GM Unleashes 8.3-Liter Duramax Mongoose To Outpower Ford's Scorpion
GM confirms an all-new 8.3-liter Duramax turbodiesel V8 to power 2027 Silverado HD and Sierra HD pickups, targeting Ford's 6.7-liter Power Stroke diesel.
Key Takeaways
- GM confirms an all-new 8.3-liter Duramax turbodiesel V8.
- The engine will power refreshed 2027 Chevrolet Silverado HD and GMC Sierra HD pickups.
- GM’s ‘Mongoose’ engine is a shot at Ford’s ‘Scorpion’ diesel.
- The 8.3-liter Duramax represents a 26-percent increase in displacement over the current 6.6-liter Duramax.
- GM is targeting Ford’s 6.7-liter Power Stroke diesel with its new engine.
What’s Behind the Mongoose?
The horsepower wars are alive and well in the heavy-duty pickup truck segment. GM’s new 8.3-liter Duramax turbodiesel V8 is the latest salvo in this battle, and it’s clear that GM is targeting Ford’s 6.7-liter Power Stroke diesel.
The name ‘Mongoose’ is no coincidence, as it’s a direct reference to Ford’s ‘Scorpion’ diesel. GM’s teaser features an actual mongoose hunting a scorpion, leaving no doubt about the intended target.
How Big is the 8.3-Liter Duramax?
The new engine represents a massive 26-percent increase in displacement over the current 6.6-liter Duramax. While size doesn’t automatically translate into class-leading output, GM would look rather silly if its new engine couldn’t at least make Ford sweat.
For perspective, the current 6.6-liter Duramax makes 470 hp (350 kW) and 975 lb-ft (1,322 Nm) of torque. Ford’s high-output 6.7-liter Power Stroke currently manages 500 hp (373 kW) and a whopping 1,200 lb-ft (1,627 Nm). Ram’s latest 6.7-liter Cummins sits at 430 hp (321 kW) and 1,075 lb-ft (1,458 Nm).
What’s Next for the 8.3-Liter Duramax?
GM hasn’t said whether the 8.3-liter will completely replace today’s 6.6-liter Duramax or become a higher-output option. We also don’t know which Silverado HD and Sierra HD configurations will get it. Those details are coming later.
For now, we just know the target and that GM is reasonably confident that it’s about to outduel Ford.
How Does the 8.3-Liter Duramax Compare to the Competition?
GM’s new engine is clearly targeting Ford’s 6.7-liter Power Stroke diesel, but how does it compare to other engines in the segment? Only time will tell, but one thing is certain: the horsepower wars are far from over.
Specifications
| Specification | Value |
|---|---|
| Displacement | 8.3 liters |
| Cylinder count | 8 (V8) |
| Power (current 6.6-liter Duramax) | 470 hp (350 kW) |
| Torque (current 6.6-liter Duramax) | 975 lb-ft (1,322 Nm) |
Frequently Asked Questions
Q: What is the 8.3-liter Duramax?
The 8.3-liter Duramax is a new turbodiesel V8 engine from GM, designed to power the 2027 Chevrolet Silverado HD and GMC Sierra HD pickups.
Q: What is the ‘Mongoose’?
The ‘Mongoose’ is the nickname for GM’s 8.3-liter Duramax engine, which is a shot at Ford’s ‘Scorpion’ diesel.
Q: How big is the 8.3-liter Duramax?
The 8.3-liter Duramax represents a 26-percent increase in displacement over the current 6.6-liter Duramax.
