Anyone install Edlebrock aluminum heads ?

converter stall!
left foot on brake, right foot pushing the skinny pedal to the floor. When the tach stop moving or the back tire start turning.........That's your STALL!

Vapor lock?
have found many ways to combat that.
First and foremost! make sure the fuel line clip is still holding it to the frame rail next the the headers on the right side! Take a rubber hose 3/8 fuel hose and spit it down the middle and install it were the header are the closes to the fuel line.

If you have a vent tube in your tank make sure that the end is not plugged with bugs
Mechanical fuel pumps will heat soak in hot weather and fuel will boil right there.....Make a small air dam so that its being cooled by the road wind.

As mentioned a heat dam under the carb.

But the only way to truly fix a vapor lock 100% is a electric fuel pump in the fuel tank area and a FUEL RETURN LINE BACK TO THE TANK.

When the fuel is being returned back to the tank the fuel has a much harder time vapor locking.