BBC DS Oil Pump 2-Stage Tri-Lobe RHS MP Mount

The BBC DS Oil Pump 2-Stage Tri-Lobe RHS MP Mount from MOROSO is engineered for serious big-block Chevy builds where reliable oil delivery under sustained RPM and boost is non-negotiable. Designed specifically for right-hand side (RHS) motor plate mounting, this pump serves hot rod builders, race engine builders, and high-performance enthusiasts who demand consistent oil pressure across the entire RPM band. The tri-lobe design delivers superior volumetric efficiency compared to standard gear pumps, making it the preferred choice for stroker engines, supercharged applications, and forced-induction builds requiring aggressive oiling curves.

The 2-stage design is the critical differentiator here—the pump features two distinct displacement stages that automatically adjust flow based on system demand and engine load. At idle and cruise, the lower displacement stage minimizes drag and parasitic loss, preserving horsepower. As RPM increases or load spikes, the pump transitions to the higher displacement stage, ensuring adequate volume for ring and bearing lubrication even under wide-open throttle or boost conditions. The tri-lobe rotor configuration reduces shear forces and heat generation compared to traditional gear designs, extending oil life and reducing the risk of cavitation in high-RPM applications. MOROSO's precision manufacturing ensures tight tolerances and consistency across every pump, critical for engines running sustained boost or nitrous oxide.

This pump is ideal for BBC blocks equipped with motor plate-mounted oiling systems, particularly those running dry-sump or remote-reservoir configurations where flow demands exceed conventional pan-fed setups. Installation requires a right-hand side motor plate mounting point—verify your block's oiling pad orientation before ordering. The compact 10 x 10 x 14-inch footprint fits tight engine bays common in vintage muscle cars and modern restomod platforms. Builders stepping up from street applications to competition duty, whether drag racing, road course, or street-strip duty, will appreciate the reliability margin this two-stage pump provides under sustained high-load scenarios.