The Lamborghini V12 refers to the flagship V12 engine used by Lamborghini. Lamborghini has had two generations of V12 engines through their history, both of which were developed in-house. The first-generation Lamborghini V12 was a sixty degree (60°) V12 petrol engine designed by Lamborghini, and was the first internal combustion engine ever produced by the firm. It entered production in 1963 as a 3.5 litre displacing fitted on Lamborghini's first car, the Lamborghini 350GT. The engine remained in use for almost fifty years; the final version of 6.5 litre displacement was installed in the Lamborghini Murciélago. Lamborghini discontinued their first-generation V12 after the Murcielago, opting for a brand-new V12 that first saw use on the Lamborghini Aventador. History When Ferruccio Lamborghini set out to compete with Ferrari, he contracted Giotto Bizzarrini to design the engine for his car and, according to some accounts, paid him a bonus for every horsepower over what Ferrari's V12 could produce. The finished V12, with minor improvements, went on to become the 6.5 litre powering the Lamborghini Murciélago LP 640, and completed its service for Lamborghini with the final version of the Murciélago, the Murciélago LP 670-4 SuperVeloce. Technical overview The engine was designed from the start to be a quad cam 60 degree V12 - as an intentional snub to Ferrari's single overhead camshaft per-bank design. When the prototype was tested in 1963, it was able to produce at 9,000 (rpm), or almost per litre. Bizzarrini insisted the engine was mechanically capable of reaching at 11,000 rpm with an uprated fuel system, but the design was judged adequate, and when fitted with production carburettors, all the auxiliary systems, and detuned for road use, the engine still made . Over the years, this V12 engine has nearly doubled in displacement - first to , and later to . It has seen the modification of the cylinder heads to allow four valves per cylinder, the replacement of Weber carburettors with electronic fuel injection, and the re-engineering of the lubrication system from a wet to a dry sump design. However, the engine that powers the Murciélago LP 640 can trace its lineage directly to the F1-inspired design of Bizzarrini and his team more than forty years ago. Audi ownership and V12 successor When Automobili Lamborghini was purchased in 1998 by the German Volkswagen Group subsidiary Audi AG, the V12 engine continued undergoing constant upgrades, growing its displacement