[Ant]

Running a wide alloy foam filled tank, this tank is designed to have fuel lifted out of the top fittings on tank much like a lot of racing fuel cells. Pumping out of tank with a Holley red and a small back up pump so fuel can pumped from each side of tank, then to the fuel pot where an Aeromotive SS pump shoots the fuel to the bypass etc.

I read where Holley specify their pumps inlet/outlet should be level with bottom of the tank although I see a lot race cars etc pulling from the top, is it necessary to run non return valves etc?