BBC SWP Crankshaft Pulley 2 Groove Black

The BBC SWP Crankshaft Pulley 2 Groove Black from TRANS-DAPT (MPN 8616) is a precision-engineered harmonic balancer designed specifically for Big Block Chevy engines requiring a short water pump configuration. This pulley serves as the critical interface between your engine's crankshaft and accessory drive system, managing vibration while transferring rotational power to alternators, power steering pumps, and air conditioning compressors. Built for enthusiasts and professionals restoring or upgrading classic big-block Chevrolet powerplants, this component ensures reliable belt drive performance and extended accessory lifespan.

Manufactured from high-strength steel with a professional black powder coat finish, the BBC SWP Crankshaft Pulley features a two-groove V-belt profile and a 7.6-inch diameter optimized for big-block Chevy applications. The two-groove design accommodates multiple accessory belts simultaneously, reducing overall accessory package footprint while maintaining proper tension and alignment. The black powder coat provides corrosion resistance and a finished appearance suitable for both street and show vehicles. At 1.82 pounds, this pulley delivers the mass and inertia characteristics necessary for smooth crankshaft operation and vibration dampening on large-displacement engines.

This crankshaft pulley is ideal for Big Block Chevy engine builders, hot rod fabricators, and restoration specialists working with 427, 454, and other large-displacement variants requiring short water pump clearance. Installation is straightforward—the pulley bolts directly to the crankshaft snout and accepts standard automotive serpentine or V-belts. Verify your engine's specific water pump configuration and accessory bracket compatibility before ordering to ensure proper fitment and belt routing alignment. TRANS-DAPT's reputation for OEM-quality engine components makes this pulley a reliable choice for both daily drivers and performance builds.