ahhh ... progress, finally! this is why it's important to provide as much info as you can. you could have been on the right track many posts ago.
well, for starters, there's no way a stock pump is going to drive a Holley! hell, it's marginal for the Nikki. get something else ... something that has good FLOW and can do so at at least 7 PSI. i can vouch for Carter and Holley pumps because i have used Carter in the past myself, and my brother used a Holley on his car. you will also NEED a regulator. Holley has two popular ones that i'm aware of. one that serves 4 PSI and less and one that serves 4 PSI and more. get the latter. for what it's worth, you probably want to get a gauge, too - however finding an accurate one is not as easy as it sounds. i used a Summit gauge since i bought my pump and regulator from them. i can't speak to accuracy, but it at least seemed to react appropriately to regulator adjustments.
this is no guarantee that the car is going to run well, but it will definitely put you on the right path. make like a pistachio and get crackin'.
also, figure out what Holley you actually have or you could be in a for a long, frustrating and painful journey.