1971 Countach LP 500. This is the first prototype which was on display at the 1971 Geneva Motor Show. 1973 The first generation Countach LP 400. 4-litre engine six Weber 45 DCOE twin-body carburettors 375 hp 186 mph top speed 152 units produced up to 1977 1978 Countach LP400 S. Wheel arch extensions Lower front … Continue reading 17 YEARS AND 5 GENERATIONS OF THE LAMBORGHINI COUNTACH. Car news.