That changeover occurred just a few years after GM began producing Duramax engines, with the LLY arriving in mid-2004. If you ...

The mid-2000s was a period of rapid iteration for GM's Duramax engine. The LLY only lasted a couple of years before GM debuted an updated version of the 6.6-liter diesel with a new code name, LBZ.

Suspension: Custom upper control arms, shortened CV axles (front); ... The 6.6L Duramax LLY in Michael’s truck produces more power than the two early powerplants combined.

Read about this 1970 Chevy Chevelle with a Duramax diesel engine, Garrett twin turbos, and Mickey Thompson tires, only on dieselpowermag.com, the official website of Diesel Power Magazine.

In the world of diesel engines, the Duramax series by General Motors holds a special place and is known for its robust performance and reliability. However, like many modern diesel engines, the ...

Early in the history of Duramax engines, GM changed the LB7 series of engines to LLY, but it can be difficult to tell them apart. Here’s how.