Automotiveaddicts iconAutomotiveaddictsSep 21, 2026

GM Teases Massive 8.3-Liter Duramax Mongoose Diesel V8 for 2027 Silverado HD and Sierra HD

General Motors is making it clear that the heavy-duty diesel horsepower war is nowhere near finished. GM has officially teased a new 8.3-liter Duramax turbo-diesel V8 known as the "Mongoose," Full Article »

GM Teases Massive 8.3-Liter Duramax Mongoose Diesel V8 for 2027 Silverado HD and Sierra HD

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General Motors is making it clear that the heavy-duty diesel horsepower war is nowhere near finished.

GM has officially teased a new 8.3-liter Duramax turbo-diesel V8 known as the "Mongoose," Full Article »

General Motors is making it clear that the heavy-duty diesel horsepower war is nowhere near finished. GM has officially teased a new 8.3-liter Duramax turbo-diesel V8 known as the "Mongoose," Full Article »

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General Motors is making it clear that the heavy-duty diesel horsepower war is nowhere near finished. GM has officially teased a new 8.3-liter Duramax turbo-diesel V8 known as the "Mongoose," Full Article »

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