The 1974 NASCAR Winston Cup Series was the 26th season of professional in the United States and the 3rd modern era NASCAR Cup series. The season began on Sunday January 20 and ended on Sunday November 24. The first 15 races were shortened 10 percent due to the 1973 oil crisis. Following criticism of the 1972 and 1973 points systems that placed emphasis on completed miles, NASCAR implemented a new points system, that took basic purse winnings, multiplied by number of starts, and divided by 1,000; it was designed to more directly reward winning races, a response to Benny Parsons' championship the previous year with just one win. Richard Petty was Winston Cup champion at the end of the season finishing 567.45 points ahead of Cale Yarborough, while David Pearson finished a strong third in points despite only nineteen starts. Earl Ross was named NASCAR Rookie of the Year.
Begun on January 20, the Western 500 at Riverside International Raceway was stopped by rain and resumed on January 26. Cale Yarborough led 144 laps but was closely contested by Bobby Allison, who led 33 laps. Allison faltered and finished a distant fifth, while Cale took the win with Richard Petty second. David Pearson finished third in the final eligible race for the Wood Brothers 1971 Mercury Cyclone; the car had won 19 times with Pearson and A.J. Foyt the previous two seasons.
Bobby Allison grabbed the win, his third with his own team since the start of 1973.
Cale Yarborough led most of the first half but his handling went away and Richard Petty dominated the second half en route to the win.