5 GM s Mega Max Engine REVEALED The V8 That Kills Turbos

Is the era of the small, high-stress engine finally over? For years, we’ve been told that big-block V8s were a thing of the past. But behind the scenes at General Motors, the whispers of a massive 8.3L "MegaMax" V8 are turning into a roar. As we head toward the 2027 model year, this engine isn't just a rumor—it’s a potential game-changer for the Silverado, Sierra, and GM’s entire heavy-duty commercial lineup.
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