AMC Oil Pump Wear-plate Kit for 290 thru 401 ci Motors. This is to stabilize oil pressure, whether your bottom oil pump cover is worn or not. With the installation of the kit, the oil pump gears ride on steel, not aluminum, for less expansion, and more stabilized pressure. The wear plate has a smaller hole thus limiting oil to the by-pass, and pumps more oil into the engine.
“More about the detailed difference”
The by-pass hole on our plate is much smaller. The pictures show this in detail, (arrows on the picture) . The one on the left is the one we have created. The smaller hole limit’s the amount of oil going to the bypass, also there is more contact of the oil pump gears. The image of where the oil pump gears are located show the resizing decreases the amount of oil being pumped through to the bypass which means more oil into the motor.
Included with the kit: Steel Spaces, Oil pump gaskets (2), Cap Screws (7), Washers (7), plus step by step instructions for the installation. (The second picture shows the area of the oil pump cover that the kit is designed for, the pump is not included.)