Make the bottom of the pickup max 3/8" off floor of pan. Install H/P spring in pump and adjust the screw to be flush with the machined face where the pickup attaches. Be sure to use gasket at this junction and where pump attaches to the block. If the pan does not have the square or diamond shape containment area with trap doors to control
oil flow, this could add to the problem of the
oil getting away from the pickup under acceleration or braking.