Moroso Chevrolet Big Block Mark IV Windage Tray (For Part No 20385 Old Style)

This is the Moroso windage tray designed specifically for Chevrolet Big Block Mark IV engines, intended for use with the older style part number 20385. A windage tray is a crucial component that sits between the crankshaft and the oil pan. Its main job is to reduce windage, which is the drag created by the spinning crankshaft and rotating assembly churning through the oil in the pan. By minimizing this drag, the engine can gain a little more power and the oil stays cooler.

Moroso has built this tray from durable steel, shaped to fit precisely around the crankshaft and clear the connecting rod bolts. It's designed to help keep the oil in the pan from being aerated by the spinning crank, ensuring the oil pump pickup stays submerged and can deliver consistent oil pressure. This particular tray is made to work with a specific older Moroso oil pan, part number 20385, so make sure you have that setup or are planning to get it.