A 410 sprint car's minimum weight, including the driver, is typically 1,400 pounds (635 kg). This is the standard set by most major sanctioning bodies like the World of Outlaws. The weight is a critical performance factor, balancing power from the massive 410-cubic-inch engine with the need for agile handling on dirt tracks.
The weight isn't just a single number; it's a carefully managed distribution. The heaviest component is the engine, followed by the driver and the rear-end assembly. Teams use ballast to strategically place weight to optimize traction and balance, especially when track conditions change. The chassis itself is incredibly light, often made from chromoly steel tubing to be both strong and as light as possible.
Here’s a breakdown of where the weight typically comes from in a 410 sprint car:
| Component | Approximate Weight Range | Notes |
|---|
| Engine (410ci V8) | 300 - 350 lbs (136 - 159 kg) | The heart of the car, a pure-bred racing engine. |
| Driver & Safety Gear | 180 - 220 lbs (82 - 100 kg) | Includes the driver's weight, helmet, firesuit, and HANS device. |
| Chassis & Roll Cage | 350 - 400 lbs (159 - 181 kg) | Chromoly steel tubing framework for safety and structure. |
| Rear End & Drivetrain | 200 - 250 lbs (91 - 113 kg) | Includes the quick-change rear end, axle, and brakes. |
| Wheels & Tires | 200 - 240 lbs (91 - 109 kg) | Four large, heavy-duty racing tires and wheels. |
| Fuel (Methanol) | 90 - 110 lbs (41 - 50 kg) | Fuel weighs about 6.6 lbs per gallon; a full tank adds significant weight. |
| Body Panels | 50 - 70 lbs (23 - 32 kg) | Lightweight aluminum or carbon fiber panels. |
| Ballast | Variable | Used to meet the minimum weight and fine-tune balance. |
Hitting the 1,400-pound minimum is non-negotiable. Cars are weighed after races, and being under weight leads to immediate disqualification. This rule ensures a level playing field and emphasizes chassis setup and driving skill over simply having a lighter car.
