Originally Posted by Noob X
It cuts the gas off and loses power for a second then kicks back on like if I clutch kicked
You snuck that one in on me while I was typing..lol
So that is a stumble. Not a stall.
As I said there are several adjustments on the Holley that can address the problems you are having. Since you don't know if the PO set the carb up correctly for the car you should probably start from the beginning on the carb adjustments.
Here is one I found in just a few seconds on youtube,