There has been no shortage of huge V12 engines over the years, but which lump takes the crown with the largest displacement ever? Massive 12.8-liter displacement from an inline-8 Over four-and-a ...

An curved arrow pointing right. Measuring 18'x12', the GE90X is the largest jet engine ever built. Designed for the upcoming Boeing 777X, GE just turned the engine on for the first time.