Hey Back in the day I never had money to buy the deep pans.All of the 440s and the 383 had stock pans. Just in the last few years I have put some deep pans on by owners request.We even had some two mile runs on the interstate with them chevys and fords and the oil pans never ran dry . I have always ran Melling pumps(M63HV) on Big Blocks and clevite 77 full groove Bearings.