BBC Water Pump Short Counterclockwise Rot.

The BBC Water Pump Short Counterclockwise Rotation by Edelbrock (MPN 88540) is a purpose-built mechanical water pump engineered for Big Block Chevy engines requiring reverse rotation capability. This pump addresses a critical cooling need for custom engine builders, hot rodders, and performance enthusiasts who install serpentine belt systems or unconventional accessory drives that demand counterclockwise impeller operation. The short design profile makes it ideal for tight engine compartments where space is at a premium, without sacrificing cooling capacity or reliability.

Constructed from lightweight aluminum, this water pump features Edelbrock's Victor Series engineering, delivering efficient coolant circulation at the speeds and pressures modern Big Block Chevy engines demand. The 5/8-inch pilot bore ensures secure mounting to the engine block while accommodating various belt and pulley configurations. Its counterclockwise rotation capability—achieved through internal impeller geometry—allows seamless integration into reverse-driven accessory systems without requiring additional adapters or spacers. The natural aluminum finish resists corrosion while maintaining a clean, professional appearance under the hood. At 9.32 lbs, the compact dimensions (9.15 x 8.6 x 13.95 inches) confirm its short-design advantage for space-constrained installations.

This pump is essential for builders who've invested in custom serpentine belt kits, rear-mounted alternators, or fuel pump-driven secondary cooling loops. It's particularly valuable in street rods, pro touring vehicles, and race engines where accessory packaging dictates non-standard rotation directions. Proper installation requires confirming belt routing and pulley alignment before operation; Edelbrock's Victor Series design ensures compatibility with standard BBC block variations. For anyone upgrading a Big Block Chevy cooling system with reverse-rotation demands, this short-design pump eliminates compromise between fitment and thermal performance.