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Fuel System

Boost in a Box

While at LS Fest, we noticed several drivers spending a lot of time tuning their rides before hitting the track, dialing them in to try and gain an edge over the competition. This left us puzzled. If you’re looking for an edge, there’s no better way to optimize your performance with E85 than with a flex fuel system from Advanced Fuel Dynamics.

HOLLEY CARB TUNING

Holley carburetors have long been a staple in the go-fast world of high-performance motoring, whether it’s NASCAR, drag racing or on the street. Much like other performance-oriented products—perhaps even more so with a carburetor—a carburetor requires a fundamental setup and a degree of maintenance, and that’s considering you have chosen the correct-size carburetor for your application, at least to get it in the ballpark. Knowing how to adjust, maintain and even repair your Holley carburetor goes a long way toward helping to ensure that your carburetor will make optimum horsepower for a long time. Because of this, we decided to compile a few troubleshooting and repair tips for the popular 4150-series Holley carburetor, which is the series designation for Holley’s street/strip and racing carburetors.

MAKING GAS

Alternative-fuel sources and hybrid cars are all the rage today. Everyone from major automakers to backyard inventors is pursuing alternative fuels and energy sources. While the ultimate goal is generally to eliminate dependence on foreign oil, for hot rodders there is also the desire to invent and create a better-performing engine.

THE HYDROGEN HIGHBOY

Enter Carl Casper, a man best known for building custom cars and promoting his huge custom car show every year in Louisville, Kentucky. Casper has long been a self-thinker and innovator with plenty of experience under his belt, and he was intrigued with the concept of alternative fuels, hydrogen in particular. During our conversation with Casper, he summed it when he said, “I feel many of the solutions will come out of the car guys. I want the mechanical wizards who have taken street rodding and auto racing to the highest levels imaginable to start putting their creativity into alternative-energy systems. I’m putting my money on them. Everyone seems to be waiting for the big corporations to pull us out of this energy crisis, and they tend to forget that from the very beginning of time it’s often the little guy with a shop behind his house who creates the next great idea or invention of our time.”

150 TUNER TIPS

Have you ever looked at another enthusiast’s ride and noticed something unique, yet very clever, that made the vehicle stand out or perform better and thought, “Why didn’t I think of that?” Well, we’ve done some of the homework, legwork and research to provide you with a similar advantage. We scoured the tuning shops and interrogated the pros to find out what tips they have done that our readers could apply to their own vehicles.

SQUIRT GUN

You have to admit that the thought of injecting water into your engine sounds crazy. We all know that water doesn’t burn and it can’t be compressed. Those unfortunate souls who have tried to do this now have engines that are the equivalent of ship anchors. In this installation, we aren’t going to be injecting huge amounts of water into an engine, but rather a fine mist that’s proportionate to the fuel flow (10 percent to 20 percent), using a high-pressure pump. This will help lower the chances of detonation by reducing the intake charge temperature.

FUEL SYSTEM FUNDAMENTALS

After working long shifts and weekends, it’s payday and the time has come to enjoy your hard-earned cash. You stroll into the tuner shop and lay down some money on that turbocharger you have been dreaming about buying. Gotcha! Now your system is complete.

Action Packed

While the factory cast-iron four-barrel Q-Jet intake manifolds have performed admirably on literally thousands of GM applications—and if you are picking your engine from a used lot to use in a swap, it will likely be so equipped—every last one of them should be torn off the car and thrown in the dumpster.

Square Peg In A Round Hole

When the engineers at Chevrolet designed the fuel inlet and fuel cap for the early Nova, they must not have looked at the rest of the car. Novas aren’t called shoeboxes for no reason; with the exception of the wheels–and that gas cap–they are basically square. Wheels have to be round, but the gas cap, well….

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