How much horsepower does a edelbrock 650 4barrel carb and an Edelbrock performance intake add?

It depends on what you start with and what motor, I had a quadrajet and the stock iron manifold on my 350, and i gained (i guess) around 30 hp, but i was most happy that it started easier and my gas mileage went up by 5 mpg. From 9 to 14 in my 85 suburban.