Moroso 22163 High Volume Billet Aluminum Oil Pump for Big Block Chevy

The Moroso 22163 is a high-performance billet aluminum spur gear oil pump designed specifically for big block Chevy engines with 8-inch deep oil pans. This premium wet sump oil pump delivers both high volume and high pressure for superior engine lubrication at elevated RPMs, making it the choice of top engine builders for serious racing applications.

Advanced Engineering Features:

• 6061-T6 billet aluminum housing with mounting boss area 3 times larger than stock to prevent breaking
• Integrated pickup design eliminates oil tube failures
• Special anti-cavitation slots and feeder grooves machined into housing
• Enlarged bypass area bleeds oil back to inlet side for smooth, consistent flow
• Thrust bearing assembly increases housing and gear life by managing drive shaft axial forces
• Increased inlet area prevents cavitation under high-demand conditions

Performance Specifications:

• Weighs 1 lb. less than stock oil pump with pickup
• Clears 4.750-inch stroke with most steel connecting rods
• Engineered for 8-inch deep oil pans
• Uses stock mount stud and oil pump shaft
• High-pressure spring included; hardened driveshaft recommended
• Pickup included (not welded on)

This patented design (No. 5,810,571) combines maximum volumetric efficiency with smooth oil delivery, reducing load on the distributor shaft to eliminate spark scatter while extending engine life. Ideal for wet sump racing applications requiring reliable high-volume oil flow.