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					Originally Posted by ShawnBoyMoody  Yeah. At highway speeds. I'm thinking the water is circulating TOO fast without the thermostat and not staying in the radiator long enough for proper cooling? 
 Thoughts?
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 You need to run a thermostat.  Gives the radiator time to cool  the water.  I used to run one without a thermostat and it never cooled properly.  At the track it is different.  Driving on the street you need a thermostat.