The popularity of various engine designs typically fades over time as technological advances provide more power, better fuel economy, or both. Flathead designs gave way to overhead valves, and inline ...

It’s back to the future, GM style. The automaker’s first inline six-cylinder engine since 1985 is bound for production next year, with 270 horsepower and 275 pounds-feet of torque. The Vortec 4200 ...