Sure sounds like fuel is boiling into the engine. But surprising it would happen with a stock engine. There is a heat spacer for most all brands of carbs. Edelbrock for example is about .33" thick. Hood clearance problems depend on the thickness of the air filter you are using.
I would call Summit and tell them what you have for a carb and see what they recommend. It isn’t an expensive part….maybe 10 bucks and I think it will solve your problem…..been there, done that