Re: 71 350 running hot coolant backup up problem
Did the engine sit around with the intake or thermostat housing off? I had a bunch of engines in a shed become apartment complexes for mice. Like to never get all the nests out of the water jackets. A nest sure would cause a flow problem. I would think you should have found some junk in the thermostat as many times as you have had it out, but just a thought.
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