Had to make up a little something to test a heater core. Radiator shops are non existent around these parts necessity is the mother of invention. Took a lower therm housing and cleaned it up. Made a little plate to block it off. Years ago when I was actively racing I had a dragster and I use to use this Moroso top instead of a thermostat. So I dug that piece out of retirement. Then I grabbed my vintage radiator pressure tester and ordered some hose block offs on ebay.
