I will start at the beginning. I am in the middle of putting a flatbed on my 2000 F150 SCAB. I have gotten to the point where I need to decide what to do with the Fuel Filler Neck. (Probably should have thought of it before putting the bed on....). Anyway, it has occured to me that if I use a 1 1/2" marine neck, at a 45 degree angle, I could mount it flush. Which brings me to my question. Doing this would eliminate what I believe to be the breather hose on the existing filler neck. How important is this? If I close off the port on the tank (cap it) and just run a fuel filler neck, will it create any serious issues? Thanks in advance. Here is a pic of current build.

 

Why do you want a flat bed?

 

I used to have one on an old work truck back in high school (Farm rig) and I loved the extra room and ease of loading. This truck is mostly an off road/beater truck, so it seamed like the next step. Plus, the old bed was no good (see pic below). It basically came down to: 1)needed new bed; 2)like flatbeds; 3) just cuz. I am aware that they are ugly as sin, but I kinda pride myself in how hideous my truck has become.





Had to cut access panels to the rear bolts, so much rust. The entire rear cross brace (or whatever) was rusted off.





Some decent rust on the frame.

 

If your emission tested/inspected, it may fail you for altering the fuel system.
Also when filling, you may get the pump shutting off all the time due to the tank not being vented if the gas backs up in the fill line.

 

Luckily, I am plated out of Oregon (mil) so I don't have to worry about inspections. The pump issue was actually something that occured to me. The new (temporary) line would only be about 6 inches from the tank, and not have anything restricting the interior like on a stock setup, so it should, hopefully, maybe, possibly, not be an issue. . Thanks for the advice.

 

I would make it flush, and use a new cap to lock it. It would definitely need a breather hose, but that wouldn't be hard to implement if you bought a pre-made breather hose.

 

You need a breather hose as it what keeps the tank from creating vacuum going into cativiation.

 

Who cares.

I think it rocks!

 

I went through this exact problem last fall. So yes you do need a filler neck and while you're at it, you need a smooth entry line (no restrictions on the gas going into your tank) or the pump will keep kicking off on you. And the breather tube is also really important. Also, make sure you mount the neck on a 45 degree angle. If you put it so the hole is straight up and down, gas will leak back out when you're filling it up. And when the nozzle shuts off, it'll shoot gas back out at you. I still haven't found a perfect solution, but can send you pictures of mine currently.

Also fender wells are important. Unless your bed is up high, which it doesn't look like it is. Any big load and you'll be pushing your tires into your flatbed.

Here is mine right before it was finished.

 

Thanks for the help. Got it figured out with your advice. The tires should be fine, I only have 1" more travel then space, so anything short of about a ton should be good. Next question for you though. Do you remember how the wiring was for your lights? If you don't remember, no biggie, I have a sensor to test.