[awfink55]

Had the same problem with my 1955 Thunderbird, which was livable for many years. When I had to switch to 10-15% ethanol the problem became even worse. Replaced the carb with a new Edelbrock, new phenolic base plate and blocked the manifold choke heat riser passageway. Never really fixed the problem. Sold the car soon after. My ERA has a turkey pan which I feel reflects the heat from the engine and the carb.