Product Summary

73-87 Chevy, EFI Conversion Fuel Tank Style, Aluminum

  • 1973 to 1987 Chevy C10 pickup EFI fuel tank is 20 gallon capacity and relocates the fuel tank from behind the seat to under the pickup box
  • Internal baffles and in-tank pump provision makes this EFI ready tank a perfect candidate for LS swaps or EFI conversions
  • Designed for use with in-tank submersible fuel pump module part number 91140233
  • Accepts common 5 bolt aftermarket sending units which are provided with most aftermarket gauge sets
  • Aluminum construction with fully TIG welded seams and exposed welds make for a truly custom look

Key Specs

Fuel Tank StyleEFI Conversion
Fuel System TypeEFI
Fuel Capacity Range20.00-24.99 Gallons
Capacity20 gallons
Material TypeAluminum

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Speedway Motors 91140246E Details

  • Relocates fuel tank from driver’s side frame rail to under pickup bed
  • Safer fuel tank location, as stock tank is vulnerable in a T-bone style collision
  • TIG welded .090-inch thick aluminum construction for strength with light weight
  • Features industry standard five-bolt fuel level sender mounting pattern
  • Rear mounting configuration provides better weight balance and enhances traction
  • Much safer fuel storage, as fuel is no longer right behind the driver and passengers
  • No fuel smell or sloshing sounds in the passenger compartment anymore
  • Tank features TIG welded in-tank fuel pump mounting ring for EFI fuel pump
  • Fits both two-wheel drive C10 and four-wheel drive K10 truck models
  • 20 gallon fuel capacity (factory tank is 16 or 20 gallon depending on year and bed length)
  • Not a universal fuel tank; dimensions, and mounting flanges specific to 73-87 Chevy truck frames

Make Your 1973-1987 Chevy Truck Safer by Relocating the Fuel Tank

By the time Chevrolet’s much loved C10 pickup truck hit the 1970s and into the ’80s a lot of safety updates had been made to the third generation C10 truck. Standard disc brakes, three-point seatbelts, radial tires, and more were the norm. That said, there is always room for improvement, and one such upgrade for these square body C10s is to relocate the driver’s side frame rail mounted fuel tank.

While previous generation C10s and even earlier model Chevy trucks featured a fuel tank in the passenger compartment behind the bench seat, the square body’s fuel tank location could certainly be seen as an improvement. However, it has been noted over the years that it’s mid-chassis placement on the outside of the driver’s side frame rail often means the factory tank can be ruptured during a traditional “T-bone” style collision. Moving the fuel tank to under the bed of the truck and behind the rear axle provides for a safer mounting location (rear impacts are often far less severe than a T-bone collision) between the rear frame rails.

Frame Specific Dimensions Ensures a Perfect Fit Under the Bed of Your Pickup

Moving the fuel tank to the rear of your pickup under the truck’s pickup box/bed floor provides several benefits. The most obvious of course is removing the liquid fuel storage from just under the driver’s side of the passenger compartment where a ruptured tank, separated fuel line or filler hose in an accident can quickly engulf the cab area with flames. Moving the fuel tank to the rear not only provides a higher level of safety but places a good bit of weight at the rear of the pickup, which aids in traction. On average you’re looking at roughly 100 pounds of weight with a full truck bed fuel tank. Relocating the fuel tank also provides room under the driver’s side cab area for running boards, rock sliders, custom exhaust, or to run your fuel and brake lines.

We have designed our under bed aluminum fuel tanks to mount between the frame rails for a perfect fit behind the rear axle assembly. This is not a universal fuel tank requiring modification to fit your truck. The 27-inch wide truck bed gas tank is built from .090-inch thick aluminum sheet and TIG welded for a strong, yet light assembly. An internal full height baffle reduces fuel slosh and keeps the pickup tube immersed in fuel. We provide generous 3-inch wide and 5-inch long mounting flanges made from 1/8-inch aluminum on each end (for a total width of 33 inches) of our aluminum fuel tank that fit within your truck’s frame rails. Final placement is directed via the factory rear frame rail angle and all you must do is drill your own mounting holes and bolt the tank in (hardware not supplied).

Available For Carbureted or EFI applications in Bare Tank or Full Kit Versions

As you improve your classic pickup with things like replacement gauges and even fuel injection, a truck bed gas tank such as our under bed aluminum fuel tank will certainly help with these upgrades as well. Using a standard 5-bolt fuel level sender mounting hole with 10-24 threads, you can install any compatible fuel level sender for your new instruments. Or, if you wish to keep the original fuel level gauge you can order our 5-bolt fuel sending unit and our fuel level interface module so that your stock gauge will work properly.

Our fuel injected truck bed fuel tank features a TIG welded mounting flange to accept our EFI fuel pump module. This makes supplying your EFI system with the proper fuel pressure and volume easy in your 73-87 Chevy truck project. The 1-1/2-inch diameter filler neck uses standard filler neck hose and allows you to install your choice of fuel filler cap/door in the floor of your truck’s bed. 

For those that prefer carburetion over EFI, we offer this fuel tank as a carbureted fuel tank as well. We also offer a complete carbureted fuel tank kit that includes fuel filler assembly, filler neck hose, sending unit, and more to complete your carbureted 73-87 Chevy truck project. So, whether you’re running a carb or the latest EFI system in your classic C10 Chevy truck, we have the Chevy truck gas tank retrofit for you to keep you safe and moving down the road.



Outside bracket to outside bracket is 33"

Fill spout is 1-7/16" tall x 1-1/2" OD

CARB Warning

For race/ off road use only

Emissions warning: this part only legal for sale or use in California for racing (competition) vehicles which may never be used, registered, or licensed for use upon a public highway. Any other use renders the vehicle tampered and not legal for use on California public highways (any public street or roadway, public dirt road, public park, or publicly maintained right of way open to the use of the public for vehicular travel). Violations subject to $37,500 penalty per violation per vehicle, revocation of registration, loss of use on California public right of ways, and proof of correction for tampering. There are similar restrictions and penalties under federal law and the laws of all other states with penalties under federal law of up to approximately $45,268 per tampered vehicle and/or engine.

Speedway Motors 91140246E Specifications

MFG. Part #91140246E
BrandSpeedway Motors
Fuel Tank StyleEFI Conversion
Fuel System TypeEFI
Fuel Capacity Range20.00-24.99 Gallons
Capacity20 gallons
Material TypeAluminum
Sending Unit IncludedNo
Fuel Pump IncludedNo
Tank Straps IncludedNo
Hardware IncludedNo
Overall Length27"
Overall Width17.5"
Overall Height9.5"
Material Thickness0.09"
Sold in QuantityEach
NotesOverall Height, Width, and Lengths listed are tank only dimensions