170 Degree Thermostat

Many have searched the internet and part stores for a properly fitting low temp thermostat for their late model GT500, Cobra, Mach 1, Bullitt, Mustang GT and Boss 302. Beware of aftermarket companies who sell the same thermostat for all Ford modular engines. Those units are designed for the 2V SOHC engine and, if installed in the improper housing, will be unable to shut off the bypass- allowing hot coolant to recirculate back into the engine at all times, reducing the efficiency of your cooling system.

Our thermostats are custom made with the same size diaphragm and bypass control as the OEM units. Each of our thermostats is modified by hand using only U.S. made parts and then quality inspected to ensure consistent opening temps. These t-stats are the only ones specifically designed to fit these applications making them the best performing low temp units on the market!

Additional Cooling System Improvements It is important that the fan settings in your tune are set up properly to see the best possible heat dissipation from your cooling system. Otherwise a low temp thermostat will only be effective when the vehicle is moving because heat cannot be removed unless there is air passing through the radiator. Typically with our 170° thermostat installed your cooling fan(s) should be set to turn on between 184-190° and shut off between 176-182°, if not then re-flash your tune with the appropriate settings. Water transfers heat more effectively than antifreeze so we recommend using the lowest concentration of antifreeze possible for your climate along with a product like Redline Water Wetter. Just make sure you have enough antifreeze in your coolant to keep it from freezing in the winter and always run no less than 20% in a street car. We do not recommend adding Water Wetter to coolant that is more than 40% antifreeze. Most people think a larger radiator will improve the capacity of the cooling system but a big factor that is often overlooked is airflow. Increasing airflow will have a dramatic effect on the cooling ability of any radiator which is why most choose to do so when prepping a vehicle for race use. Some common ways to get more air through the radiator are:

• Increase the size of the lower air dam
• Box in the radiator to force air to flow through it and not around it
• Additional hood and fascia vents
• Additional or more powerful cooling fans