Dual fuel tank problems

[mxcobra]

With my new motor im going to need some serious fuel. Drank down 6 gallons in no time. If I put tanks starboard and port on the gunwalls. If I run the out put fuel lines. dual into the fuel filter would it suck on both tanks at the same time and keep them evan?

 

[Bondo]

Nope,.... You'll need valves to switch 'em,....

 

[stonyloam]

In theory yes, but probably not. If your anti syphon valves are not exactly the same it will probably pull fuel from the tank with the least resistance. You might want to add a couple of shutoff valves so you can switch tanks manually. You want to do that anyway, if you draw one tank dry you will probably not be able to draw from the other. Another option would be an electric fuel tank switch, like I had on my old Chevy truck with dual tanks, just make sure it is marine rated.