Still Frickin Hot - Update

[Clois Harlan]

Here is the latest results:

All fluid drained and replaced w/ 20% anti-freeze, Purple Ice, and distilled water. Installed new 16" 2500 cfm fan, new 180 deg thermostat, new sending unit and gauge, new 13# rad caps on rad and expansion tank. Purged all air from system. Head gaskets are absolutely installed correct. Rad has been checked by rad shop and told that it is just like new. New Edelbrock water pump.

Outside air temp is 45 deg, opened 18' garage door and rear side door and set a 20" electric fan in front of car. Started engine and temp gradually climbed to 250 deg in less than 15 minutes. Timing is set at 28-30 deg and engine was running at 1200 rpm. As temp reached 200 degree I removed the rad cap on expansion tank an noticed very little circulation in expansion tank. When temp reached 250 deg I turned engine off and watched the fluid puke out of the expansion tank. I also stuck a hand thermometer in top of expansion tank which read about 200 degree. I am not happy with the circulation at all and wonder what anyone thinks my next step should be?

I am beyond pissed off and looking at this as a challenge but I need your input.

Thanks.

Clois Harlan