We don't know the exact number, but there must be literally hundreds of thousands of 6.2L and 6.5L engines roaming the world. Loved by some and despised by others, these engines have the distinction ...

General Motors has been using Duramax diesel engines in certain workhorse models for nearly a quarter century. The 6.6-liter V8 version which powers Chevy Silverado 2500/3500HD and GMC Sierra Heavy ...