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

which has consistently been designed with reliable engines. The LB7 Duramax engine is a turbocharged, intercooled V8 that ...

General Motors’ 6.6-liter Duramax LB7 was a state-of-the-art V8 diesel engine with four-valves-per-cylinder producing 235 to 300 hp and 500 to 520 lb-ft of torque. In addition to a turbocharger ...

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 ...