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  Cadillac STS-V

  Article Image gallery (12) Specifications  
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Country of origin:United States
Introduced in:2005
Introduced at:2005 NAIAS
Source:Company press release
Last updated:February 09, 2005
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Click here to download printer friendly versionThe 2006 Cadillac STS-V is General Motors' most intense expression of Cadillac power and performance yet, and the luxury nameplate's latest offering in its growing family of high-performance V-Series vehicles. The STS-V carries all the craftsmanship and sophistication of its STS sibling, but does so at an entirely different level. Designed for everyday driving, the STS-V has been developed to deliver supercharged, rear-drive performance with an elegant design statement that is unmistakably Cadillac.

At the heart of the STS-V is a new, 4.4-liter version of the Northstar engine outfitted with a positive displacement intercooled Supercharger. The dual overhead cam (DOHC) V-8 engine delivers the highest horsepower rating of any production Cadillac engine to date. Called the Northstar V-8 SC (supercharged), the engine produces 440 horsepower at 6400 rpm and 583 Nm of torque at 3600 rpm (power and torque figures estimated) - and the engine's power is underscored by its ability to deliver 90 percent of its peak torque between 2200 and 6000 rpm. Vehicle redline is 6700 rpm. The Northstar V-8 SC generates 120 horsepower and 156 Nm of torque more than its Naturally Aspirated counterpart, while its specific output of 100-horsepower-per-liter makes it one of the world's highest specific output production V-8 engines.

However, the Northstar V-8 SC used in the STS-V is more than just power and torque. The DOHC engine includes variable valve timing that enables outstanding top-end performance while maintaining the expected refinement and quality associated with a luxury marque. The aggressive torque curve enabled by the choice of a supercharged engine gives the STS-V acceleration capable of placing it firmly in the under-5-second-club for 0-to-60 time. The refined shift feel is enabled by careful electronic calibration of both the engine and transmission. During shifts, power is instantaneously lowered, then ramped back up carefully to make gear changes virtually unnoticeable.

The Northstar V-8 SC is mated to the all-new Hydramatic 6L80 six-speed automatic transmission - the first use of GM's new six-speed automatic. The 6L80 - the only transmission offered on the STS-V - is one of the most technologically advanced automatic transmissions in the industry, using clutch-to-clutch operation and an advanced integrated 32-bit transmission controller to deliver smooth and precise shifts.

The 6L80 also incorporates a host of advanced driving enhancement features, including advanced Performance Algorithm Shifting (PAS) and Driver Shift Control (DSC). PAS lets the electronic transmission controller override the automatic gear selection during closed throttle high lateral acceleration maneuvers, rapidly downshifting with the release of the torque converter clutch for smooth powering up when the throttle is reopened. Driver Shift Control allows the driver to sequentially shift gears manually via the gearshift lever.

The STS-V has been tuned for performance on virtually every road condition and environment including GM's all-new Milford Road Course facility and the Nordschleiffe (North Course) at Nürburgring.

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  Article Image gallery (12) Specifications