Not Ranked
Just wanted to give folks an update about my original post. A couple of weeks ago, I made several changes to my configuration, and the erratic water temp issue appears to be solved. My car has a heater and originally both heater hoses connected directly to the water pump. My water temperature sensor was plugged into the intake manifold directly behind the thermostat housing, and the small port on the thermostat housing was stubbed off.
Now, my temp sensor is on the driver side of the intake manifold, one of the heater hoses is connected where the water temp sensor was, and I have a short bypass hose between the water pump (where one of the heater hoses was attached before) and the port on the thermostat housing. PLUS, I added a Kirkham small block surge tank to eliminate the chance of an air bubble in the intake manifold and the hassle of burping and reburping. It looks great and I don't have to keep looking at the temp gauge every few seconds!
Please see the thread about small block surge tanks started by David Kirkham or my gallery for pictures.
Many thanks to all that have given suggestions about how to solve this problem!
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