It never over heated but it was getting there. Like I said if I had the AC working it would have been game over. I’ll have to carry the IR gun or put a temp sensor in it next year. The motor will be more broken in and looser by then too. This is all reminiscent of the trouble that I had with the Coronet in the heat. I thought I could avoid that with the aluminum heads and the four core radiator. I had good luck on the duster with the Toth heads and four core radiator. That Car never gets hot ever. The gauge was right at the max normal range when I was at the off ramp red light after cruising for 80 miles an hour three hours. Once I hit the highway it would come down to about 3/4 to seven eights of the way to the max normal range. The Duster in the Dart typically have a hard time, even getting up to the middle of the normal range
