System One 234-900773-2 BBC Cast Oil Pump Pre-Set 80 PSI High Volume Adjustable

The System One 234-900773-2 is a high-performance cast iron oil pump designed specifically for Big Block Chevy applications. This wet sump, internal mount oil pump comes factory pre-set at 80 lbs warm operating pressure and features adjustable pressure capability for precise tuning of your engine's oiling system.

Key Features:

• Cast iron high-volume spur gear pump construction for durability and reliability
• Billet aluminum cover with hard black anodized finish for wear protection
• Adjustable oil pressure range from 65 to 100 PSI to optimize performance
• Factory pre-set at 80 lbs warm for immediate installation
• Anti-aeration diffusion screen technology returns excess oil to pan to prevent oil foaming
• Increased lubricant volume compared to OEM pumps
• Standard tang drive design mounts to stock main cap location
• Uses standard 3/4-inch big block oil pickup (pickup sold separately)
• Compatible with OEM or Dan Olson bell-style pickups
• Flow tested for consistent performance
• Easily adjustable with simple hand tools

This pump is engineered to continually pull fresh oil from the sump while diffusing excess oil back into the pan, maintaining optimal oil pressure without creating aeration issues. Ideal for high-performance street, drag racing, circle track, and endurance racing applications where consistent oil pressure and volume are critical for engine protection.