Depailler also retired when his engine blew up .
The Ferraris raced away , and Hunt dropped to sixth , behind Jacques Laffite 's Ligier and the two six - wheeled Tyrrells , before eventually retiring with a transmission failure .
Depailler also retired when Hunt 's engine blew up .
The Ferraris raced away , and Hunt dropped to sixth , behind Jacques Laffite 's Ligier and the two six - wheeled Tyrrells , before eventually retiring with a transmission failure .