Alum. Single Vee Groove Pulley - BBC

The Blower Drive Service Aluminum Single Vee Groove Pulley (VP-3513) is a precision-engineered crankshaft pulley designed for Big Block Chevy engines running V-belt drive systems. Manufactured from polished aluminum, this single-groove pulley delivers reliable belt engagement and efficient power transfer in high-performance automotive applications where durability and consistency are non-negotiable.

The 6.25-inch diameter provides optimal pulley speed ratios for BBC engine platforms, a critical factor for maintaining accessory load balance and extending serpentine belt life. Aluminum construction keeps rotating mass lower than cast iron alternatives, reducing parasitic drag on engine output while the polished finish resists oxidation and maintains visual clarity during routine maintenance inspections. Weighing 1.9 lbs and measuring 6.9 x 1.2 x 7.3 inches, this pulley integrates seamlessly into existing BBC crankshaft assemblies without modification.

This component is essential for builders and shop technicians restoring or upgrading Big Block Chevy powerplants, whether for street performance, marine applications, or engine overhauls requiring OEM-specification accessories. The single-groove design accommodates traditional V-belt configurations, making it ideal for classic BBC setups that rely on older alternator and water pump drive systems. Blower Drive Service maintains tight manufacturing tolerances on all crankshaft pulleys, ensuring proper belt alignment and eliminating the slippage issues that plague lesser-quality alternatives.