In the 1980 Indianapolis 500, Smiley qualified Patrick Racing's Valvoline Phoenix/Cosworth in 20th position. His race ended when the turbocharger blew on lap 47, causing him to finish 25th. In the 1981 Indianapolis 500, Smiley qualified the Patrick Racing Intermedics Wildcat VIII/Cosworth, qualifying 8th and led 1 lap, but finishing 22nd after a crash on lap 141. His crash set up the controversial finish to the Indy 500 between teammate Mario Andretti and Bobby Unser.