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 Cup Series North Wilkesboro returns July 19, 2026 with new engines. Fans, drivers, and teams prepare for a historic ...

It was a little more than a year ago that Elton Sawyer put a wet blanket on NASCAR horsepower increases in the Cup Series. However, things have started to change. The main argument from the Senior ...

Each week after every Cup Series race, NASCAR.com — with assistance from our partners at Racing Insights — will bring you metrics that matter, going beyond the official race results with analytics and ...

I went to Sonoma for a NASCAR race and found out heat is the bad guy, fluids are the secret weapon, and Valvoline’s engineers are basically mad scientists with pit passes. By Heather Kuldell-Ware ...