Codenamed LT4, the 6.2-liter engine will return next year in the CT5-V Blackwing that replaces the CTS-V. Camouflaged from head to toe, the prototype in the following video definitely sounds like it has eight cylinders and forced induction.
Spied by Instagram user @c_zr1 with a manufacturer plate and a decklid spoiler, the prototype can be seen accelerating from a stop and rowing through some gears. If you listen closely, you will also notice that the short pauses between the shifts are the trademark of a good ol’ six-speed manual transmission.
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