Manny,
Let's see what jet you have and if your floats are set correctly. As long as you have the top off, blow out every port you can find to clear any junk from the idle circuit. See if there is any change. By the way, have you put a kit in this carb? If not, it may be a place to start.
Let us know.
Mark

1951 Chevy 3100
Some days you get the bear. Some days the bear gets you.