Quote:
Originally Posted by NorCalCobra
I have been told by a few sources that running no thermostat can cause the vehicle to run hot. The theory is that with a thermostat installed, the coolant stays in the radiator longer, therefore getting cooler. Without a thermostat regulating the flow, the water passes through the radiator too quickly and doesn’t have time to cool off enough. Worth a shot. Only a couple minutes and a couple bucks to throw one in.
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This is true. I've tried on a 427W. It might be helpful for you to gut a thermostat, and just use a restrictor plate.
Air flow is critical. Most fans do nothing above about 40mph or so. For slower speeds, you need as much air flow through the radiator as possible. A big fan, proper shrouding, and closing the gaps around the radiator will maximize your efforts.
Also, as mentioned above, pay attention to other factors: Incorrect timing, lean mixture, etc.