Using Holley 5200 Carb?

Has anyone on this site "using or used" a Holley 5200 carb on a 250 cu in or bigger?
Looking for better fuel mileage with the small primary 32mm barrel. Any information will help. Thanks in advance.

Grandbabymama's 73 Mav with 250,auto,3.00 ratio got better driveablity.Wish I could help you on mileage question,but she only knows floored and off pedal.
I get good mileage in my 62 'chero with the 200,I like those little 5200's.

good stuff frm MecRick on the similar 240/300 thread.
(holly 5200 by name)

Luvin ford6 taday !