Living in Florida has its disadvantages. For starters, sitting at a red light gives a car the chance to boil itself into an explosion of coolant, water, and radiator hoses. When our Mopar musclecars were built, the factory supplied an ample cooling system for the engine and the accessories supplied with the car. That was 20, 30, even 40 years ago in some cases, and aging parts and aftermarket modifications have changed the playing field a bit. The adding of items such as larger camshafts and higher compression ratios create more heat within an engine and the cooling system needs to play catch up.
An integral part of any cooling system is the fan. Be it a nonthermal or thermal coupling, or direct driven, the factory used these three versions with great success. It has long been known, however, that the effort exerted by the engine to turn the fan will rob a certain amount of horsepower. Even though a nonthermal coupling fan is the most efficient of the mechanical drive fans, horsepower is still used to rotate it. If you need to free up every last bit of horsepower, an electric fan can be installed, and since the engine has no connection with the fan, it requires no engine energy to run. The little stock 360 in the Valiant needed every last bit of horsepower it could muster, and an addition of an electric fan was a definite must. We contacted Flex-a-lite and ordered one of their Black Magic universal fans, PN 150.
With the installation of an electric fan and shroud, Flex-a-lite recommends at least 70 percent of the radiator's core be covered by the fan and shroud. Although the Black Magic fan is designed as a puller-type fan, by turning the blade over and reversing the polarity of the motor, it can be used as a pusher. Keep in mind, a fan is more efficient when used as a puller fan as opposed to pushing.
Reciept:Flex-a-lite Black Magic fan PN 150 $199.99** TOTAL: $199.99**Priced through Summit Racing