[t-bird-art]

Vapor Lock is unlikely in Cold Winter. The Ford Carb on the 66 has a "Hot Idle Compensator" inside the carb designed to prevent vapor lock during Summer when it just gets too hot under the hood. Need correct gasket between carb & intake manifold . I have seen gas boil in the carb bowls because the insulating gasket was not right. FelPro Gaskets are right. After 15 minutes shut off, with engine OFF, look down the throat of the carb to see if it is wet ( with Gas) . Sometimes it is hard to see. A small strip of cardboard will soak up the Gas and you'll see a gas stain on the cardboard. ANY gas here means carb is leaking into Intake manifold. It should be dry as a bone.