For months, maybe even years, fans, drivers, team owners, and industry members have been calling on NASCAR executives to add horsepower to the NASCAR Cup Series short track package, to improve the ...

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

From Street Stock to Winston Cup, the three most important areas for engine performance improvements are cylinder heads, valvetrains, and intake manifolds. In particular, cylinder heads affect most ...

American Ethanol gets the green flag every time a NASCAR engine starts, keeping the sport running on high-performance Sunoco Green E15 fuel since 2011. Now the brand is presenting a Monster Energy ...

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 ...