A new Corvette Grand Sport has not been announced yet, but you would not know it from how hard Chevrolet is now working to hide it. After internal leaks pointed to a new LS6 V8 and a 2027 C8 Grand Sport, GM has quietly started stripping those references from its own systems, and that cleanup is only making fans more convinced the car is real.
Glenn Paulina
A New LS6 V8 Leaks Into View
The story started when enthusiasts spotted a new Gen 6 “LS6” V8 entry inside GM’s internal parts catalog. For a brief window, that listing showed a 6.7 liter small block with both direct and port injection, tagged for 2027 Corvette applications. Separate leaks tied that engine to a future C8 Grand Sport.
On top of the catalog entry, a separate leak from dealer systems showed Grand Sport specific RPO codes, including a Z15 Heritage Package, sitting in the 2027 Corvette section. Then a development car surfaced in a now deleted video with an exhaust note that did not match any existing C8. Put together, that is more than just forum fantasy.
GM Hits Delete On Its Own Breadcrumbs
Once screenshots of the LS6 listing started circulating, GM appears to have gone into damage control. Forum users who checked the same parts catalog in late December found that the entire LS6 entry had been scrubbed. One long time member joked that “the Parts Catalog Manager got reamed,” posting that “all reference to ANYTHING has been deleted” and comparing it directly to the time GM disguised the LT7 ZR1 engine in the system. Moderators were warned to “save the screenshots while you can.”
That is the behavior of a company trying to stuff the genie back into the bottle. It also fits a recent pattern, as Chevrolet is already playing games with numbers on the existing C8 range. When you see an LS6 entry appear, vanish, then get joked about by insiders, it looks less like a mistake and more like a preview that got out too soon.
Obviously none of this is a formal confirmation, GM can still change displacement, branding or timing before anything reaches showrooms. What these leaks and deletions do show is that a new pushrod V8 is far enough along to live inside GM’s own tools, and it is tightly connected to a 2027 C8 Grand Sport package.
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