I dont think the coolant would bring the carb up to percolation temperatures as the carb is somewhat self cooling when running. oyu want to add heat when running, exhaust is the fastest heat you can get short of an electric carb heater.
I somewhat agree. But up here, when temps are in the low 60’s and humidity is high frost will form in the carb. I have seen it.
But the solution is the warm air intake built into the air cleaner.
The time it takes to warm the coolant from cold start will still allow the frost to form.
Seems 4bbl carbs are less succeptible to this.once engine is at operating temp,the frost is rarely an issue
