MAKE SURE you Open the Edelbrock carb & not only set the float (gets banged up in shipping) but inspect the jets. We've had Nothing but problem since they were bought out & moved production south...
Some will come with cross threaded jets, other's have had aluminum shavings inside still. Quality control is not even a position anymore. They just pump **** directly out & cross their fingers...
They are also Very sensitive to fuel pressure. Anything over 5.5psi will seap sooner or later past the needle & seats...
IF you want any type of performance do youself a huge favor & add a 1/2" or 1" 4 hole wood carb spacer...
Edelbrock 8723 Edelbrock Carburetor Spacers | Summit Racing
The other main issue with these carbs is they are super bad on heat soak & boiling fuel as they hold so very little fuel in the "bowl" area's compared to a Holley based carb.