The QX56 enters the 2007 model year with minor enhancements, most notably a power increase of five horsepower (from 315 to 320) and three lb-ft of torque (from 390 to 393). A new color, Pacific Sapphire, is also offered.
The QX56, since the introduction for the 2004 model year, has become a benchmark in class, with standard luxury features such as front Active Head Restraints, RearView Monitor and Rear Proximity Sensor, power folding outside mirrors with heat, electrochromic auto-dimming, power adjust and integrated turn signal, Bluetooth® Hands-Free Phone System and mp3 playback capability.
The QX56 blends responsive acceleration with agile handling through use of its leading edge engine and chassis design. For 2007, the standard 5.6-liter DOHC V8 has been revised to produce 320 horsepower at 4,900 RPM and 393 lb-ft of torque at 3,600 RPM. Nearly 90 percent of the engine's impressive torque is available below 2,500 rpm – where it's needed for hauling, towing or slow-speed off-road driving.
To achieve this level of power, advanced design features have been employed, such as an aluminum block with cast iron cylinder liners, forged steel crankshaft, microfinished crankshaft and camshafts, molybdenum-coated pistons, 6-bolt main bearing caps, heavy duty cooling system, single-stage timing chain and, for precise control, an electronic "drive-by-wire" throttle
Source: Infiniti press