NASCAR made a host of technical rulebook updates on Friday, with some of the most notable changes regarding increased horsepower next season, as well as testing guidelines.To begin, five racetracks in 2026 will use the short-track/road-course aero package as Cup Series teams compete with an increase to 750 horsepower –...

NASCAR confirmed on Wednesday an increase in horsepower, from 670 to 750, at a total of 17 tracks for the 2026 season.