[WestCoast]

put at least a one inch phenolic block under the carb to insulate from the intake manifold, and plug the carb pre heater passages in the intake manifold, , it runs just behind and under the carb in the manifold, it was designed to warm up the carb faster in real cold weather, its not needed, aluminum manifolds transfer a lot of heat to the carb and causes the carb to boil the fuel out of the fuel bowl and cause a flooded condition