The Grand-Am regular, who has a handful of Nationwide and Truck Series starts to his name, will drive a second TRG entry alongside team regular David Gilliland. The 34-year-old currently drives for TRG's sportscar arm in Grand-Am's GT class.
He tested TRG's Cup specification Chevrolet prior to the Sears Point event, and is confident but realistic about his chances on his debut in NASCAR's premier championship.
"In qualifying, I just want to make the race and secure a spot in the field," said Lally. "In the race, I think a realistic goal is a top 20 finish."
Team boss Kevin Buckler was pleased to give Lally this opportunity.
"Andy has been an integral part of our sports car team for over four years now and has also been a good friend," Buckler said. "He is one of the best road racers there is and he knows Watkins Glen like his own backyard.
"We brought him into NASCAR in 2007 when we started our programmes, so I feel it is really cool to give him this shot in the Sprint Cup. I obviously have a lot of faith in his ability and judgement."
NASCAR: Mayfield failed test again
