Glidden returned for his third Winston title in 1978. He started the season in his Ford Pinto, winning at the season opening Winternationals and at the Cajun Nationals. The end of the season was in his Ford Fairmont, which took event wins at races including the Summernationals. Glidden finished the season undefeated in five national competitions. He had seven national victories that season, tying Don Prudhomme for the most that year. The seven wins broke the previous Pro Stock single season record of six wins set by Jenkins. He earned a record 16,035 points and lower the national e.t. record time to 8.59 seconds.