Towards the end of the 1930s the decision was taken to replace the by now rather dated Ford designed side-valve engine. Again, the manufacturer turned to the US auto-industry, this time to Chrysler. The engine selected was the six cylinder unit fitted to the Dodge D5, which was considered relatively advanced at the time despite being a development of a unit that had originated back in 1928. The 3485cc unit produced 76 PS (56 kW; 75 hp) which was far more power than that produced by the Ford designed units that had powered the earlier M-1s. The necessary drawings were purchased in 1937-38, and after all the measurements had been converted to their metric values the necessary tooling was created and volume production of this engine, now designated as the GAZ-11 unit, began in 1940. The car with this engine was called GAZ-11-73: Passenger car version. Produced 1940-1941 and 1945-1946.