The Z06 has usually been a trickle-down of the Corvette GT car. Aero tweaks were unique to the .R, tricks like hood-evacuated radiator air flow, rear-fender mounted cooling ducts for various cooling system (like the differential), and a rear diffuser. Now that the C7 boasts these tweaks from the get-go, the C7.R more closely resembles its street brethren than before…
Chevrolet's choice of color for the new 2014 Z06 is no mistake, they want you to see the connection.
In reality, though, most of the go-fast hardware is entirely unique to the C7.R. While the new C7.R motor features direct injection, it will likely be a downsized motor, somewhere in the 5-liter range to play fair with similar GT class racers for LeMans and Tudor USC. The direct injection is said to increase fuel efficiency by 3%. While sounding marginal, Chevrolet claims it will drop an entire fuel stop during a 24-hour endurance race; those few minutes count. Transmission will of course be a sequential box. Suspension will likely turn to coil-overs as well (Like the C5.R and C6.R), ditching the rear transverse leaf spring in favor of the infinitely easier to adjust coil sprung suspension.
from The Truth About Cars http://www.thetruthaboutcars.com
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