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[PRODUCT REVIEW] Weapon-X 180° Thermostat For LT4 Engine

Rob

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by Hib Halverson

A common modification for a ’16-’19 CTS-V’s LT4 is a change from the stock, 194° thermostat to lower temperature unit. A good choice for a high-performance street application is a Weapon-X 180° thermostat (PN SD180LT1). The goal with that change would be to lower engine coolant temperature (ECT) during highway driving as well as during aggressive driving at higher speeds.

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