GM's 2.7L TurboMax engine is a great example of how automakers are favoring downsizing and turbocharging in favor of high cylinder counts and large capacities these days. The engine, which was ...

In production since 2018, the 2.7-liter turbo inline-four engine referred to as L3B has been hit with a customer satisfaction program. As it happens, a handful of engines may feature cracked blocks.