BBC LWP Crankshaft Pulley 3 Groove Black

The BBC LWP Crankshaft Pulley 3 Groove Black from TRANS-DAPT is purpose-built for Big Block Chevy engines running long water pump configurations. This component serves as the critical interface between your engine's crankshaft and accessory drive systems, directing power to alternators, power steering pumps, and cooling fans. Whether you're restoring a classic muscle car, upgrading a performance build, or maintaining original equipment function, a properly matched crankshaft pulley ensures harmonious operation across all belt-driven accessories.

Machined from steel and finished in black powder coat, the BBC LWP Crankshaft Pulley 3 Groove Black delivers durability and corrosion resistance for both street and engine bay environments. The three-groove design accommodates standard serpentine belt configurations common to Big Block Chevy platforms, while the 7.8-inch diameter maintains factory-correct pulley ratios and accessory drive speeds. Black powder coating protects against rust and UV degradation while providing a professional appearance that complements stock or custom engine bays. This pulley weighs just 3.33 pounds, minimizing rotating mass without compromising structural integrity or harmonic damping characteristics.

Mechanics and engine builders working with big block platforms benefit most from this precision component, particularly when transitioning between long and short water pump configurations or replacing worn pulleys that cause belt slippage. The long water pump designation is critical—using the wrong pulley geometry can result in belt misalignment, accelerated wear, and accessory under-drive. Installation requires no modification to standard BBC engine mounts or accessory brackets, making this a straightforward bolt-on replacement that restores proper belt tension and accessory performance immediately.