Doug Hargrove's Heating and Air Conditioning
In my Crown conversion I fabricated a heating and cooling unit which was mounted in the engine compartment. I modified the stock heater duct to connect to the fabricated unit. The stock heater controlls are used with the addition of an AC switch. A panel was fabricated with an AC discharge mounted under the dash with control switches. The amount of air flow is restricted due to the size of the air duct coming through the floor. A booster fan is installed behind the dash ducts to increase air flow while the AC is on. The defrost control box under the dash was redesigned to provide three air paths, dash, defrost and floor. The fan speed resistors were changed to match the high flow fan from a Dodge Stratus. Everything works with a few notable issues - the heater is not as hot as the Corvair (no 300+ degree air from engine) and the AC has limited flow (air duct restriction).