Just a thought here, are you sure your
oil lines are run correctly? What is your
oil temp?
I fought these demons once and if you will barely loosen your temp gauge on your intake manifold and allow the air to burp out while your car is running this will almost asuredly purge all the air out of your system. Naturally, once water starts to ooze out of your temp gauge fitting tighten everything back up.
Good luck.
Clois