4 Door Street Racing Car
The 6.2-liter supercharged V-8 retains the LT4 moniker and packs the Z06’s forged aluminum pistons, powder-metal forged connecting rods, titanium intake valves, and an Eaton blower pushing 1.7 liters of air per rotation. Aside from the intake and exhaust arrangements, the major difference between the Corvette and CTS-V engines is the lubrication system. In the Corvette, the low hood and the height of the supercharger dictate a dry sump and remote oil reservoir. The relatively tall Cadillac doesn’t have the same hood-height issues, so oil starvation is kept at bay in high-g corners by a deep sump, reducing complexity and weight.
Given the differences in their cooling systems and how the two cars breathe (plus the always-lurking horsepower hierarchy dictated by brand management), all of the Z06’s 650 horsepower and 650 pound-feet of torque won't materialize in the Cadillac. Instead, the CTS-V is rated at 640 horsepower and 630 pound-feet. We project a zero-to-60 blitz of 3.7 seconds en route to a 12.0-second quarter-mile ET. Those figures would essentially match the BMW M5’s, but lag behind those of the four-wheel-drive Mercedes-Benz E63 AMG and Audi RS7 by a quarter to half of a second.
The V’s top speed stands to be even more impressive. CTS chief engineer Tony Roma was coy at first, saying only that his team aims for “a big number, ” but he eventually let on that they’re hoping the car will exceed 200 mph. At our interview, the closest we got to a CTS-V in motion was firing the small-block V-8 engine. Its eight cylinders came to life with a rabid bark that ricocheted off the coved walls of our photo studio before the 6.2-liter settled into a gravelly idle, fast and loud. The sound is as awesome as it is assertive, though your neighbors may think otherwise when you leave the driveway at 6 a.m. For those occasions, you’ll want to start the car in tour mode, which keeps the muffler-bypass valves closed to quiet the snarl.Magnetorheological dampers are standard, as is an electronically controlled limited-slip differential borrowed from the a href="/reviews/2014-cadillac-cts-vsport-long-term-test-update-review" target="_self"CTS Vsport/a and modified with a heat exchanger connected to the transmission’s cooling circuit. /p p Iron brake discs mounted on aluminum hats measure 15.4 inches up front and 14.4 in the rear. They’re squeezed by six- and four-piston calipers, respectively, borrowed from the a href="/chevrolet/camaro-z-28" target="_self"Camaro Z/28’s/a carbon-ceramic brake package. The rear discs are so large, they’d be iverboten/i in the World Challenge series where the current CTS-V coupe competes. The brakes surely won’t shed heat quite like carbon discs, but the added surface area of the massive rotors means the front discs run 200 degrees Fahrenheit cooler while working than those of the outgoing car. /p table border="0" cellpadding="2" cellspacing="0"x">
Left: The Recaro seats are optional. Cadillac reckons that some CTS-V buyers will want less-restrictive, more-comfort-oriented chairs.
Michelin tailored the Pilot Super Sport tires—265/35-19 front and 295/30-19 rear—specifically for the car, and the tires come out of their own bespoke mold. Two different tread rubber compounds balance the contradictory goals of extending tire life and maximizing cornering grip.
The CTS-V is one car with one suspension. There are no upgrades, no optional big wheels, and no add-on carbon-ceramic brakes. The only chassis-related choice comes down to wheel finish. “These cars are meant to be the boutique offering, ” Roma explains. “We feel like good is good, so we’ve tuned the chassis and you get the good stuff. You don’t have to check the track-package box. This is the track package.”
Those who do venture onto road circuits will benefit from the CTS-V’s first use of the Performance Traction Management (PTM) system. First demonstrated on the 2010 Corvette ZR1 and now offered on all Corvettes, PTM’s five modes—from wet to race—progressively loosen the stability-control system’s oversight. Track rats also can record their exploits on the optional Performance Data Recorder, which overlays vehicle data on a video captured by a camera mounted ahead of the rearview mirror.
If the CTS Vsport is any indication, the full-blown V should deliver some of the purest steering feel out there—not just among the competition, but in all of luxuryland. For the Cadillac team, it’s a product of philosophy more than an engineering challenge. “If you look at the fundamental parts that a lot of our competitors have in their cars, you’ll find architectural components that you would put in a car to get what I call good steering feel, ” Roma says. “So when we go drive the resulting car, a lot of times we go, ‘Whoa, this is so isolated.’ Clearly a lot of our competitors favor ride and isolation because there is a trade-off to be made.”