The Murciélago SV's 6.5L (6,496 cc) V12 engine, sourced from the Murciélago LP640, now produces 661 hp (493 kW) and 487 ft·lb (660 N·m) of torque. The SV's weight has largely been reduced from the LP640, thanks to the use of carbon fiber, removing 220 lb (100 kg) from the original model.
The Murciélago LP 670-4 SV may be a mouthful, but consider it shorthand for one of the fastest Raging Bulls ever to roar out of Lamborghini’s Sant’Agata plant. Fitting, because the “SV” tag stands for SuperVeloce—Italian for “superfast,” and Lamborghini only uses the SV name for the most highly-tuned final edition of a model going out of production. The SV modifications for the Murciélago certainly fit the bill, managing 661 horsepower (the “670” in the name is the metric horsepower rating) from the latest generation of the 40 year-old Lamborghini V12. Of course, nearly every part of the engine has been updated and optimized over its lifespan, which should be apparent as it warbles by at full throttle. In addition, the SV was put on a diet of carbon-fiber, trimming 220 pounds, and adding spoilers and side scoops crafted from bare carbon-fiber. The Murciélago was already a stunner, and the LP 670-4 SV is a fitting send-off to one of the most ferocious supercars to ever wear the bull of Sant’Agata.
The Lamborghini Murciélago LP 670-4 SV, being a high-performance variant of the Murciélago LP640, features improved performance over its base model. Owing to having an AWD drivetrain, the Murciélago SV is capable of decently quick acceleration, with 0-60 occurring in 3.2 seconds and 0-100 occurring in 7.2 seconds. Top speed is also impressive for a Murciélago, hitting up to 219 mph (353 km/h). Equipped with a large rear wing, the Murciélago SV generates a lot more downforce than its base model, allowing for quicker cornering, although the car is still relatively heavy at 3850 lb (1746 kg). The Murciélago SV's launch rating is also only slightly better than similarly-ranked RWD cars due to its weight.
The Lamborghini Murciélago LP 670-4 SV can be modified to have the Liberty Walk body kit. This body kit was originally intended for the Lamborghini Murciélago LP640, which is no longer in the Forza games.
The Lamborghini Murciélago LP 670-4 SV's 6.5L V12 was available as an Engine Swap option for certain Lamborghini cars in Forza Motorsport 4.
Since Forza Horizon, this V12 engine has been replaced by the Aventador's 6.5L V12.
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