When we first built my car, we put a flat bottom pan on the engine and promptly blackened the crank. Put the accumulator on to stop that from happening. A band-aid, I know. Since then we have gone to rear sump pans, dual pick-ups, baffles, trap doors, oil system mods, everything short of a dry sump. We were close to minimum weight so that wasn't a problem and we left it on as a safety measure as we could still turn the oil light on using the brakes hard. And I like being able to pre-lube the thing also after it's sat awhile.