The 1970 Falstaff 400 was a Grand National (now Sprint Cup) - Grand National West (now Camping World West Series) combination event held at Riverside International Raceway on June 14, 1970. Richard Petty dominated the event, leading 149 of the 153 laps in route to a one-lap victory over Bobby Allison. Eventual Cup season champ Bobby Isaac finished 16th after rear end gear woes. Stats