Float level is critical for good operation.
It has to be ballpark to at least work decently.
Look at the list number on the choke tower and find a Holley instruction sheet with the dry float settings.
The bowl can be gravity fed and the carb doesn't care. Once the bowl is full the valve shuts.
It works just like an old fashioned toilet
https://www.forabodiesonly.com/mopar/attachments/upload_2020-1-27_16-11-39-png.1715460157/
Probaly would be good to read on how a carb works.
Chrysler Tech did a decent job on the fundementals in 1966 and 1970
Look here
Master Technician Service Conference - Chrysler's Training for Mechanics
