BBC SWP Crankshaft Pulley 2 Groove Black

The BBC SWP Crankshaft Pulley 2 Groove Black from TRANS-DAPT is purpose-built for big-block Chevrolet (BBC) engine swaps and high-performance applications requiring serpentine belt compatibility. This precision-engineered pulley replaces original equipment and enables modern accessory drive configurations on classic BBC powerplants. Whether you're retrofitting a vintage muscle car with contemporary cooling and charging systems or upgrading an existing BBC build, this two-groove design streamlines your engine bay while maintaining reliable belt engagement and load transfer.

Machined from durable cast iron with a professional black finish, the BBC SWP Crankshaft Pulley features a two-groove profile that distributes power evenly across modern multi-accessory serpentine belts. The SWP designation indicates this pulley is engineered for big-block water pump configurations, allowing seamless integration when adapting late-model cooling systems to big-block platforms. The 10-inch diameter and precision-balanced construction minimize parasitic drag while ensuring consistent crankshaft engagement, critical for maintaining accurate ignition timing and preventing belt slip under sustained load or high RPM operation.

Installers and engine builders favor this pulley for BBC restorations, street rod projects, and engine transplants where factory big-block pulleys prove incompatible with modern serpentine systems. This product is ideal for those looking to enhance the performance and reliability of their big-block Chevrolet engines. With its robust design and compatibility with modern systems, it is a valuable addition to any performance build.