Thursday, July 28, 1977 – Janet Guthrie, the first woman to compete in the Indianapolis 500, announced that she will give up her USAC license to focus on competing in NASCAR’s premier series. Guthrie, 39, had made five NASCAR starts in 1976 with a best finish of 15th at Charlotte Motor Speedway and Daytona International Speedway while also competing in USAC events. She had eight NASCAR starts in ’77 at the time of the announcement, highlighted by an 11th-place run at Bristol Motor Speedway.
• Guthrie was competing for NASCAR Rookie of the Year honors in ’77, along with Ricky Rudd, Sam Sommers, Tighe Scott, Tommy Gale and Gary Myers. Rudd was eventually named ROY.
• NASCAR and USAC conflicting race dates meant Guthrie would have to choose between sanctioning bodies. When NASCAR was scheduled to run at Pocono (Pa.) Raceway, USAC teams would be running at Texas World Speedway; and when the stock car set pulled into Michigan International Speedway, open-wheel teams were slated to be racing in Milwaukee, Wis.
• Guthrie drove for team owner Lyndia Ferreri during the bulk of her brief NASCAR career. She never competed for a full season, running only partial schedules in ’76, ’77, ’78 and ’80. She is credited with 33 starts and five top-10 finishes.
• Guthrie made 12 open-wheel starts, including four in the Indianapolis 500. She finished a career-best ninth in the ’78 annual classic.