Powertrain

As we reported previously, C7 base models will be powered by the new LT1 pushrod engine, which boasts an output rating of 450 horsepower (estimated) while exceeding the 26-mpg rating of the existing LS3 Vette. Thanks in part to the LT1’s broad torque curve, the Stingray is said to deliver a 0-60 time of less than 4 seconds. Advanced features such as direct injection, Active Fuel Management (cylinder deactivation), refined piston topography, and continuously variable valve timing are key contributors to the all-aluminum engine’s impressive power and efficiency.

As installed in the Corvette, the LT1 may be mated to one of two rear-mounted transaxles, including an all-new Tremec TR6070 seven-speed manual with Active Rev Matching and a dual-disc clutch. According to Corvette Chief Engineer Tadge Juechter, the system “anticipates the next gear selection and electronically ‘blips’ the throttle to match engine speed for a seamless gear change.”

The 6L80E six-speed, paddle-shifted automatic, meanwhile, soldiers on with revised tuning and a lower-inertia torque converter.

07 | Also new in the drivetrain department is the Tremec TR6070 seven-speed manual transmission, which features a rev-matching system for up- and downshifts. As on the C5 and C6, the transaxle is mounted in the rear of the car. 08 | Chevy says the Stingray’s aluminum frame is both stiffer and lighter than the C6’s hydroformed-steel chassis. New hollow front and rear cradles also cut weight while bolstering structural integrity.

Advanced Performance Hardware

Abetting the Stingray’s advanced powertrain are several new or improved performance systems, most notably an electronic limited-slip differential (eLSD) for Z51 Performance Package–equipped models. Electric power steering and a refined version of the Corvette’s highly regarded Magnetic Ride Control system further improve both agility and road feel.

“An important goal for the seventh-generation Corvette was to create a more intimate and connected driving experience,” said Chassis Vehicle System Engineer Mike Bailey. “Whether on the open road or on the track, we wanted drivers to feel comfortable and confident behind the wheel.”

Interestingly, while the C7 is longer and has a wider track than its predecessor (by around 1 inch in each measure), the car rides on slightly narrower wheels and tires. The base model uses 18x18.5-inch front and 19x10-inch rear rims, while Z51 variants get a 19x8.5-/20x10-inch combo. Both cars employ Michelin Pilot Super Sport run-flat tires developed specifically for the seventh-gen Vette.

Benefits of the narrower wheel/tires package include reduced steering effort and road noise, along with a nimbler feel and more-responsive steering. Despite its reduced footprint, the Stingray is expected to achieve 1g on the skidpad.

Standard Brembo brakes feature fixed, four-piston calipers pinching 12.6-inch front and 13.3-inch rear rotors on the base Stingray. Z51 ’rays, meanwhile, receive slotted rotors in a 13.6-/13.3-inch size combination. Stopping distances—already a Corvette strong point—are said to be improved by 9 and 5 percent, respectively.

In short, the 2014 Corvette Stingray looks to be a winner on all fronts, delivering meaningful improvements in the areas of performance, comfort, style, and efficiency. We’ll know for sure once we’ve had a chance to drive one, an opportunity that can’t come soon enough.

09 | Creased-and-bulged hood was clearly influenced by the ’09 Stingray concept. Lamp housings pair indirect LED lighting with standard HID projector beams. 10 | Efforts to align the C7’s styling with that of other current Chevy models yielded what may be the car’s most controversial feature: its rhomboid taillights. That said, the Camaro-style lenses cohere with the overall design in a way that round lamps would not. 



2014 Corvette Stingray

Preliminary Specifications

Overview

Model: 2014 Chevrolet Corvette Stingray
Body styles/driveline: 2-door hatchback coupe with removable roof panel; rear-wheel drive
Construction: composite and carbon-fiber body panels, hydroformed aluminum frame with aluminum and magnesium structural and chassis components
Manufacturing location: Bowling Green, Ky.

Engine

LT1 6.2L V-8
Displacement (cu in/cc): 376/6162
Bore & stroke (in/mm): 4.06x3.62/103.25x92
Block material: cast aluminum
Cylinder head material: cast aluminum
Valvetrain: overhead valve, two valves per cylinder
Fuel delivery: direct injection
Compression ratio: 11.5:1
Horsepower/kW: 450/335 (est.)
Torque (lb-ft/Nm): 450/610 (est.)

Transmissions

Type: seven-speed manual with Active Rev Match/six-speed paddle-shift automatic

Chassis/Suspension

Front: short/long arm (SLA) double wishbone, cast aluminum upper and lower control arms, transverse-mounted composite spring, monotube shock absorber
Rear: short/long arm (SLA) double wishbone, cast aluminum upper and lower control arms, transverse-mounted composite spring, monotube shock absorber
Active handling: Magnetic Selective Ride Control (avail. with Z51)
Traction control: StabiliTrak, electronic stability control

Brakes

Type: front and rear power-assisted discs with four-piston fixed front and rear calipers (slotted rotors with Z51)
Rotor diameters (in/mm): front—12.6/320 (13.6/345 with Z51); rear—13.3/338

Wheels/Tires

Wheel sizes: front—18x8.5-in (Stingray), 19x8.5-in (with Z51); rear—19x10-in (Stingray), 20x10-in (with Z51)
Tires: Michelin Pilot Super Sport run-flat
Tire sizes: front—P245/40R18 (Stingray), P245/35R19 (with Z51); rear—P285/35R19 (Stingray), P285/30R20 (with Z51)

Exterior Dimensions

Wheelbase (in/mm): 106.7/2710
Overall length (in/mm): 177/4495
Overall width (in/mm): 73.9/1877
Overall height (in/mm): 48.6/1235
Weight distribution (% front/rear): 50/50

11 | An available dual-mode exhaust offers a 27 percent improvement in flow over the existing system, thanks in part to new 2.75-inch pipes. 12 |Brakes are Brembo units featuring fixed four-piston calipers at each corner. Interestingly, the base car’s rotors are larger in the rear (13.3 inches) than in the front (12.6 inches). That’s not the case on the Z51, which gets these slotted 13.6-inch front discs, along with slotted 13.3-inch rears. 13 | Base Stingrays will ride on a staggered-size wheel combo featuring 18-inch front and 19-inch rear diameters. 14 | Z51 wheels differ in their forged-aluminum construction and split-spoke design. They’re 1 inch larger in diameter than the standard rims, but use the same 8.5-inch front and 10-inch rear widths. 15 | This cutaway display shows one of the new Stingray framerails (right) next to a C6 unit. Note the dramatic differences in wall thickness between the two.