jdhommert

copy and pasting bits from the press release


Track-capable Z51 Performance Package including: an electronic limited-slip differential,
dry-sump oiling system, integral brake, differential and transmission cooling, as well as a
unique aero package that further improves high-speed stability.





A smart electronic limited-slip differential (eLSD) is included in the Z51 Performance Package
and continuously makes the most of the torque split between the rear wheels. The system
features a hydraulically actuated clutch that can infinitely vary clutch engagement and can
respond from open to full engagement in tenths of a second. It shifts torque based on a unique
algorithm which factors in vehicle speed, steering input and throttle position to improve steering
feel, handling balance and traction.
“The electronic limited-slip differential transforms the Stingray by optimizing handling for the
driving situation,” said Mike Bailey, vehicle systems engineer, chassis. “By continuously
modulating the torque split between the rear wheels, the eLSD can improve traction
accelerating out of corner, improve stability on the highway and enhance steering turn-in and
responsiveness.”
The eLSD is fully integrated with StabiliTrak and Performance Traction Management systems.
Its calibrations vary among three modes, based on the Drive Mode Selector setting:
 Mode 1 is the default setting for normal driving and emphasizes vehicle stability
 Mode 2 is engaged when electronic stability control is turned off in the Sport or Track
Driver Modes. This calibration enables more nimble turn-in and traction while
accelerating out of a corner
 Mode 3 is automatically selected when Performance Traction Management is engaged.
This calibration has the same function as Mode 2, but is fine-tuned to work with
Performance Traction Management.
Standard Brembo brakes, with four-piston fixed calipers derived from racing, deliver exceptional
stopping power on the street or track. System highlights include:
 12.6-inch (320 mm) front rotors and 13.3-inch (338 mm) rear rotors are standard and
have 35 percent more swept area than previous-generation brakes. Consequently
stopping distance is improved 9 percent
 Dual-cast, slotted 13.6-inch (345 mm) front rotors and 13.3-inch (338 mm) slotted rear
rotors are included with Z51 Performance Package. They have 6percent more swept area




The Corvette Stingray rides on new 18 x 8.5-inch front and 19 x 10-inch rear wheels, while
models with the Z51 Performance Package roll on 19 x 8.5-inch front and 20 x 10-inch rear
forged aluminum wheels. New Michelin Pilot Super Sport run-flat tires developed specifically for
the seventh-generation Corvette deliver comparable levels of grip than the wider tires of
previous models.
As a result, the track-oriented Corvette Stingray with the Z51 Performance Package is capable
of 1g in cornering acceleration – comparable to the 2013 Corvette Grand Sport. Significantly,
that is achieved with narrower and lighter wheels and tires. The reduced “footprint” reduces
rolling resistance, steering effort and road noise, contributing to a more nimble feel, more
immediate steering response and greater touring comfort and efficiency



a. The transmission with the Z51
Performance Package includes specific close-ratio gearing for more aggressive driving.

 Models with the automatic transmission or Z51 Performance Package feature a
functional vent on driver’s left side directing air over a heat exchanger for the
transmission fluid and a similar arrangement on the passenger side that directs air
 over a heat exchanger for the electronic limited slip differential
 Airflow through the differential and transmission heat exchangers

The Z51 Performance Package also includes brake-cooling ducts, a unique rear spoiler
and additional air deflectors for enhanced track capability.

jdhommert

So it looks like:

Better shocks
E-diferential
aero improve ments
bigger wheels and tires
bigger brakes
bigger/better wheels and tires
more agressive tranny ratios

jdhommert

I'd really think they'd have bigger sway bars and maybe springs on the z51 too....