BBC Louvered Windage Tray

The BBC Louvered Windage Tray is a critical internal engine component designed to manage oil mist and splash lubrication in big-block Chevrolet engines during high-rpm operation. As an experienced mechanic, you know that uncontrolled windage—the chaotic spray of oil from moving crankshaft and rod journals—creates drag that steals horsepower and generates heat. This louvered windage tray intercepts that oil mist, directs it efficiently back to the pan, and reduces parasitic losses that directly impact performance and reliability in street, bracket-racing, and high-performance applications.

Engineered with strategically angled louvers, this tray channels oil spray downward and away from the rotating assembly while maintaining optimal oil return flow to the crankcase. The design minimizes aeration and foaming—common issues in aggressive builds where standard factory pans fail under sustained boost or nitrous application. Weighing just 1.63 lbs and measuring 9.75 × 15.2 inches, it fits precisely within BBC pan geometry without interfering with crankshaft or connecting rod clearance. Fabrication and finish quality ensure durability through thousands of heat cycles and sustained high-rpm runs.

This windage tray is essential for any serious BBC build—whether you're running a naturally aspirated stroker, forced-induction engine, or dedicated race platform. Installation requires pan removal and positioning the tray on the crankcase before final pan bolts are torqued; verify clearances with your specific rotating assembly and oil pump pickup tube. Pair it with a quality deep-sump pan, windage separator, and proper crankcase ventilation to maximize breathing efficiency and horsepower retention across the entire rpm range.