When is coolant temp too hot. About 216

funwithfuel said

Another thing to look at is timing and fuel. Too much timing = heat just like too lean a fuel mix.

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I was thinking along the same lines.. I changed the intake and carb on my Dart and went from a car that ran around 190, to a car that ran 210-230 and if I sat at a light or anything it would climb.. turns out I was running too lean.. fattened her up a bit, and she runs back down between 190-200