:cry: :cry: I don't know guys there could be 2 things going on here common to BBC's.....the oil pump p/u might have vibrated out or....see as the engine warms parts stretch....and oil pressure is maintained thru the rods and mains dropps maybe 15-20lbs when warm....I had a BBC in the rush to put together forgot to check the rod journals the crank had been turned what I thought was .010/.010 only to find that the rods had been turned another .010 making them .020 under not .010 big drop in oil pressure when warm went thru all the senarios oil filter, adapter pressure relief spring you name it.....found it when pulled old engine down.....silly me :wink: :wink: