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Steve Meltzer Steve I will take a shot. Thermostat is first put it in a can of boiling water and make sure it opens all the way. Is it A high Flow or heavy duty one?? I would go to pep boys and geta thermostat that is 63-64mm. Look at the opens where the water comes through The one the book calls for is small, Look for Part number 0-33342-06978, the outlet side is 1/4 inch larger, more flow. Put and 1/8" drill hole in the top to let the air out of the system. I had the intake off at this time and port matched it to the gaskets, everybody does the intake runner but for gets the coolant passages. This will give better flow and grind off the flashing casts. You may have to go to an aluminium raditor for better cooling. Run the car and put a floor fan in front on high speed and see if it over heats. Put A 180 thermostat in the car also. With it running check the flow. If it still over heats is it possible that the head gasket was put on backwards??. What coolant are you running in the car?? water wetter could help. Do your rad hoses have wire in them to stop a collapes?? I would think you have no air in the system but run the car to operating temp and shut it off, jack the front end up 11/2foot and let it sit over night or go to a garage with a suction coolant kit that sucks the air from the system. Start there Steve and let us know what happens?? Good luck If you want to talk 732-254-3536 after 8:00pm est Rick Lake
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