Will a 6 qt be enough?

All my oil passages have been drilled bigger for more oil flow. Melling high volume oil pump was used. All mains and rods were almost black when pulled, except for the spun one. Would lead me to believe they were definately not getting oil. If pan was not dry there was definately no oil around the pickup. This was a stock pan w baffles welded in. Have also thought w pumping so much oil that the windage tray and welded in baffles slowed the oil from getting back to pickup quick enough. Eighter way stock pan was not enough oil for this engine. Your lucky if your 340 w stock oiling system stayed togeather w 8000 shifts. Have seen alot of spun rod bearings w only 7000 shifts. I actually have a buddy w a 70 plumb crazy duster that used to be dragged hard in the 80s. This car alone has blown up over a dozen 340s shifting @ 7000. Leads me to believe the oiling system in the 340 is its weak point. And im a 340 nut.