I have to respectfully disagree with general complaints against Autolite\Motorcraft 2-barrel carburetors for cold weather use because when set up properly they are wonderful carburetors. I lived in Missouri for several years, and while it's nowhere near the coldest state in the US, sub-freezing nights are very common in the winter and it's not rare at all for the wind chill to go negative. None of the motors I've ran with a stock 2 barrel carburetor ever failed to start or run well while warming up.