[Phillyfanfrombirth]

Holleys are never dialed in out of the box... that is the fun in having them.

Was that a vacuum secondary?

If so, you will only have the one metering block to adjust (tiny screw on both sides) turn in until the idle starts to drop off, then back off 1/8 to 1/4 of a turn... If it is a double pumper, then you will need to do the same on both metering blocks (which is the block between the fuel bowl and main body of the carb).

The floats *should* be right, but to be sure, when you remove the sight plugs (fat screws on the sides of carb) fuel should barely fill the threads of the plug as it runs... if it is too high that fuel comes pouring out, or too low that the fuel is nowhere to be found... adjust accordingly with the screw/nut combo on the top of the carb... again, there will be one in the front half of the carb, and one in the back half.

There are also adjustments to be made on the accelerator pump... which could be the culprit if you are dumping too much gas on hard acceleration. That is the screw and spring combo on the corner of your carb. If it is a double pumper, there will be two.

If you really feel like having some fun, pick up a Holley trick kit... that will come with different squirters and pump cams that can make the tuning of your carb and engine both fun and nightmarish... Too much information isn't always the cure for the novice, but it is one hell of a way to learn, burnout by burnout.