General Motors' Duramax ... LLY debuted at similar power numbers to the LB7 before a 2006 update kicked things up to 310 hp and 605 lb-ft of torque. The LLY came with a new variable-vane turbo ...

It was replaced by the 310-hp LLY Duramax, with 605 lb-ft of torque, halfway through the 2004 model year. More changes with increased power came on a regular basis, with the LBZ in 2006 ...