...Good point with the vent tube lengths.

The metering plate vents and jet extentions will help with this a little as well.

I had the same problem in my Mustang. When I would corner/turn hard, the engine would start sputtering and start to die and I would have to slow down and pedal on the gas a bit to keep the engine running and from dying. Same thing when braking hard.

The carb had been rebuilt in spec to my engine but they failed to install the fuel baffles that help keep the gas from spilling from the vent tube.

if you dont have a carb spacer get one they are cheap and help alot.

Problem with that is the hood clearence. Ill go down there today and see if that's working as they do want to put one on.

so did you fix the problem or still scratching your head.