you already have an existing SC500 for a Holley
Carb there are three modifications that you
will need to attend to. If you are ordering
a scoop new then specify a demon Carburetor
1 The notches in the SC500 base plate for the
fuel lines will have to go lower and slightly
wider than for Holley Carburetors. The Demons
are slightly different here, see pictures below.
You will have to massage the underside of
the plastic adapter. This is necessary because
the float bowl on the Demons are level with
the neck and the Holleys step down about
3/16", be careful you dont grind through
the plastic adapter when doing this (if you
did you could re-seal it with some silicon).
Use a rotary file on a die grinder, see pictures
3 The rear bowl vent tube needs to be cut down
from 1 1/2" to 1 1/4" overall height.
The front vent is ok, of course all SC500 applications
need the choke