A Viper so lethal, it can’t be street legal.
The new non-street legal Viper SRT10 ACR-X, is a raw and powerful machine based on the record breaking Viper ACR. The mighty 8.4-liter V-10 receives an increase of 40 horsepower over the production Viper through the use of factory headers, a less restrictive exhaust system, and an upgraded ECU, to create a heinous 640 horsepower.
Dodge’s Street and Racing Technology (SRT) team has also added a number of upgrades found in the famous Viper Competition Coupe to the ACR-X. Safety features such as a roll cage, fuel cell, race seat, and Momo steering wheel provide increased performance and protect the driver. The ACR-X is also more agile, benefiting from an upgraded suspension and a weight reduction of 160 lbs. Downforce has been increased to an astonishing 1,100 lbs. at 150 mph with the use of new aerodynamic components. A set of race slicks fitted to forged lightweight Sidewinder wheels, measuring 18 x 10 inches at the front and 19 x 13 inches at the rear.
While testing the Viper SRT10 ACR-X at Laguna Seca raceway, professional driver Kuno Wittmer was able to achieve lap times of just 1:31.00, more than three seconds faster than the Viper ACR – the fastest production car around Laguna Seca. “After a short warm up, I was running lap times as quick as exotic GT race cars. I was blown away by the power and acceleration, and even more surprised at how the ACR-X navigated the challenging Laguna Seca corners and how friendly it was to drive at the limit,” expressed Wittmer. “All aspects of the car work together perfectly to plant all that horsepower and torque without issue. This will be a great package for someone coming out of grassroots racing with a desire to step-up to GT level competition. Dodge nailed it with this one!”
Aimed at the racing enthusiast, the ACR-X designed for competition in the Viper Racing League, SCCA, and NASA events. The Viper SRT10 ACR-X will make its racing debut in July 2010 in the Dodge Viper Cup series. Sponsored by Dodge Motorsports and Mopar, more than $200,000 will be paid out to drivers during the series of ten races.
Production for the Dodge Viper SRT10 ACR-X is set for early spring of 2010, and will be priced at approximately $110,000.
Dodge Viper SRT10 ACR-X Gallery
Dodge Viper SRT10 ACR-X Specifications
GENERAL
Body Style: Coupe
Seating Capacity: 1
Assembly Plant: Conner Avenue, Detroit
ENGINE
Type and Description: 10-cylinder, 90 degree V-type, liquid cooled
Displacement: 8.4 liter (510 cid)
Bore x Stroke: 4.055 x 3.96 (103 x 100.6)
Valve System: OHV, Variable-Valve Timing (VVT), 20 valves, roller-type hydraulic lifters
Fuel Injection: Sequential, multi-port, electronic
Construction: Aluminum alloy block with cast-iron liners, aluminum-alloy heads
Compression Ratio: 10.2:1
Power (SAE net): 640 bhp (477 kW) @ 6,100 rpm (76 bhp/L)
Torque (SAE net): 585 lb.-ft. (793 N.m @ 5,100 rpm)
Max. Engine Speed: 6,250 rpm
Fuel Requirement: Unleaded premium – 91 Octane (R+M)/2
Oil Capacity (with Filters): 11 qt. (10.4L)
Coolant Capacity: 16 qt. (15L)
DRIVETRAIN
Description Synchronized in all gears, electronic reverse lockout mechanisms, new short-throw shifter
Gear Ratios:
1st – 2.66
2nd – 1.82
3rd – 1.30
4th – 1.0
5th – .80
6th – .50
Axle Ratio: 3.07
Final Drive Description: Frame-mounted hypoid bevel gear with GKN ViscoLok speed-sensing limited-slip differential
DIMENSIONS AND CAPACITIES
Wheelbase: 98.8 inches
Track, Front: 61.6 inches
Track, Rear: 60.9 inches
Overall Length: 175.6 inches
Overall Width (at Sills): 75.2 inches
Curb Weight: 3190 lbs.
Weight Distribution: 49/51
Drag Coefficient: .38
Aerodynamic Downforce (@ 150 mph): 1100 lbs.
INTERIOR
Defroster: Front Blower
Footrest: Driver’s, aluminum die-cast-style adjustable pedal pad
Instrument Cluster: 220-mph (355 kph) analog speedometer, trip odometer, 7,000 rpm tachometer, voltmeter, oil pressure, coolant temperature and fuel gauge
Mirror: Manual day/night rearview
Pedals: Power-adjustable
Seat: RaceTech racing driver side
Steering Column: Tilt
Steering Wheel: Suede-wrapped quick-disconnect racing style
EXTERIOR
Body Panels: Primed, ready to paint
Dive Planes: Front quad
Headlamps: High-intensity Discharge (HID) low and high beams
Mirror: Dual outside
Splitter: Front Carbon-fiber with rub strip
Windshield Wipers: Variable intermittent, two-speed with low-profile flat blades
Wing Rear: Carbon-fiber with seven-position stanchions
Optional: Custom Livery Design
Car Cover: Fitted
POWERTRAIN AND CHASSIS
Differential: GKN ViscoLok speed-sensing limited-slip. External race cooler package
Dyno Break-in and Performance Verification Electronic Seals: Engine, Transmission and Differential
Engine Electronic Control Unit: Upgraded performance program
Exhaust System: Dual-side
Flywheel: Lightweight
Headers: Exhaust
Oil Cooler: Engine
Pulley: Underdrive Crankshaft
SUSPENSION
Bar-Front and Rear Anti-Sway Adjustable Drop Links Type: Four-wheel independent with high-performance aluminum control arms and knuckles, KW suspensions with two-way adjustable competition coil-over shock absorbers with remote reservoir tubular stabilizer bars, shocks and springs.
STEERING
Type: Power-assisted rack-and-pinion
Overall Ratio: 16.7:1
Steering Turns (lock-to-lock): 2.4
BRAKES
Anti-Lock Brake System (ABS)
Front – Size and Type: 14.0 x 1.26 (355.0 x 32.0) vented disc, with Brembo 44/40 opposing piston calipers, curved fin vented StopTech two-piece slotted rotors
Rear – Size and Type: 14.0 x 1.26 (355.0 x 32.0) vented disc, with Brembo 42/38 opposing piston calipers, curved fin vented StopTech two-piece slotted rotors
Power-assist Type: Tandem Diaphragm vacuum with zero lost travel
WHEELS
Gloss black-painted wheels
Type and Material: Lightweight forged aluminum “sidewinder”
Size: 18.0 x 10.0 – front, 19.0 x 13.0 – rear
SAFETY
Adjustable Pedals
Anti-Lock Brake System (ABS): Four wheel
Battery: Dry Cell
Cage: Interior roll cage, 8-point
Energy-Absorbing Steering Column
Fire Extinguisher
Fuel Cell: Tip-over discriminator valve
Hooks: Front and rear tow
Padding: Interior roll cage impact protection, SFI rated
Knee-bolster Nets: Side window and center mounted
Remote Battery Switch: Emergency
ELECTRICAL SYSTEM
Alternator: 180 amp high speed
ADDITIONAL RESOURCES:
Dodge Viper SRT10 ACR-X Video
Wikipedia (SRT)
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