Ah, when talk digresses to Holly, Carter, Rochester Quadrajet, Autolite you can tell we's be from another era, maybe even dimension.
7, if your Holly is not properly dialed in you'll get a rich shot that is as bad as the lean stumble. A well downplayed fact is that none of the lower grade Holly fuel pumps are not well matched to their line of carbs. I ran Holly blue on my Boss 429 because the Holly rep I spoke with told me it would be fine. It wasn't until I ponied up to a Black at 2x the cost did my Boss come alive. Recently I was stunned to see a Holly 735cfm vacuum single pumper is $600 or more. The double pump 750 is what, $800 or more now. Man I remember buying Hooker or Hedmans for $100 or less on sale. Cragar SS steel chromies for $39/each.