Hey T-beast,
Check out the diagram on page 8 and the description on pgs 7-8 of the supplied Edlebrock manual link. It describes the ball and weight as being on the discharge side of the pump and the diagram shows it clearly; the 'lip seal' is the inlet side 1-way valve. I assume that Edelbrock is properly describing their carb operation....in their manual.....
I am familiar with Holley's doing as you say....
Regards, Mark B.
