"The Cab That Breathes". That's how these trucks were marketed.
Over time, they tend to breathe more than when they were new.
Even so, a decent heater should still melt the shoes off the ole lady, as they say.
A clogged up core or a weak fan motor can prevent adequate heat to come out.


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