5. The Gen III and IV oil pan is cast-aluminum with a reusable gasket, has dual windage trays to help against sloshing, and keeps oil near the pick up. A few different oil pans are available, but it is generally believed that the Camaro pan is better for off-roading. The truck pan is best for holding oil, but can also be too deep depending on suspension and hoodline layout. Most factory transmissions use a thick-cast lower torque-converter cover that ties into this oil pan for added strength, but we haven't found any aftermarket torque-converter covers that can be added to the older transmissions like the TH400 and TH350. If you know of any, please let us know as this could be a great upgrade component.