Hot Rod Forum : Hotrodders Bulletin Board - View Single Post - 350 sbc running hot on highway
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Old 06-24-2010, 06:23 PM
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DoubleVision DoubleVision is offline
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My car would do something similiar to this. After checking over the whole system and finding nothing, I went back to what I started with, the T-stat. It was a new 180 degree unit. In town, ran 190, get on the interstate and do 70 the temp would climb to 230 which made me uncomfortable. I checked the stat in boiling water, opening temp great, closing temp off, after the water cooled down past 150 the T stat was still wide open, down to 120 still wide open. Got a new one, tested it before I installed it, it too was bad, next checked out good so I used it. I`ve found over the years the quality of T stats has really went down, I even tried the high dollar 6 bucks a piece jobs to find they too were bad right out of the package. Check your T stat, it may save you a lot of work.
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