BBC Oil Pump Driveshaft +.400

The ARP BBC Oil Pump Driveshaft +.400 is a precision chromoly oil pump drive component engineered for big block Chevy engines running tall deck blocks. This driveshaft serves as the critical link between your crankshaft and oil pump, ensuring consistent oil delivery under extreme operating conditions. Whether you're building a street performance engine, drag racing application, or high-horsepower street car, this component is essential for maintaining proper lubrication when factory geometry no longer applies.

Manufactured from chromoly steel, the BBC Oil Pump Driveshaft +.400 features the extended "+.400 inch tall deck" specification, which accounts for the additional height of tall deck big block platforms compared to standard blocks. This precision offset ensures proper engagement between the oil pump shaft and crankshaft drive, preventing misalignment that could result in inadequate oil pressure, bearing damage, or catastrophic engine failure. ARP's manufacturing tolerances guarantee consistent geometry across batches, critical for reliability in modified engines where aftermarket blocks, stroker cranks, or custom decking work has altered original engine architecture.

This driveshaft is indispensable for anyone building or modifying a big block Chevy with tall deck specifications, including 427, 454, and other high-displacement BBC applications. Mechanics and engine builders rely on this component when installing aftermarket blocks, custom crankshafts, or when original pump geometry is compromised by engine deck work. The lightweight design (0.49 lbs) maintains rotational balance while its compact dimensions allow straightforward installation during engine assembly or rebuild operations.