Description Available in: At NHRA Lucas Oil Drag Racing Series races and select NHRA POWERade Drag Racing Series events, Super Street racers compete on a fixed 10.90-second index. All vehicles must be full-bodied cars and weigh no less than 2,800 pounds except for six-cylinder cars, which may have a minimum weight of 2,000 pounds, and four-cylinder- and rotary-powered cars (1,200 pounds). Engine and chassis modifications are virtually unlimited. Racers compete on a five-tenths Pro Tree.