot engine? Because it has been proven time and time again that reducing the cycle time between the heat source and the heat sink creates more opportunities to shed heat and drop engine temperatures. From 0-3,300 RPM…Nothing Beats a FlowKooler! General Specifications: Type of Material of Pump Body Cast Iron Number of Blades on Impeller 16 Direction of Rotation CW Fan Hub Height 5 3/4" Shaft Diameter 3/4" Hose Connections: 1st 2nd Gender F F Diameter 3/4" 3/4" Threaded Yes Yes Other Special Features: 16 blade CNC impeller system Anodized w/ a Type II Class II military grade surface coating Impeller blades designed for CW or CCW rotation 3/4" shaft cast iron-bodied "short" big-block Chevy pump, Corvette engines Alternative part numbers 3998214, 6258547, 6260822 Parts Contained in Box: Mounting Gasket, 3/4" X 11/2" Threaded Heater Hose Extension, Installation Sheet, FlowKooler Decal Make Model Year Block CID Liters Chevrolet Corvette 71-74 V8 454 7.4L