Perf. Tips Dart Drag Car
Good to seal the scoop to the carb, but you've got to have a big enough scoop to grab the air.
The general rule is a minimum of 30 square inches of scoop opening. Your scoop looks much smaller than that. Also, your scoop looks very low which means your pulling air only from the relatively still air right on the hood. You can still get the vintage look if you can find an old 'boundary layer' type scoop that will get the entire scoop area up off of the hood in order to get a little ram effect. Research some old drag photos from the late 60s-early 70s.