Next-Gen GM HD Trucks To Introduce New 6.6L V-8 Gasoline Engine

General Motors is currently hard at work on its next-generation full-size, heavy-duty trucks – the 2500HD and 3500HD versions of Chevy’s 2020 Silverado and GMC’s 2020 Sierra. And now, GM Authority has discovered that these future GM HD trucks – which we have seen undergoing testing many times before – will introduce an all-new eight-cylinder gasoline engine.

According to sources familiar with the automaker’s plans, the 2020 model year heavy duty GM trucks will utilize a new gasoline V8 engine displacing 6.6 liters. The motor will make around 400 horsepower and 450 pound-feet of torque – representing notable improvements of 40 horsepower and 70 pound-feet of torque – over the Vortec 6.0L V8 L96 that currently serves as the base engine in the current Silverado HD and Sierra HD.

The GM HD trucks will be completely overhauled for 2020 model year. The lineup will consist of the 2020 Silverado HD and 2020 SierraHD, in 2500HD and 3500HD guises.

Expect the new HD trucks to adopt an all-new exterior design similar to their respective light duty variants, while growing in size, shedding weight, improving capability, and having more comfort and convenience features, especially when it comes to towing technologies. An expanded model range consisting of Silverado Trail Boss and Sierra AT4 models is also expected.

Expect a launch in the third quarter of 2019 for the 2020 model year.

(Source: GM Authority)

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