khansmith First a thermostat is the way to go. I run a 180F one in Jersey. Next go to Pepboy or autozone and get a thermostat for a Dodge BB. The flow on Dodg is 30% more than the FE one. The diameter is 63 or 64 mm total If you have a grinder you need to remove 1-2 mm and if fits perfect. Drill an 1/8 hole in the housing for "AIR" to excape from the motor. Make sure you mount the hole to the top side. A 50/50 of
antifreeze to distilled water work great. Use the Green stuff, not the 100,000 mile orange. Water wetter 1 bottle also. Getting all the air out of the motor will take a couple of running cycles unless you have a coolant machine with a vacuum cycle to remove most of the air. Try to run coolant hoses with wire supports inside. Piping works better with short hoses or ends. I will try and get the the right number for the thermostat from Pepboys after the holiday. There in NJ are you at? I'm in EB. Rick Lake