amal

I have some problem and I need your help

My engine is Chevy small block and the engine got off when I have sudden brake or heavy turn.
I know the problem because of the Holley carburetor and I change the carburetor to another one and the problem is same. I tried with the stander carburetor and no problem.
I tuned the float level and idle air screw, the engine running well but the problem is still.
What should I do to avoid this problem?

Thanks a lot