<VV> Re: electric fuel pumps

[lewrish]

I do believe all the electric (car) fuel pumps have some sort of pressure 
relief valve or other mechaism built in, so that they should not overpower 
the carb needles. Ones I have tested develop about 4.5 to 5 psi at no flow, 
simulating needles shut. Dont see that a reverse flow situation might 
happen, not to say it could not. The mechanical pump check valves are 
designed to allow flow in one direction only, if they are working properly. 
So an electric will pass fuel thru the mechanical, no problem. If you want 
to use the electric and keep a stock look, I suggest removing the actuating 
rod below the mechanical pump, and using the stock fuel line routing.  IMO, 
the mechanical requires more HP to operate than the electric.
Lew