Dodge Viper ACR

[Denis]

http://www.autoblog.com/2015/05/08/2...-acr-official/

Originally Posted by Autoblog

Instead of blessing the ACR variant with bunches of extra output, Dodge instead turned to an aggressive aerodynamics package that it claims delivers nearly a ton of downforce at the Viper's maximum speed of 177 miles per hour. The total aero package includes an adjustable, twin-element, carbon-fiber rear wing, carbon-fiber diffuser, an extendable front splitter, and dive planes. Those big louvers on the hood? Yeah, they're removable, too.

The "race-tuned" suspension uses coil-over Bilstein shocks that offer ten different settings and up to three inches of height adjustment. Kumho Ecsta V720 tires were built specifically for the Viper ACR, and come in 355/30 in back and 295/25 in front, with 19-inch wheels at all four corners. Along with the aero improvements, Dodge is claiming the Viper can pull a race-car-like 1.5Gs in higher-speed turns. Carbon-ceramic brakes with six-piston calipers add the stopping power that's greater or equal to the ACR's cornering performance.

Dodge was also keen to reduce weight, taking some rather dramatic measures in the effort. The stereo has just three speakers, while the electric function was removed from the seats. Even the carpet has been replaced with a "lightweight" alternative.

[ilirg]

As much as I love the z06, I think it may have its hands full with this car on the track.

[KMPrenger]

The 3/4 rear view of the Viper has got to be one of the sexiest looking angles of any car out there. Love it.

[Denis]

Originally Posted by KMPrenger

The 3/4 rear view of the Viper has got to be one of the sexiest looking angles of any car out there. Love it.

I agree. it looks so good

[stoopid]

Dodge is claiming the Viper can pull a race-car-like 1.5Gs in higher-speed turns.

It should, it effectively IS a race car with all that shit added to it.

[45thAnniversary2SS]

Badass!

[Burt]

Originally Posted by ilirg

As much as I love the z06, I think it may have its hands full with this car on the track.

There's a guy in my local SCCA with a new Viper T/A, and he posted a video of himself on track with a C7 Z06, either at VIR or Mid-Ohio. (can't remember which now) The T/As are already a handful.

[Bizaro]

meh ill take a honda sti over this, M POWER BABY

[King T]

[King T]

[King T]

[King T]

[King T]

(Car And Driver)








2016 Dodge Viper ACR Has More Wing, More Adjustability than You Can Rattle a Snake At
Taking the fairness out of your next open track day.

Did you know that Porsche’s 911 GT3, from the factory, offers precisely zero adjustability for its aerodynamic addenda? Same goes for the new Ford Mustang Shelby GT350R. The Chevrolet Corvette Z06 is nearly as limited, although it offers buyers a package where the central portion of the rear spoiler can be manually raised or lowered to taste. Dodge thinks that’s just air-headed, and for its track-destroying Viper ACR revival, it has made fully 10 different aero components either adjustable or removable.

The Air Beware

Keeping in mind that the 2016 Viper ACR is, like its forebears, still street-legal, that level of fine-tuning is almost unheard of. And yet, if the measure of a true track animal takes adjustability into account, consider the ACR hands-downforce the wickedest beast extant. The ACR’s optional Extreme Aero package comes with a removable front splitter extension, an adjustable dual-element rear wing, four dive planes, six removable diffuser strakes, removable brake ducts, and hood louvers that can be popped out to decrease air pressure in the wheel wells.

Looking for all the world like the automotive equivalent of a woman’s skirt blowing up in the wind, the ACR’s huge rear wing is likewise a little bit inappropriate and yet holds a vice grip on our attention. Meanwhile, all of the louvers, slats, and spears poking into or out of the ACR’s body are like so many piercings and tattoos. Mothers will shield their children, the police may be called, and the air—oh, the air. It will be employed, Dodge says, to produce nearly one ton (2000 pounds!) of downforce at 177 mph with the aero package. That figure is more than three times greater than Dodge’s number for the Viper TA. That’s TA as in “Time Attack.”

Sticky, in a Good Way

Air isn’t the ACR’s only collateral damage—the ground isn’t going to enjoy seeing one of these Vipers coming, either. Massive 19-inch Kumho Ecsta V720 (street) tires measuring 295/25 up front and 355/30 in back work in concert with the aerodynamics to deliver “sustainable 1.5-g cornering,” according to Dodge. Remember that that figure doesn’t necessarily preview the Viper’s skidpad performance as we test it—our test uses a 300-foot-diameter circle, and its tightness likely will keep the car’s aero bits from contributing too much grip. Even so, we look forward to running an ACR around our skidpad to see if it can approach the epic Corvette Z06’s 1.19-g reading; we expect a figure well over 1.00 g.

