by Michael Gauthier
- The redesigned Silverado and Sierra are expected to get a new 6.7-liter V8 engine.
- It should be closely related to the LS6 that recently debuted in the 2027 Corvette.
- Mill could produce around 460 hp and 510 lb-ft of torque in the pickup truck.
Chevrolet recently announced the 2027 Corvette will be getting an all-new 6.7-liter V8 engine. However, it likely won’t be limited to the sports car for very long.
Quite the opposite as the mill is likely coming to the 2027 Chevrolet Silverado and GMC Sierra. It’s slated to replace the company’s problematic 6.2-liter V8 and the company alluded to this as they said the “LS6 represents the start of the sixth-generation of Small Block V8s, extending a legacy more than 70 years in the making.”
More: GM Confirms New Silverado And Sierra Are Almost Ready To Break Cover
In the Corvette, the engine produces 535 hp (399 kW / 542 PS) and 520 lb-ft (704 Nm) of torque. That’s significantly more than the Stingray’s old 6.2-liter V8, which developed up to 495 hp (369 kW / 502 PS) and 470 lb-ft (637 Nm) of torque when equipped with the Z51 Performance Package.
The big question is how this will translate to the trucks, where the outgoing engine produces 420 hp (313 kW / 426 PS) and 460 lb-ft (624 Nm) of torque. If the increase from the Stingray is any indication, we could be looking at a gain of around 40 hp (30 kW / 41 PS) and 50 lb-ft (68 Nm). That would bring the Silverado and Sierra up to roughly 460 hp (343 kW / 466 PS) and 510 lb-ft (691 Nm).
Those numbers should be taken with a grain of salt, but they’d enable the engine to easily eclipse Ram’s 395 hp (295 kW / 400 PS) 5.7-liter Hemi V8 and 420 hp (313 kW / 426 PS) twin-turbo 3.0-liter Hurricane inline-six. However, the 6.7-liter V8 would likely fall short of the RHO’s rating of 540 hp (403 kW / 548 PS) and 521 lb-ft (706 Nm) of torque.
It’d be a similar story with Ford as the 6.7-liter V8 could wipe the floor with most of the Blue Oval’s engine lineup. The only things that would come close are the F-150 Raptor’s 450 hp (335 kW/456 PS) twin-turbo 3.5-liter EcoBoost V6 and the R’s 720 hp (537 kW / 730 PS) supercharged 5.2-liter V8.
We’ll learn more later this year, but the 2027 Silverado and Sierra are expected to offer an assortment of other engines including a 2.7-liter four-cylinder turbo, a 3.0-liter turbodiesel inline-six, and a new 5.7-liter V8.
