Originally Posted by zedzed
I am considering installing the above tank into my '71. I am using an EZ-EFI system that uses the external pump provided in that kit. It works fine if the tank is more than half full, but stumbles from fuel starvation when the tank is less than half filled. It appears the fuel pump provided in the Spectra tank is inadequate for the EZ-EFI system. If so, is there a replacement pump that will work with minimal modifications?
I beleive if you are using a external pump, it must be installed at level or below the bottom of the tank. The pump has to suck the fuel from the tank and is pushed by pressure of the fuel as well, so gravity plays at part in keeping the pump fed. Remember there is no pressure on the suction side of the pump.