1991 Geo Metro engine blowing oil out exhaust

Engine Mechanical problem
1991 Geo Metro Two Wheel Drive Automatic

I have reringed this engine. Had valve job done and it blew a gasket. When I put it back together drove it about 100 miles, it started blowing oil out the exhaust and smoking beyond belief. When the head was off I turned over engine to make sure it was getting oil.
I put the head back on and oiled fine, now its really oiling fine. The whole back of the car is oiled up.
I dont have a clue as to whats going on.