2-GRV. 5-3/4in Crank Pulley

The 2-GRV 5-3/4in Crank Pulley by March Performance is a precision-engineered crankshaft pulley designed for Small Block Ford engines from 1965–1969. This aluminum component replaces worn or damaged factory pulleys and serves as the critical interface between your engine's crankshaft and accessory drive belts. Whether you're rebuilding a classic Ford or upgrading your engine's cooling and charging system efficiency, a quality crank pulley ensures proper belt tracking, reduces vibration, and maintains accurate ignition timing on older fuel and carbureted platforms.

Constructed from lightweight aluminum with a durable clear powder coat finish, the 2-GRV pulley features a two-groove V-belt configuration and a 5.75-inch diameter that matches OEM specifications for Small Block Ford applications. The two-groove design accommodates standard alternator and water pump drive belts without requiring serpentine or multi-rib conversions, making it ideal for stock restorations or mild performance builds. At just under 2 pounds, the reduced weight compared to cast-iron originals decreases parasitic engine load while the clear anodized coating resists corrosion and UV degradation in engine bay environments. March Performance's engineering ensures concentricity and balance, critical factors that prevent belt slip and premature wear on accessory pulleys.

Restorers, hot rodders, and engine rebuilders rely on this pulley to maintain factory authenticity while benefiting from modern manufacturing precision. The hardware is included, allowing straightforward bolt-on installation onto your crankshaft snout—no additional fasteners needed. Compatibility is confirmed for Small Block Ford 200, 250, 289, and 302 cubic-inch engines across the specified model years; verify your engine displacement and mounting boss configuration before purchase to ensure proper fit with your specific vehicle's harmonic balancer and timing cover assembly.