The Chevrolet Silverado will reportedly get a new sixth-generation V8 gasoline engine, but the larger 6.7-liter version will be reserved for the latest Chevrolet Corvette Grand Sport.
Accordingly GM AuthorityThe next generation of General Motors’ “LS” V8 engine family will be used in Chevrolet’s full-size pickup truck lineup in 6.6-liter form, contrary to previous speculation that the Ford F-150, Ram 1500 and Toyota Tundra rival would adopt the new Grand Sport’s 6.7-liter unit.
Official confirmation from GM is still pending and GM Specialty Vehicles (GMSV) could not confirm details for Australia or New Zealand.
Announced last month for the track-focused Corvette Grand Sport, the 6.7-litre V8 produces 393kW of power and 705Nm of torque – making it the most powerful naturally aspirated V8 engine ever installed in a production Corvette.
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The performance is also significantly higher than that of the most powerful Silverado with a V8 petrol engine currently sold in Australia: the 6.2-litre ZR2 produces 313 kW and 624 Nm. The Silverado HD’s 6.6-liter turbodiesel V8 produces 350 kW and 1332 Nm.
It was also confirmed that the new 6.7-liter V8 will replace the current LT2 6.2-liter engine in the entry-level model Corvette Stingray – which is related to the L87 V8 used in the Silverado – fueling speculation that it would be adopted into GM’s pickup lineup.
However, GM engineers are said to have originally planned a 6.6-liter engine for both sports car and truck applications before increasing capacity for the Corvette during development.
“We wanted to get it to ‘just’ 6.6 liters, and then we started playing around and realized that by adding two millimeters to the stroke we could get more power without compromising on anything else,” a GM engineer reportedly said GM Authority.
With the standard crankshaft, the sixth-generation LS-V8 has a displacement of 6.6 liters and is expected to power both the Silverado and the GMC Sierra, which is not sold in Australia.
The Silverado remains the only full-size V8-powered US pickup sold locally after Ram removed V8 power from its lineup in 2025, while Ford and Toyota only offer turbocharged V6 petrol versions of the F-150 and Tundra in Australia.
In May 2025, GM announced an $888 million (then A$1.4 billion) investment in its Tonawanda power plant in Buffalo, New York, to produce the new V8 engines starting in 2027.
The development follows a recall affecting the current L87 V8 used in the Silverado and other GM models, affecting 9451 pickup trucks in Australia and approximately 721,000 worldwide.
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