Good job, DADS50
Nice report Snowman51
I have a recirculating heater in a breezy (no door/window seals) 1954 truck that kept me so warm that I had to take off my coat (in 4 degree F at 55 mph).
You can hope that yours is up to that performance.
There were 2 Chevrolet-brand truck heaters: the recirculating heater and a more-expensive temperature-controlled Air-Flow/Fresh-Air heater.
Post a photo or two and we can tell you what you have.
