Does everyone here with DS seal up the engine to maximize vacuum, ie; plug up vents like on the
oil breather cap, etc? I believe you're typically supposed to have a small dia vent line from the crankcase running to the DS tank, but otherwise seal it up. My factory race engine has the old Shelby American dry sump setup, however, which I doubt has anywhere near the suction power of modern setups, so have been vacillating on how necessary it is to make sure the crankcase is sealed......with very low vacuum it may be better to vent?