1959 Apache

[dsraven]

curious if you have checked the inner cowl areas of the apache. they have a drain hole at the bottom of the cowl on each side and that tends to get plugged up. a quick roll underneath with a light and a screwdriver would be a quick tell on that, simply poke the screwdriver up into the drain hole and see if it is clear or not. when the hole plugs water builds up inside the cowl and drains out onto the floor through the foot vents. this is why a lot of these trucks have rotten floors, step well, door hing epillars and front cab mounts. good plan to block the vent intake if you live near trees that shed but then you will lose that air flow for the vent and possibly the heater if you have the style of heater that has the fresh air intake.