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The Viper ACR-X utilizes the 600 horsepower ACR as a starting point and with the aid of headers and a low-restriction exhaust system pushes it to a pavement-pounding 640 horsepower. The suspension is upgraded and tuned solely for the track, optimizing its performance on the toughest road courses. Additional aerodynamic upgrades improve downforce, help stability and improve grip in high-speed corners. This car was not designed for Sunday cruisers. This is a purpose-built race car, created for serious racers only who demand serious speed and performance. The Viper ACR-X, similar to the Viper Competition Coupe, boasts safety features including a factory-designed roll cage, fuel cell, and race seat. Additional racing components have been included to meet the added durability and reliability requirements for competition. With its impressive performance and safety features, no other race car can match the value of the ACR-X – all at a price point very close to that of the street ACR while just a fraction of the cost of the track-only Viper Competition Coupe.
Specs:
GENERAL
Body Style - Coupe
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
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 (2510)
Track, Front - 61.6 (1565)
Track, Rear - 60.9 (1547)
Overall Length - 175.6 (4459)
Overall Width (at Sills) - 75.2 (1911)
Curb Weight - 3190 lbs.
Weight Distribution - 49/51
Aerodynamic Downforce (@150 mph) - 1100lbs.
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
Dive Planes - Front quad
Headlamps - High-Intensity Discharge (HID) low and high beams
Mirror - Dual outside
Splitter - Front carbon-fiber with rub strip
Windshield Wiper - Variable intermittent, two-speed with low-profile flat blades
Wing - Rear carbon-fiber with seven-position stanchions
Optional:
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
Extinguisher - Fire
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
ACCOMMODATIONS
Seating Capacity - 1
All dimensions are in inches (millimeters) unless otherwise noted. Information shown is correct at time of printing and is subject to change. This is not a street legal vehicle. |
