Originally Posted by Leftyizme
Has anyone done this mod on a diesel?
I have a '94 F-350 CC Dually with the dual tanks. My rear tank is the 19 gal. I think.
I'd love to upgrade to a larger tank, and since the diesel does not use an in tank pump, I'm thinking that extending the length of the pickup tube and slight modification to the gauges float rod assembly would be all that's required to make it work.
Just wondering if anyone else had done it and if so, what had to be changed (besides the tank & lower straps).
I've done this on a couple of trucks. Both 38 gallon tanks I bought came with instructions and hardware to do the swap, so you won't need to buy anything else. I had to extend the float so it had full range of the tank, you'll probably have to play with the adjustment so the fuel gauge will read correctly, other than that it is a straight forward swap.
I think Rockauto has the best pricing on the tank.