GM's new 8.3L Duramax | Project Mongoose

[BoostN]

GM has confirmed the long rumored new Duramax platform for the 2027 HD trucks. It's a 8.3L V8, with no power numbers yet. As you can see in the video, they are attacking the "Scorpion", which was Ford's code name for the 6.7 Powerstroke.

Source: https://gmauthority.com/blog/2026/0...ax-turbo-diesel-v8-engine-in-new-teaser-video