Manifold Heater for Cold Climates

The description I would get is, " My car starts fine cold in the morning, back outta the of driveway, it's okay, first stop-sign it kinda runs rough and dies, immediate restart, next stop may or may not stall, rest of the day runs fine."
Carb icing, - hi humidity days with lower temps, we get it often spring and autumn.
You can actually take the air-cleaner off, look down the carb, and actually watch "snow" form just below the venturi, and snow will grow all around the throttle bore until it gets to and plugs the idle port, - the engine will then die/stall.
If you were to not restart the engine immediately, ( 30 seconds) - let it sit so the carb base absorbs some heat, it'd run fine.
Ford introduced an electric heated carb base gasket a few years.
That's why all the "stove and ducting" from the ex manifold to the air cleaner on many models.
Same effect as removing the tire valve core to deflate tire, and "snow" builds around the valve stem where valve cap screws on.
It just takes a few seconds ( a couple of blocks of driving) for heat to warm the carb enuff to stop snow.
It's all about humidity .
Good luck, happy turkey day ! !