Thanks for all of the help. I had rebuilt this engine once myself when it was in a different Ford, but when I put it in the Cobra I had someone who knew what he was doing rebuild the engine for me. He added an Edelbrock intake manifold and heads. I am not sure what gaskets he used. Unfortunately, for both of us, he died before I put the engine in the car and started it up.
I did not realize I had to re-torque the aluminum heads after the engine was started. I also did not realize that the manifold gasket could cause this problem. I checked a few of the rod bearings while I had the
oil pan off and they looked almost brand new (the engine only has a couple of hours on it).
I think I will re-torque the head bolts and then try the pressure test first.
One other thought, I had a lot of problems with my expansion tank leaking, could I have gotten
antifreeze in the
oil somehow that way? My distributor seal looks good or I would have thought it could have gotten in that way.