Alum. Single Vee Groove Pulley - BBC

The Blower Drive Service Aluminum Single Vee Groove Pulley (VP-3513) is designed for serious big-block Chevy (BBC) engine builders and hot rod enthusiasts who require precision in their belt drive systems. This aluminum pulley is essential for managing power delivery from your engine to forced-induction components, ensuring minimal slippage and maximum efficiency.

Constructed from lightweight aluminum, this single vee groove design accommodates a traditional V-belt configuration that effectively transfers rotational force from your crankshaft to blower or supercharger components. The single groove profile ensures positive belt engagement and reduces vibration, which is critical for high-RPM applications where harmonics can lead to belt slippage or premature wear.

At just 1.9 pounds, the aluminum construction minimizes rotational mass, allowing your engine to rev faster and reduce parasitic drag on the crankshaft. The compact 6.9-inch diameter fits tight engine bays while providing the necessary torque capacity for large-displacement BBC applications, making it a vital component for reliable accessory drive operation and consistent boost delivery.