I have my Holley mounted higher than the original SU location; and its
mounted horizontally rather than vertically.  I have no problems whatsoever
with this installation.  Maybe the line between the tank and the pump is
cracked?  It doesn't take much of a split to let air in and cause fuel
starvation problems.  Ask me how I know!!
Tad
From Mjsprite at aol.com:
What is the mounting position of the fuel pump in relation to the fuel
tank?
My Facet is above the fuel tank and I'm experiencing a dry bowl on the # 2
carb after several hard accellerations in my 1380. I went to the Mallory
site
looking for higher volume pump and they say that all electric pumps should
be
mounted below the tank level. I'm just wondering if I need a new pump, or a
new  location. Fuel filter and lines are clear.
Mike
 
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