GM Teases 8.3L Duramax 'Mongoose' to Challenge Ford in HD Diesel War

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Source: Motor1.com
GM Teases 8.3L Duramax 'Mongoose' to Challenge Ford in HD Diesel War
Photo: Motor1.com
TL;DR Summary

GM teases an 8.3-liter Duramax V8 turbo-diesel codenamed 'Mongoose' for the 2027 Silverado HD and Sierra HD, signaling a direct challenge to Ford's Power Stroke; exact horsepower and torque aren’t released yet, but GM says it will replace the current 6.6L Duramax and could debut with styling updates before year’s end.

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