The powerful V8 engines did so bearing the name LB7, and yes, they were eventually replaced by Duramax builds branded LLY. That changeover occurred just a few years after GM began producing ...

Unfortunately, Duramax injectors are both expensive and difficult to reach in the engine compartment for replacement, which prompted GM to extend its injector warranty to 200,000 miles. The LB7 is ...

Our ’02 LB7 ... engine building enterprise. L&R can handle anything from classic flatheads to large marine diesels and has a particular specialty in building performance Duramax engines.

a Duramax engine can be expected to last around 200-300,000 miles without major issues. In 2001, the 6.6-liter, 300-horsepower LB7 was the first Duramax engine used in a GM vehicle (Chevrolet ...