For those who were still thinking the ZR1 was coming with the ME's twin turbo, DOHC motor, not so. But repeat inside sources keep saying it will be 750 HP.

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Quote Originally Posted by GMAuthority
There’s a lot we do know about the 2018 C7 Corvette ZR1, but one major variable has remained a mystery: what’s powering it?

Clips from various videos have revealed a decidedly supercharged engine note, which has led many to believe a more potent 6.2-liter supercharged LT4 V8 is lurking under the hood. Now, we have some of the clearest evidence yet an LT4 will not be employed, but an all-new 6.2-liter supercharged LT5 V8 will be present.

LSXMag uncovered the RPO code “LT5” in General Motors’ RPO system search tool. Corresponding with the “LT5” code is the following information:

Eight cylinders
Spark Ignition Direct Injection
Aluminum construction
Variable Valve Timing
Notice something missing? There’s no mention of dual overhead cams. Instead, it seems more likely the ZR1 will stick with a traditional cam in block design. Though, this information doesn’t support the previously leaked documents showing a DOHC design for the LT5. That information, however, didn’t mention a supercharger.

Instead, the LT5 seems poised to improve the fuel system and will tack on a larger supercharger. The report states Eaton’s new R2650 unit may be tapped for forced induction duties. There is no mention of transmission or other components, though. We may see the C7 Corvette ZR1 gain the 10-speed automatic and DSSV dampers, both of which are available with the Camaro ZL1 and ZL1 1LE, respectfully. It only seems fair the king of Corvettes gains the latest performance trickery.

Finally, we’ll likely see an active aerodynamic system of sorts debut as well, per patent discoveries earlier this year.

One thing seems to be more clear than ever: the C7 Corvette ZR1 will make more than 650 horsepower and it will be a force to be reckoned with.

Read more: LT5 Code Revealed For 2018 C7 Corvette | GM Authority