Question...what is the normal running temp for a 1972 340

1968FormulaS340 said
That's just not going to happen at 65+ mph unless he has some big air diverter mounted to the front of his car.

it happens on new cars. that's why they pack the cooling modules with seals to keep the air from going around the radiator and condenser.

If the fan is spinning too slow, it can block the airflow at highway speeds also.