Lamborghini Countach 5000 Quattrovalvole

The Lamborghini Countach was a mid-engined supercar that was produced from 1974 to 1990. Its design both pioneered and popularized the wedge-shaped, sharply angled look popular in many high performance sports cars. The "cabin-forward" design concept, which pushes the passenger compartment forward in order to accommodate a larger engine, was also popularized by the Countach.

In 1985 the engine was improved again, bored and stroked to 5.2 liters (5,167 cc) and given four valves per cylinder (quattrovalvole in Italian). The carburetors were moved from the sides to the top of the engine for better breathing — unfortunately this created a hump on the engine deck, reducing the already poor rear visibility to almost nothing. Some body panels were also replaced by Kevlar. In later versions of the engine, the carburetors were replaced with fuel-injection.

For the first time, a U.S. specification model was produced by the factory, with styling changes to allow bumpers to meet U.S. federal standards (large, bulky bumpers were used that, to many people, ruined the smooth lines of the car). Although this change was the most notable on the exterior, the most prominent change under the hood was the use of Bosch K-Jetronic fuel injection providing 420 PS, rather than the six Weber carburetors providing 455bhp. The 1985 U.S. model had a base price close to $100,000. Only two optional extras were available: a $5,500 aerodynamic spoiler and a $7,500 sound system.

Source: Wikipedia, 2011

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