HP Aluminum Water Pump 55-72 SBC Short

The HP Aluminum Water Pump 55-72 SBC Short is engineered for small-block Chevy engines requiring reliable thermal management without the bulk of traditional cast-iron designs. Built for engine builders, hot rodders, and performance enthusiasts who demand lightweight construction and proven durability, this mechanical water pump delivers efficient coolant circulation across five decades of small-block Chevrolet platforms. Whether you're restoring a classic muscle car or building a high-output street engine, this short-design pump eliminates accessory interference while maintaining superior cooling capacity.

Manufactured from lightweight aluminum, this pump reduces rotating mass and parasitic drag compared to cast alternatives, translating to measurable horsepower gains in carbureted and fuel-injected applications alike. The 5/8-inch pilot shaft is precisely machined to mate with standard small-block Chevy crankshaft dampers and belt-drive systems, ensuring tight tolerances and leak-free operation under sustained RPM loads. The short design minimizes intrusion into engine bay real estate, critical when clearance conflicts arise with headers, supercharger manifolds, or custom frame rails. Each unit weighs just 8.15 pounds and measures 9.9 x 7.5 x 13.7 inches, making it compact enough for tight installations without sacrificing impeller displacement or flow rate.

This water pump is ideal for small-block Chevy engines spanning 1955 to 1972 model years and is equally suited for crate engine swaps into modern chassis. Installation requires standard mechanical pump tools and basic gasket preparation; the aluminum construction resists corrosion when used with quality coolant inhibitors. Mechanics and enthusiasts consistently specify aluminum short-design pumps for vintage restorations, street rods, and performance builds where every pound and cubic inch matters. For precision cooling without compromise, the HP Aluminum Water Pump 55-72 SBC Short delivers proven small-block Chevy reliability in a package built for serious horsepower applications.