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Old 05-07-2023, 11:10 PM   #4
mongocanfly
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Join Date: May 2015
Location: Alabama
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Re: LS3 Thermostat issues

If its leaking around the housing, sand the mating surface to clean the finish off it.. mine was chrome aluminum..then use a good silicone sealer on it.. I swapped mine to a straight housing like you have..and it leaked before I even tried cranking the engine..tried to seal it several times before I did the above..no leaks now..
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