In 1980, Petty won two races early in the year at North Wilkesboro and Nashville but a violent crash at Pocono in July ended his championship hopes. He finished 4th in points. For 1981, NASCAR dictated that all teams had to show up with the new downsized cars of 110" wheel-base, that Detroit had been building since 1979. Though Petty had been successful with the Chevrolet and Oldsmobile cars he had been running, he wanted to get back to his Mopar roots. After taking a phone call from Lee Iacocca (who personally asked Petty to campaign a Dodge for 1981), the Petty team built a stunning 1981 Dodge Mirada and took it to Daytona in January 1981 for high speed tests. Petty's fans were also in a large part fans of his Dodges, so when word got out about the Mirada testing, 15,000 or so showed up on January 17, 1981, at Daytona Speedway to watch Petty put the Dodge through its paces. Sadly for the fans, the car could do no better than 186 miles per hour, about eight miles per hour slower than the GM and Ford cars. Petty gave up on returning to Dodge knowing that for the superspeedways the Mirada would not be competitive, and bought a Buick Regal for the Daytona race. In the 1981 Daytona 500, Petty used a "fuel only" for his last pit stop, with 25 laps to go, to outfox Bobby Allison and grab his seventh and final Daytona 500 win. This win marked a large change in Petty's racing team. Dale Inman, Petty's longtime crew chief, left the team after the Daytona victory (Inman would win an eighth championship as crew chief in 1984 with Terry Labonte).
In 1980, Petty won two races early in the year at North Wilkesboro and Nashville but a violent crash at Pocono in July ended his championship hopes. He finished 4th in points. For 19?81, NASCAR dictated that all teams had to show up with the new downsized cars of 110" wheel-base, that Detroit had been building since 1979. Though Petty had been successful with the Chevrolet and Oldsmobile cars he had been running, he wanted to get back to his Mopar roots. After taking a phone call from Lee Iacocca (who personally asked Petty to campaign a Dodge for 1981), the Petty team built a stunning 1981 Dodge Mirada and took it to Daytona in January 1981 for high speed tests. Petty's fans were also in a large part fans of his Dodges, so when word got out about the Mirada testing, 15,000 or so showed up on January 17, 1981, at Daytona Speedway to watch Petty put the Dodge through its paces. Sadly for the fans, the car could do no better than 186 miles per hour, about eight miles per hour slower than the GM and Ford cars. Petty gave up on returning to Dodge knowing that for the superspeedways the Mirada would not be competitive, and bought a Buick Regal for the Daytona race. In the 1981 Daytona 500, Petty used a "fuel only" for his last pit stop, with 25 laps to go, to outfox Bobby Allison and grab his seventh and final Daytona 500 win. This win marked a large change in Petty's racing team. Dale Inman, Petty's longtime crew chief, left the team after the Daytona victory (Inman would win an eighth championship as crew chief in 1984 with Terry Labonte).