What is an ‘Altered’? The Wild World of Drag Racing’s Most Extreme Machines

When you hear the term “Altered” in drag racing, think of raw power, radical design, and a fearless approach to speed. These cars are not your average hot rods—they are purpose-built monsters engineered to dominate the quarter mile.

"An Altered race car is a purpose-built drag machine designed for extreme speed and performance. These cars feature bespoke tubular chassis and can exceed 230 mph, running either on injected nitrous with high-octane racing fuel or as supercharged methanol-fueled beasts. Cloaked in replica street car bodies—with styles ranging from the 1930s to modern designs—Altereds are engineered for one thing: raw acceleration. They can cover the quarter mile in around six seconds, delivering a spectacular show of power and precision".

Origins of the Altered Class

The Altered class emerged in the early days of drag racing as enthusiasts began modifying street cars beyond recognition. Initially, “altered” referred to cars with wheelbase changes, chopped bodies, and repositioned engines. Over time, the class evolved into a showcase for creativity and performance, spawning some of the most iconic and outrageous machines in racing history.

Design & Engineering

Modern Altereds are bespoke tubular chassis creations, built for strength and minimal weight. Wrapped in replica street car bodies—often inspired by classic designs from the 1930s through today—they maintain a nostalgic look while hiding cutting-edge technology underneath.

Powertrain Options

• Injected nitrous with high-octane racing fuel for explosive acceleration.

• Supercharged nitromethane or methanol-fueled engines delivering brutal torque and horsepower.

These combinations allow Altereds to achieve over 230 mph and produce thousands of horsepower.

Performance

Altereds are built for one thing: speed. They can cover the quarter mile in around six seconds, launching with such force that wheelstands and tire smoke are part of the spectacle. Watching an Altered leave the line is an experience—violent, loud, and unforgettable.

Styling & Personality

From Fiat Topolinos to Austin Bantams and even wild interpretations of ’50s classics, Altereds embrace flamboyant styling. Oversized rear tires, exaggerated blower intakes, and cartoonish stances make them crowd favorites at nostalgia and outlaw events.

Why Fans Love Altereds

• Unpredictability: Their short wheelbases and massive power make them notoriously tricky to handle.

• Visual Drama: Flames, smoke, and wheelies are all part of the show.

• Heritage: Altereds represent a rebellious spirit—a throwback to when racers pushed boundaries without compromise.

In Summary

An Altered is more than a race car—it’s a statement. It combines old-school aesthetics with modern engineering to deliver a spectacle of speed and style. Whether nitrous-fed, methanol or nitro-blown, these machines embody the essence of drag racing: go fast, look wild, and thrill the crowd.

Thanks for reading.