Horsepower Limiter
The leagues however has a set horsepower limiter to each car:
- Dirt: Lowest: 240 Highest: 300
- Modified: Lowest: 271 Highest: 350
- Truck: Lowest: 520 Highest: 592
- Cup: Lowest: 576 Highest: 655
Read more about this topic: NASCAR: Dirt To Daytona