[freekintoad]

1971 Boss,
I am going to assume that you have a surge/and or a recovery tank
on the car. If you must continually add coolant to the system, after
you shut it down, and the car cools off...you may be over-filling this system.
There must be some room in the system for expansion and contracting of the coolant. 200 to 220 is fine concidering that these cars don't have much room for large radiators. Install a 7lb. cap. If the coolant ever reaches approx.
240 degrees, the cap will release the coolant [boil over] before you damage
the engine from higher temps. If the engine temp is 200 degrees, and the outside temp is 85 degrees, the engine will run 1 degree hotter for every 1
degree hotter the outside temp is. An engine temp of 220 should be the max that you want to see. Any hotter will require changes to be made to your
RAD.