I am having a severe problem with a 440, with headers and with minimum air space, overheating when turned off. The compartment gets so hot that I cannot grab on to the Holley filter which is placed 4 inches ahead of the fuel log for the Holley DP 4150. The fuel boils out of the carb and the car is next to impossible to start (WOT and crank for 15 sec and leave "idle" at 4,000 rpms+ until bowls fill back up). I have looked at wrapping the headers, insulating the fuel line and filter and fuel log. I have evaluated putting in a return line from the carb to the tank by use of a regulator with a return outlet. Here is why I am placing this on the heating , cooling section of the form. I'm thinking that the simplest way to get the engine compartment cooled down when I stop the car is to bring cooler air into it and displace the heat from the engine and headers. Question: If I replaced the stock fan with an electric fan(s), can I regulate the fan staying on until the temp in the compartment comes down to a point where it will not boil the fuel (approx 170 degrees)? If that concept works, will it be too big of a drain on the battery? What kind of thermostat would be needed to kick the fan on and off until the ambient temperature in the engine compartment is cooled below the 170 degrees? Any other ideas to solve the "overheating problem"?