Edelbrock 1406 whistling

Almost always, 100% of the time, when there's whistling around the carburetor, it's a leak at the carburetor base where it joins the manifold. I have yet to see one that was something else. Also......do yourself a favor, ok? How about using something other than carburetor cleaner to check for leaks? You're spraying something into a running engine that says "EXTREMELY FLAMMABLE" on the label. Stop and think about that for a minute. Water in a spray bottle will find your leak just a quickly and be safe doing it.