Roaring engines are standard fare at a stock car race. What’s the history behind the horsepower and what are the rules now? Read more here for the full story.

NASCAR Cup engines live in a strange space: they are tightly regulated, largely hand built, and expected to survive hours at full throttle while still making headline power. The rulebook caps ...

NASCAR has dropped a new qualifying rule for the upcoming 2026 Daytona 500 and it’s sparking a ton of debate […] ...

NASCAR has tweaked the Daytona 500 qualifying rules in 2026. Find out the minor change to Daytona 500 qualifying!

NASCAR hosted its annual rules briefing Thursday at its research and development center in Concord. Most of the rules changes weren’t all that revelatory. The big procedural adjustment to the NASCAR ...

The biggest message among NASCAR’s rules changes last week was this: Don’t egregiously dump another driver on purpose or the consequences could derail your season. NASCAR didn’t say that outright but ...

NASCAR has already implemented a series of substantial changes ahead of the 2026 season, touching nearly every aspect of the sport. Those adjustments include a reworked championship format, increased ...

At first glance, the format shift may not change the whole scene of how NASCAR races unfold. But Connor Zilisch’s crew chief, Randall Burnett of Trackhouse Racing, recently peeled back the curtain ...