When I first fired this engine up it smoked continuously and blew oil all over the place. The oil pan, valve covers, timing cover all blew oil out. The valley pan would literally fill up with in 10 miles of driving. I removed and sealed the leaks the best I could and bought a vacuum pump which fixed that problem but the smoking problem still existed although it was starting to smoke less the more I drove it. The last time I took it out it lost oil pressure about a 1/2 mi from the shop and now has a knock.
Sounds like this engine had issues from the getgo. Your whole problem could be right here. Eating bearings, and lots of crank case pressure. Sounds like bad hone/bore/rings, my