The heater you have with the door which blocks the hole in the cowl while at the same time opens the narrow door to the cab actually converts your fresh air heater into a recirculating heater. That narrow door inside the cab becomes an inlet for cabin air to enter the heater core while the cowl hole is closed off.


1952 5-window - return to "as built" condition | 1950 3100 with a 235 and a T-5 transmission