Questionable Corvette C8 leak shows hybrid powertrain with 922 lb-ft of torque

The leaked document includes a few implausible engine specs.

The C8 Chevrolet Corvette rumor mill has continued to spin as a sketchy document purports to list all engines planned for the mid-engine car.

Posted on CorvetteForum and spotted by Muscle Cars and Trucks, the spreadsheet lists the LT1, LT4 and LT5 6.2-liter V8s from the C7 lineup, followed by LT2, LT6 and LT7 powerplants for the C8.

"I won't even try to speak for the validity," the forum post cautions. "Got this from a guy who knows a guy. Take it for what it's worth."

The LT2 is shown with 469 horsepower and 515 pound-feet of torque, which does not match the official specs of 495 horsepower and 470 pound-feet of torque.

Other entries appear to mesh with rumors of a 5.5-liter V8 offered in naturally-aspirated, turbocharged and hybrid form. Output for naturally aspirated LT6 is listed as 600 horsepower and 620 pound-feet, while the twin-turbo LT7 jumps to 850 horses and 750 pound-feet. The electrified LT7 configuration has a plausible 922 pound-feet of torque with a questionable 850 horsepower that matches the non-hybrid. Interestingly, the chart also shows an LT2 hybrid but with no turbocharger and no change in output from the naturally-aspirated specs.

The source of the curious document is a mystery. It seems unlikely that an outright fabrication would erroneously list the already-known specs for the LT2 engine. If the spreadsheet is a genuine General Motors document, the confusing numbers could represent placeholders or preliminary specs during development.

In any case, the list adds to evidence that the company is working on a 5.5-liter engine that could make its naturally-aspirated debut in the Z06, add turbocharging for the ZR1 and finally go hybrid for the rumored Zora flagship.

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