NASCAR has elevated Mike Helton from president to vice chairman, and added chief operating officer Brent Dewar to its board of directors.

Helton had been president of NASCAR since 2000.

The moves announced Monday mean Helton will be the senior NASCAR official at all national series racing events overseeing competition. He'll also work closely with chairman Brian France on long-term strategic planning, and will represent NASCAR in various roles to help grow the sport.

NASCAR said Helton will remain a member of the board.

Dewar, who joined NASCAR as COO in 2013, will assume additional responsibilities in racing development, innovation and he will also work with NASCAR partners.