Originally Posted by FINO
I figured out my problem. My carb float bowl is not like other rochester bc carbs. Here is an image of what the bowl should look like.

http://bangshift.com/assets/galleries/3138/goliath_carb_35.JPG

Mine is the same except where the hole just to the right of the center, there is a small recession and a bronze or copper tube sticking out. That bronze tube mates with the top section. Anyway, on mine it needs an O-ring to seal it from gas in the bowl. On turns or braking hard, the gas would enter that tube/hole and kill the engine. I put one on and it seams to fix the problem 90%. The O-ring I put on it was the only one I had and it is a little too big, tomorrow I will put an appropriate size one. Today's test ride was much better than yesterdays.

The carb is a rebuilt unit from advance auto parts. About a year old. It runs great.

I just rebuilt my rochester carb and the kit came with a little o-ring I didn't need on my carb. I was looking at the blow-up diagram and it says: "O-ring - vacuum channel tube (partial-starting 1965 models)" I'm guessing you were getting gas sucked into the vacuum port causing an overly rich condition.