Filler Neck Relocation Pumping Gas Before
The Problem

BEFORE Trying to pump gas into a filler neck that runs uphill to the fuel tank usually results in wet shoes and a few gallons of expensive gas on the ground. Tree Huggers are going to freak when they see this.

Smooth sheetmetal looks great and every truck could use a good shave job. One of the most often deleted items from a custom truck is the factory fuel filler location. It's common to shave the hole shut and then simply stuff the stock fuel filler neck into the inner fenderwell because it's a convenient spot. The problem with doing so, is that the odd angle of the filler neck usually ends up making it hard to actually fill up the gas tank. Our '73 Chevy C10 is a good example of this. Since losing both gas doors in the bedsides, we now pour more fuel onto the ground than we get into the tank during trips to the gas station.

Filler Neck Relocation Pumping Gas After
The Cure

AFTER Relocating the filler neck to a higher location, in this case it's the wheel tub inside of the bed, gives us a downhill facing neck to pour the fuel into. Gravity is now our friend when at the gas pump.

The solution is a pretty logical one, but it's not always easy to execute. We decided to move our filler necks so that they are positioned inside the bed, with an opening at the front of each wheel well. This required a small amount of re-plumbing and modification of each filler neck, as well as putting holes inside of the bed. Lucas Fab in Huntington Beach, California, made the swap happen with ease and showed us a few cool tricks to making the job look professional and functional.

  • Filler Neck Relocation Gas Tank
    Our C10's factory passenger-side gas door has been shaved already. The driver side already has an aftermarket saddle tank installed. Both filler necks have been relocated to the inside of the wheel wells, which meant that the filler necks were placed lower than the top of the fuel tanks. Needless to say, pumping gas uphill doesn't work so well.
    Filler Neck Relocation Gas Tank
    Our C10's factory passenger-side gas door has been shaved already. The driver side already
  • Filler Neck Relocation Front Side Wheeltub
    First off, we picked a good spot inside of the bed to move the fillers to. We chose the front side of each wheel tub because it's usually not in the way of cargo and it's out of sight.
    Filler Neck Relocation Front Side Wheeltub
    First off, we picked a good spot inside of the bed to move the fillers to. We chose the fr
  • Filler Neck Relocation Circle Hole Cut
    A 2 1/8-inch hole saw and cordless drill took care of making a nearly perfect circle in the factory sheetmetal. Then, a die grinder removed all of the burrs leftover from the hole saw.
    Filler Neck Relocation Circle Hole Cut
    A 2 1/8-inch hole saw and cordless drill took care of making a nearly perfect circle in th
  • Filler Neck Relocation Drilled Mounting Holes
    The stock fuel fills have a triangular bolt pattern already drilled into the face. We transferred the pattern to the wheel tub and then drilled 1/8-inch holes for mounting screws to feed through. A countersink drill bit then cleaned up the holes we just drilled so that the screws are easy to install into the filler necks.
    Filler Neck Relocation Drilled Mounting Holes
    The stock fuel fills have a triangular bolt pattern already drilled into the face. We tran
  • Filler Neck Relocation Reattach Hoses
    Now that the filler necks have found a new home, we've got to figure out how to reattach the hoses to them.
    Filler Neck Relocation Reattach Hoses
    Now that the filler necks have found a new home, we've got to figure out how to reattach t
  • Filler Neck Relocation Trick Vertical Bandsaw
    After some careful eyeballing on the part of Josh Lucas, he removed the filler necks and then cut off the lower portion using a trick vertical bandsaw.
    Filler Neck Relocation Trick Vertical Bandsaw
    After some careful eyeballing on the part of Josh Lucas, he removed the filler necks and t