Lampredi began his career as a design engineer in the construction of Piaggio Vespa scooters. Before the Second World War he worked for Isotta Fraschini, and was later responsible for the aircraft design in Reggiane.
After the war he became known as a designer of 12 - cylinder engines for the Scuderia Ferrari far beyond the borders of his native Italy addition. Lampredi had in 1946 built an engine for Ferrari. This 4.5-liter V12 engine came in the Ferrari 257S from 1950 are used. Lampredi came back in 1947 for one year at Isotta Fraschini - and in 1948, he began to realize his concept of motors without charge at Ferrari.
The new engines had incorporated a significant part in the initial success of Ferrari in Formula 1 First, the engines were in the 275F1 and the 340F1 before José Froilán González the Ferrari 375F1 with Lampredi V12 engine at the Grand Prix of Great Britain 1951 in Silverstone first win for Ferrari at a world Championship race celebrated.
As in 1952 changed the rules for the race of the largest Monopostoklasse, Aurelio Lampredi constructed a new engine. For now discharged by the technical regulations of Formula 2 race in the drivers' world championship, he developed a 4- cylinder engine with two liters. The engine came in the new Ferrari 500 for use with the Alberto Ascari the World Championships in 1952 and 1953 won.
Lampredis work for Ferrari ended in 1955 after the takeover of the racing department of Lancia. With Lancia came Vittorio Jano to Ferrari and its V6 and V8 engines in the Ferrari race car. However, the Lampredi -12- cylinder engines lived on and came many years in the road car to use. Lampredi even moved to Fiat and was there until 1977 developers in the engine department. From 1973 to 1982 he was also director of sport at the Fiat Abarth daughter.
Lampredi was responsible for the Fiat Twin-Cam and SOHC engines, which he developed steadily. The so-called Lampredi engine was first built as a 8V engine and later as a 2-liter 16V engine, until the late 1990s. 1982 reached this engine type than 16V turbo version in the race car Lancia LC 450 hp from 1.4 liters of displacement. The most powerful production cars with Fiat twin cam engine were the Lancia S4 (1985) and the Lancia Hyena (1992 ) with 250 hp.