The ZIL-4104 was a limousine built by ZiL from the late 1970s to the early 1980s, when it served as the transport of the elite of the Soviet Union. It is estimated that no more than fifty cars were produced each year.
Originally designated ZIL-115,[1] the ZIL-4104 was an update of the ZIL-114 with which it shared the same chassis and over half its mechanical components.[2] Despite sharing the same chassis, the ZIL-4104 was as much as 314 kg heavier than the 114.
Mechanically, the ZIL-4104 also improved on the 114. The V8 pushrod engine of the 114 had its stroke increased from 95 to 105 mm. With a 108 mm bore, this meant the capacity increased from 6,959 to 7,695 cc,[3] which was throughout the model's lifespan one of the world's biggest passenger-car engines (Cadillac produced a 472 cid engine, enlarged to 500 cid). This engine developed 315 hp SAE Gross at 4,400 rpm and a substantial 608 Nm at 2500 rpm.[4]