I'm currently working on my 1970 chevelle. The car has a SBC 350 and I just put in a new 2 core aluminum radiator. While letting the car idle for about 5-10 min, i start hearing the coolant bubbling, like its boiling. Then coolant fills up my reservoir tank and starts over flowing. What can be the problem?
BTW my idle is roughly set at 1,000-1,100 rpm.
First the question of why you changed the radiator should be asked . Was it over heating ? If so , sounds like it still is . Need to pressure test to make sure you don't have a blown head gasket . Also need to check the thermostat .
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