Water Pump SBC Short Racing Series

The Stewart Water Pump SBC Short Racing Series (Part Number 33143) is a Stage 3 mechanical racing water pump engineered specifically for small block Chevy engines requiring maximum cooling efficiency in high-performance applications. This short-design aluminum pump features a 3/4-inch pilot bore and delivers the flow rates and pressure control demanded by racing engines operating at sustained high RPM.

Built from aluminum construction with natural finish, the short housing design allows installation in tight engine bays while maintaining the cooling capacity required for turbocharged, supercharged, or naturally aspirated SBC builds. The Stage 3 rating indicates this pump is calibrated for maximum flow output—a critical specification when engine block temperatures climb above 200°F under sustained racing conditions. The 3/4-inch pilot bore ensures precise fitment to OEM and aftermarket small block Chevy crankshaft snouts, eliminating clearance issues common with undersized or oversized pumps.

This pump is designed for serious racers and engine builders who prioritize cooling system reliability over weight savings. Street hot rods, drag racing platforms, and road-course engines all benefit from the controlled flow characteristics of a dedicated mechanical racing pump. Short-block Chevy engines running high-compression pistons, nitrous injection, or extended power bands require consistent coolant delivery to prevent cavitation and overheating—the Stage 3 series delivers that reliability across the RPM band.

When selecting a water pump for racing applications, verify crankshaft bore diameter, anticipated coolant flow requirements, and engine bay space constraints. The Stewart SBC Short Racing Series represents a proven choice among small block Chevy enthusiasts who demand performance-oriented cooling system components.