Insane fuel tank thought!!

[EagleChief]

So, a little background on why this thought came to me - I'm adding a fuel tank under the bed for my LS swap. I still have the stock tank behind the seat. The plan is to remove it. But, my project is going on year 4-ish.

Here's my thought/question/discussion while laying in bed awake in the middle of the night, or when I wake up in the middle of the night and can't go back to sleep:

I wonder if I can leave the original tank behind the seat and re-plumb it to feed into the tank under the bed. Would it be possible to have the stock fuel tank as an extra supply on top of my fuel tank that is going under the bed? I know it would need a valve of some sort to restrict the flow into the lower tank. Gravity feed wouldn't have a way to shut off, as the tank is higher and would continuously feed the lower tank. Could I run a pump from the original to feed the other and then the main pump to go from there to the engine?

I know it's a dumb idea, but like I said. Sometimes I can't sleep and this is something that I pondered while laying in bed one night.

[72c20customcamper]

Just use a switch to go from one to the other . I used one in my 68 for the keg gas tank I have 13 more gallons now

[jaros44sr]

These trucks did come with brass vavle for extra tanks, you could mount the vavle in the stock location

20191005_074950 by [url=https://www.flickr.com/photos/97391199@N06

[57taskforce]

You would have to have a pump for sure, because the lines don’t gravity feed on the stock sending unit/tank setup. I don’t think it’s a dumb idea. I’ve thought about doing similar for my factory auxiliary tank setup so you don’t have to mess with the brass valve when the first tank runs out. As you see it running low you hit the pump in the cab tank and have it fill the under bed tank. The sending unit switch from a factory aux tank truck would be perfect to be able to see what both tanks have in them.