Sprint Car Dirt Track Coloring Page: Free PDF Sheet

Sprint Car Dirt Track: History & Fun Facts

From Fairground Ovals to Sprint Cars

Open-wheel dirt track racing goes back to the 1920s and 1930s, when drivers stripped down early roadsters and raced them on the dirt ovals built for county fairs and horse tracks across the American Midwest. Those early cars were light, simple, and had no wings or aerodynamic aids at all, relying purely on raw horsepower and a driver's skill to hold a slide through loose dirt corners.

The Wing That Changed Dirt Racing

The single biggest change in sprint car history arrived in the early 1970s, when racers and mechanics began bolting large flat wings on top of the roll cage, directly above the cockpit. That top wing pushes down on the car as air rushes over it, pressing the tires into the dirt for extra grip through the turns without slowing the car down on the straights the way a parachute or spoiler might. It remains the single most recognizable feature separating a sprint car from every other open-wheel race car.

World of Outlaws and the Winged Era

The winged sprint car became a full national spectacle when the World of Outlaws series launched in 1978, touring winged sprint cars to dirt tracks across the country and turning weekly local racing into a major touring championship. That series still runs today, and its cars keep the same short, stubby proportions and oversized top wing that trace back to those early 1970s experiments.

An Extreme Power-to-Weight Ratio

Modern 410 sprint cars run methanol-fueled V8 engines producing well over 800 horsepower in a car that, with the driver aboard, weighs only around 1,400 to 1,500 pounds. That power-to-weight ratio is among the highest in all of motorsport, higher than an Indy car or a Formula 1 car pound for pound, which is part of why sprint cars accelerate so violently out of every corner.

Sliding Sideways Through Dirt Turns

Unlike a paved oval, where a driver tries to keep the car gripped in a smooth arc, dirt track racing rewards drivers who point the nose sideways and slide the whole car through the corner, a technique fans call throwing it sideways. The big top wing and a short wheelbase of roughly 82 to 88 inches, far shorter than a long, stable Indy car chassis built for 200-mile-per-hour pavement speeds, are exactly what let a sprint car rotate that hard while staying planted on loose dirt.

The Wire Mesh Nose and Rock Guard

The wire mesh screen across a sprint car's nose is called a rock guard, and it exists for a very practical reason: dirt tracks kick up chunks of clay and gravel that could otherwise strike the radiator or the driver's legs at racing speed. That same mesh pattern appears on the sides of many sprint cars to protect the exposed engine and exhaust as cars race just inches apart. Local dirt tracks across the country run weekly sprint car programs in classes like 305, 360, and 410, named for engine displacement, giving young drivers a ladder to climb toward touring series such as the World of Outlaws.