Re: Holley question

[Mr. Chevy]

Back in high school I knew a guy who messed around with the "Quadrapukes" as we jokingly called them. But all jokes aside, he could really fine tune those things to where there were very responsive and I think ran just as good if not better than a Holley. But I do think that a Holley that is tuned right is an excellent carb. I was having problems with the vacuum secondaries not opening on my Holley carb. A friend of mine is good with tuning Holleys. He made up a real nifty vacuum secondary diaphram/piece that eliminated the check ball. He installed a screw to replace the check ball. So all you have to do is either turn the screw in clockwise to delay the opening of the secondaries or back the screw out counterclockwise to advance the opening. We bench tested it first with a vacuum gauge and set it up to advance/open rather quickly. We also installed the weakest spring inside the diaphram. What a HUGE difference this made in the way the car ran. It is very easy to adjust also. I just remove the air cleaner and adjust this screw to whatever setting I want. You will know if it is too far advanced because the car will fall on its face if the secondaries are opening too soon when you stomp on her...

Rich