Belching flames
My car has developed a problem. Sometimes, not always, after doing a burnout I stage the car. Then the top bulb comes on, I release the delay box button and stab the gas. A huge ball of fire rolls out of the scoop and the car dies. I refire the car and it runs like it never happened. It is a very mild 468. Hydraulic cam, holley 750, edelbrock dual plane intake. It seems to do it when the engine is cold. So I tried staging at a higher temp. That helped until we raced this weekend and the air temp was cooler (50's-60's). It did it's "Puff the magic dragon" fire show 2 out of 4 runs. I had the carb worked on last winter and it was fine until this fall. The guy that worked on it said it might be a little lean but now both sides of the car are coal black.
We are going to take it off, change the jets and probably remove the power valves.
Any other sugestions?