you need to do is remove the 'choke horn' housing
away from each side of the center boss and vent
tubes by milling or cutting carefully with a
hacksaw, and clean them up with a file or die
the bowl vents
HOLLEY, AED, QUICK FUELS: (some
are integrally cast or some have steel inserted
the venturi's at the front and the back just inside
the 5 1/8" neck diameter).
front Vent is OK if it is not over 1 3/4" high
as measured from the carb neck surface (where
an air cleaner would normally sit on) and the
rear vent needs to be kept no taller than around
1 1/4' When you cut the vents make sure you angle
the top about 45 degrees with the tallest part
of the angle toward the center of the carb and
the lowest part of the angle toward the bowls.
Demons all you need to do is lower the rear vent
you will need to remove the front and rear bowls
and put a rag in the top of the carbs to stop
filings going down into the air bleeds etc.
you are not confident to do this, any performance
carburetor or competent machine shop could do
this for you. It is a common and relatively small