I made a post a few weeks ago about this, but I have since had the head checked for warpage and replaced the head gasket with a felpro. It is still leaking oil into the #1 cylinder. I have just rebuilt the engine and had the head rebuilt also. I put close to 750 miles on it when it started cutting out and come to find out the # 1 plug was covered in oil and it was even coming out between the exhaust manifold and the head. So I pulled the head had it checked and replaced the gasket and still having the same problem. I also bought a new torque wrench and followed the instructions to the "t" on tightenning the bolts back down. Any Ideas. The only thing I can think of now is either the Rings or the valve seals.