![]() ![]() The manufacturer’s management and leading engineers though, wanted to preserve the tradition of using naturally-aspirated engines, so the idea of turbocharging the Countach was never put into practice by the factory. The Countach that initially used this engine and became the most powerful production version of them all was called LP5000 Quattrovalvole (four-valve), but the 5.2-liter was also carried over to the visually-enhanced 25th Anniversary Edition launched in 1988.īefore Lamborghini introduced the four-valve version of the iconic twelve-cylinder, which improved overall output, the brand’s most influential clients and some engineers began campaigning for forced induction.ĭuring the first part of the 1980s, turbocharging became the norm in motorsport, so it was seen as the perfect solution for ample power gains without having to extensively modify the engine’s architecture. Enlarged again, this time to 5.2 liters, it had a new cylinder head with four valves per cylinder, used six Webber carbs (in the Euro-spec cars), and could now make 449 horses (455 ps). ![]() This finally changed in 1985 when the naturally-aspirated engine received another revamp. ![]() Something along the lines of the bespoke 440-hp, 5.0-liter at the heart of the LP500 prototype first shown at the Geneva Motor Show in 1971.Īfter its official debut, engineers continued to develop the Countach, launching a couple of improved versions (LP400 S and LP500 S) during the following decade, but, even if the engine displacement and torque output rose, neither version came with an increase in horsepower. Although the 3.9-liter made the P400 SV the fastest, most powerful iteration of Lamborghini’s first mid-engine supercar, enthusiasts expected more from the newer (and heavier) model. ![]()
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