Yarborough continued to drive a limited schedule for the Wood Brothers in 1970, winning his second consecutive Michigan 400 and the American 500 for the first time along with one of the Daytona 125-mile qualifying races and four poles. At the end of the season, Yarborough was released after Ford withdrew factory support for NASCAR teams. He drove four races in 1971, posting one top-ten in Daytona in the No. 3 Ray Fox-owned Plymouth. He also ran in the Indianapolis 500, finishing 16th in a Gene White owned, Firestone sponsored Mongoose-Ford. The next season, Yarborough ran five NASCAR races, his best finish coming at Michigan driving for James Hylton. He ended the season with two consecutive top-tens driving for Hoss Ellington. He also ran his final Indianapolis 500 in a Bill Daniels sponsored Atlanta-Foyt, finishing 10th. Yarborough mostly focused on driving USAC races in 1971 and 1972. In 1973, Yarborough returned to NASCAR and ran every NASCAR Grand National race in a season for the first time in his career, driving the No. 11 Kar-Kare Chevrolet for Richard Howard. He won four races, including his second Southern 500, the National 500 and the Southeastern 500 at Bristol in which he led every lap, and had nineteen top-tens, finishing second in points.