So, when looking at Chevrolet's Duramax engine lineup, aside from cubic inches, what sets the 3.0L and 6.6L engines apart? For even more insight, the history behind the legendary Duramax diesel ...

Lastly, this one’s a new 3.0L inline-six Duramax diesel married to a 10-speed automatic. That 277 hp, 460 lb-ft new engine is a $3,245 option over the 355 hp 5.3L V8 and $350 more than the 420 hp 6.2L ...