12. When building from scratch, you need to make sure the oil pump pick up is at least 1/4-inch from the floor of the oil pan. When working with a pump with an integrated screen/pick up like Moroso’s billet spur gear oil pump that has a 061-T6 billet housing, just put some clay in a small bag and then set it right on top of the oil pump. Then install the pan with gasket. The pan will crush the clay and show you exactly the distance you have.