EFI conversion? Oh yeah. LS or Coyote swap? Even better. Like most things in life that seem too good to be true, two of the most appealing engine mods in the book require upgrading to a high-pressure fuel system. While injecting fuel particles with electronic precision brings the promise of enhanced driveability, idle quality, mpg, and cold-start performance, it also brings the curse of dropping the gas tank, running new lines, and installing a high-pressure pump and regulator. After all that hassle, fuel slosh and pump starvation are always a concern. Suddenly, carburetor backfires and fouled-up spark plugs don’t seem so bad anymore. Someone stop the madness!
Ask and ye shall receive. Thanks to Edelbrock’s ingenious Universal EFI Sump Fuel System Kit, the madness has officially ended. What looks like an ordinary auxiliary fuel cell actually houses a high-pressure fuel pump, regulator, and inlet and outlet fittings all in one self-contained unit. With Edelbrock’s nifty fuel sump cell mounted under the hood, converting a low-pressure carbureted fuel system to a high-pressure EFI system is as easy as connecting the existing feed line to the cell inlet, then routing a new high-pressure line to the fuel rail. That’s it. No need to run a return line, baffle the fuel tank, weld on a sump, or worry about sucking the pump dry whenever the fuel level runs low. That’s not too shabby at all for under $400.
Turning a Low into a High
Here’s how it works. Edelbrock’s Universal EFI Sump taps into the low-psi fuel system on any carbureted engine, then boosts line pressure to the 43-plus psi that today’s EFI systems require. This arrangement allows a car’s low-pressure fuel system to remain completely intact. Once the Edelbrock fuel system has been installed, the existing feed line is simply re-routed from the carburetor inlet to the Edelbrock Fuel Sump inlet. Consequently, the only purpose of the low-pressure fuel system is to keep the Edelbrock Fuel Sump topped off. High-pressure fuel then exits out of the Edelbrock Fuel Sump outlet, and into a new feed line that attaches to the fuel rails. Sometimes the simplest solutions are best.
The potential applications for Edelbrock’s Universal EFI Sump Fuel System extend far beyond the company’s own EFI systems. No stock or aftermarket EFI system on Earth can tell what brand of pump is supplying fuel to its rails. As such, the Edelbrock system is truly a universal setup. “If you want to use our fuel system with an Edelbrock EFI system, that’s great. If you want to use our fuel system with another manufacturer’s EFI system, that’s OK, too,” Eric Blakely of Edelbrock candidly explains. “Our Universal EFI Sump Kit is also compatible with any factory EFI system. This makes it perfect for swapping a late-model Chrysler Hemi, Ford mod motor, or GM LS small-block into any musclecar or street rod.”
Since stuffing a big, bulky fuel cell under the hood can be challenging, Edelbrock designed its L- shaped sump to be as compact as possible. Measuring 9 inches tall, 10 inches wide and 3.75 inches deep, the cell is easy to fit in even the tightest of spaces. Like a welterweight prizefighter, the Edelbrock Universal EFI Sump Fuel Kit packs a big punch despite its compact size. Equipped with a high-flow 67 gallon-per-hour (255 lph) fuel pump, the system can support up to 600 horsepower. Any way you slice it, by piggybacking a high-pressure fuel cell/pump combination onto a low-pressure carbureted fuel system, Edelbrock’s all-in-one solution makes upgrading to an EFI fuel system ridiculously easy and affordable.