My engine is a 350 Chevy engine, and it has a B&M Street Blower (5lbs boost) with a Holley manifold referenced power valve.

The problem I am having is that if I am in stopped traffic for a period of time (i.e. a rod run consisting of 5000 participants, and stopped or moving 1-2mph for 5 minutes)...when traffic then picks up the engine surges. For example, it's as if I were pushing the pedal, letting up, pushing, letting up. This happens until I get moving to 30 mph for a few seconds then clears up.

One thing I am sure of is that it is getting quite hot under the hood...and when I get moving the air flow relieves that heat. I expect it is heat related.

That being said, I'm not sure in what way.

Any thoughts?