I am putting in an ATL "Well Cell" in my SVO and removing the OEM gas tank and pump (85.5 with single in-tank pump). The fuel cell has a duck-foot pickup to a -6AN fitting on the top of the cell. I would like to be able to just use an externally mounted Walbro 255 pump fed from the -6AN fitting rather than put an in-tank pump in the fuel cell. My only concern is that the Walbro is a pusher pump and I am not sure how well it would handle having to draw fuel from the bottom of the cell and then up and over the top to feed the external pump. If I use a 12 gallon cell it is 9" deep so the pump would have to draw the fuel up those 9" and then it would be downhill to the pump.
Normally I wouldn't have even thought about it being an issue, but inasmuch as the 84 and 85 SVOs had an in-tank low pressure lift pump to feed an external high pressure pump it makes me think that he external pump isn't very good at pulling fuel to it's inlet.
Anyone have any experience with using an external high pressure pump in this manner?
Thx!