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Got a 76 blazer, 350 with turbo350. Regularly after it warms up when ever I come to a long light the radiator will start puking out the overflow tube. Is that a bad thermistate?
If the radiator cap doesn't seal right, then the pressure will not build inside the system. The higher the pressure, the higher the boiling point.....I know, I just had my thermo midterm.......I guess judging on how good that went...don't listen to me lol!