Hard to start when hot

[61K T/A]

I'm not having a warm start problem but I installed this heat shied as a  preventative on my BB. https://www.summitracing.com/parts/qft-300-4013qft

[dave73]

The possibilities keep piling up...

I'm going to slowly cross the easy things off the list (adjust timing, make sure carb is dialed in correctly, add a carb spacer, insulate the fuel lines) from there I'll report back in the next few weeks.

Thanks for all the suggestions thus far

[61K T/A]

Did you look down the barrels to see if fuel is coming out of the nozzles when  starting hot? If you have fuel then it might not be a fuel problem.

[JS29]

Holding the gas petal to the floor to start it  would led me to be leave fuel is trickling from carb into the intake.    

[dave73]

Holding the gas petal to the floor to start it  would led me to be leave fuel is trickling from carb into the intake.    

What causes that?

[GrandpaKevin]

Holding the gas petal to the floor to start it  would led me to be leave fuel is trickling from carb into the intake.    

What causes that?

Stuck floats and/or needle and seats often caused by todays fuel that gums up carbs, especially if the car isn't run for longer periods of time.

See if fuel is dribbling out of the carb, especially the carb boosters, when you turn the engine off...often you will see light smoke coming out of the center of the carb.
This fuel dribble will flood the engine out and make it start hard, it can also make the engine want to stall at idle.
The fuel dribble will eventually stop after the engine is turned off and the leaked fuel will evaporate after the car sits for a while so it will start easy again.

[Plumcrazy72]

@dave73chally
I know this is an old thread but Did you ever come to a conclusion on what it was? I have this exact same problem.

[dave73]

Added a spacer and a heat shield and it seemed to resolve the issue. So I'm guessing it was fuel boiling in the carb.

[Plumcrazy72]

Added a spacer and a heat shield and it seemed to resolve the issue. So I'm guessing it was fuel boiling in the carb.

Thank you, do you recall which one you used? there are so many to choose from