baby refuses to burp

[olddog]

After putting the intake back on, I pulled the temp sensor out of the back of the manifold, and jacked the front wheels about 8 inches off the ground. I filled it until the open port was full, and installed the sensor. Then I pulled the plug up by the thermostat housing and continued to fill unto that port was full. I replaced the plug and topped it off. It set over night, and I topped it off again. Then I took it for an easy drive. The next morning I topped it off again. I repeated the easy drive and the level stayed full.

Now, I filled it with the same coolant I drained out, as it is new. However I stll have a little over a pint of coolent left that was in it before. I took it for a hard run and it never got over 180. I let it idle with the fan off until it got up to 200 and shut it down. I could hear water boiling back in the engine and it puked into the over flow. It never did that before and I have shut it down at 205 before. I turned the fan on and started it, letting it cool down to 180. It is still full when I pulled the cap. There has to be an air pocket in the heads, but darned if I know how to get it out.

Help.