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Old 05-08-2023, 07:38 AM   #5
Joyridin
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Join Date: Sep 2020
Location: Cleveland, Ohio
Posts: 488
Re: LS3 Thermostat issues

Around 2014, they changed the thermostat style very slightly. Most aftermarket housing show something like 2004-2018, but that isn't the case. I bought the older style and opened up the hole where the thermostat mounts by about .05". I have been running it for 7 years with the LS3 thermostat and no issues.
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