Mechanically, the ACR benefits from carbon-ceramic Brembo brakes and adjustable Bilstein coil-overs. The brake rotors measure 15.4 inches up front and are squeezed by six-piston calipers, while the rears measure 14.2 inches and are clamped by four-piston calipers. The coil-overs have 10 settings for rebound and compression tuning and can allow up to three inches of ride-height adjustment so that racers can corner-weight the ACR (this is the practice of balancing the suspension to account for weight variability in the chassis such as fluctuating fuel levels, driver weight, etc.). The front springs were swapped for superstiff units rated at 600 pounds per inch, and the rears are rock-hard 1300-pounds-per-inch pieces—the springs are more than twice as stiff as those in the Viper TA.

The Same Heart Beats Within

Dodge didn’t alter the Viper’s 8.4-liter V-10 beyond reducing the exhaust’s backpressure slightly by using different exhaust tips; the V-10 routes 645 horsepower and 600 lb-ft of torque through the Viper’s robust Tremec TR6060 six-speed manual transmission to the rear axle. The interior is wrapped in faux suede and features an “ACR” badge on the dashboard, a unique steering wheel, and lightweight carpeting. The sound system has been reduced to three speakers, which is neat but not as focused as, say, the Chevrolet Camaro Z/28’s single speaker. C’mon, Dodge, cut down on the decadence! In fact, given how extreme the ACR appears on the outside, the interior is remarkably well-finished—Chrysler’s Uconnect infotainment system is present, as is carpeting in the trunk; we wouldn’t have been shocked or disappointed if the Viper had neither.

The last Viper ACR—sold between 2008 and 2010—offered a Hard Core package that saved about 40 pounds by ditching the radio, carpeting, and sound insulation, so maybe there’s room yet to remove still more sanity from the 2016 ACR. That previous ACR also birthed the non-street-legal ACR-X for 2010, which literally was a race car aimed at grassroots enthusiasts. Are these possibilities for this ACR? We say why not—after all, a little adjustability never hurt, right?

[King T]

Track-Ready Dodge Viper ACR Returns for 2016

DETROIT – Dodge is reviving the street-legal ACR track package for its fifth-generation Viper, with suspension upgrades good for up to 1.5-g of cornering force and an optional Extreme Aero Package that provides nearly 2,000 pounds of peak downforce.

“This is the fastest street-legal Viper we have ever built,” said Dodge and SRT president and CEO Tim Kuniskis, at the car’s introduction at the Viper’s Conner Avenue Assembly Plant. He’s talking about handling and balance more so than straight-line speed.

Dodge characterizes the Viper as “the ultimate track car,” while the 707-horsepower Charger Hellcat and Challenger Hellcat are “the ultimate musclecars,” Kuniskis said.

“We’re not putting an iron-block Hellcat with 200 [extra] pounds over the front wheels of the Viper,” Kuniskis said.

The 2016 Dodge Viper ACR, which begins production in the third quarter, gets a race-tuned suspension with 10-setting double-adjustable coil-over Bilstein shocks and a special racing alignment that provides up to three inches of suspension height adjustment. Kumho Ecsta V720 295-25/19 front/355-30/19 rear high-performance tires have been developed for the ACR. Dodge says they deliver lap times 1.5-seconds faster than race-only tires.

Brakes are Carbon Ceramic Matrix 15-inch two-piece rotors with six-piston Brembo front calipers.

The optional ACR Extreme Aero Package adds an adjustable, dual-element, carbon fiber, 73.9-inch rear wing (a 69.9-inch rear wing is standard), rear carbon-fiber diffuser, detachable front-splitter extender, additional dive planes and removable louvers to relieve front air pressure.

The Viper ACR comes with lightweight carpeting, minimal three-speaker audio and manual seats, and maintains the car’s 50/50 weight distribution. The 645-hp, hand-built aluminum-block 8.4-liter V-10, which makes 600 lb-ft. of torque, remains unchanged. Pricing has not been announced.

The interior features Alcantara, an ACR badge and accent stitching. However, customers may order the ACR with the Dodge Viper’s 1 of 1 customization program, including some of the cushier “luxury” features found in the Dodge Viper GTC. Dodge also showed off its first 1 of 1 customized Viper, a dark maroon metallic car with saddle leather interior and a dash plaque that indicates it has been built for “Sneaky Pete,” at the Conner Assembly Plant Friday. About one-third of the 32 Dodge Vipers currently in the build process here are 1 of 1 customization cars, a series that offers more than 8,000 paint choices, and other special order features.

The 1 of 1 program is designed to plan and normalize production runs at Conner, which has been beset by layoffs because of slow Dodge Viper sales in the past year or so.

“The value of this is not selling 30,000 or 40,000,” Kuniskis said of the Viper model. “Its big impact is on the brand and the brand position.”