With a parade of new aftermarket performance packages for the Chevrolet Corvette C8 coming down the pipeline, it’s important to remember that General Motors has its own line of go-faster eighth-gen Vettes planned as well. That includes the forthcoming C8 Corvette Z06, which, according to one recent report, will produce upwards of 617 horsepower.
In a recent story published by the Australian magazine wheels, the upcoming C8 Corvette Z06 is rumored to boast a naturally aspirated V8 engine related to the twin-turbocharged 4.2L V8 LTA Blackwing engine equipped on the now-discontinued Cadillac CT6-V, with dual overhead cams and a lofty 9,000-rpm rev limit. The V8 in the new C8 Corvette Z06 will have a flat-plane crank and different heads, and will mate to an eight-speed dual-clutch transmission.
The recent wheels story falls in line with previous GM Authority reports. As we’ve covered in the past, the C8 Corvette Z06 is expected to feature the 5.5L V8 LT6 engine, with 32 valves, a flat-plane crankshaft, and atmospheric induction. GM Authority expects output be rated at roughly 600 horsepower, which more or less matches the figures published by wheels. Additionally, GM Authority expects torque figures to fall between 480 pound-feet and 550 pound-feet.
The new powerplant will benefit from lessons learned in the Corvette C8.R racer competing in the IMSA GTLM class. The C8.R is also powered by a naturally aspirated 5.5L V8 with a flat-plane crank, with a configuration that is very similar to the 5.5L unit in the upcoming Z06.
As GM Authority covered previously, the naturally aspirated 5.5L V8 returns the Corvette Z06 nameplate to its roots, offering street-legal performance that is suited for use on the racetrack. In addition, the new Z06 will boast unique exterior styling, including a massive rear wing and lightweight carbon fiber wheels as part of the optional Z07 performance package, plus extra-wide rubber measured at 275/30ZR20 in front, and 345/25ZR21 in back.
Look for the new 2022 Corvette Z06 to debut in July.