BBC Vacuum Pump/Oil Pump Drive Kit

The MOROSO BBC Vacuum Pump/Oil Pump Drive Kit (MOR63844) is a precision-engineered accessory drive system designed for Big Block Chevrolet V8 engines requiring independent vacuum and oil circulation management. This crank mandrel drive kit solves a critical challenge for engine builders, restorers, and performance enthusiasts who need to power auxiliary systems without sacrificing belt real estate or adding parasitic drag to the main serpentine system. By utilizing a dedicated 5-inch mandrel and Gilmer/V-belt pulley configuration, this kit isolates vacuum and oil pump operation for improved reliability and efficiency.

This drive kit features a compact 5-inch mandrel design that mounts directly to the engine block crank, delivering consistent, low-speed rotation ideal for vacuum and oil pump requirements. The Gilmer and V-belt pulley options provide flexibility in belt selection, allowing builders to choose based on their engine bay layout and load specifications. The system includes all necessary hardware for installation, eliminating the need to source additional fasteners. The robust construction ensures years of reliable operation under the demanding conditions of street, race, or restoration applications, while the modest weight of 3.35 pounds minimizes impact on engine balance.

This kit is essential for Big Block Chevrolet (BBC) engine builders tackling custom intake manifolds, dry-sump conversions, or high-performance fuel systems that demand dedicated vacuum supply independent of engine load. Restorers modernizing vintage Chevy V8s benefit from the ability to run modern vacuum-assisted braking and power steering without compromising original aesthetics or adding complexity to the main accessory drive. Installation requires basic mechanical knowledge and standard hand tools; compatibility with aftermarket intake manifolds, headers, and custom engine bays makes this a versatile solution for any serious BBC build. Specifications and dimensions provided ensure proper fitment before purchase.