[concobra]

Edelbrock carbs. are very sensitive to float adjustment. A 5 degree engine tilt could effect the conditions you are experiencing. As with any fluid, gas will move to the area/height of least resistance and under hard braking or cornering gas sloshes up the fuel circuit and into the manifold. Try setting the floats at the lowest possible level without running out of fuel during full throttle extended engine pulls. It's a matter of trail and error to get the level right.

As an example of this fuel overpull. Have you ever watched a carbed race car dive into a corner hard with heavy braking then upon exiting the corner the driver opens the throttle and a large flame shoots out the exhaust. This is caused by fuel sloshing up the main circuit and dumped into the manifold.

Hope this helps.