The third diesel engine in our tech article recap is GM’s 6.6L Duramax, which came on the scene in 2001. The powerlant, code-named LB7, was the first modern-era oil-burner to feature common-rail fueling (Cummins didn’t enter that arena in 2003), and it put out 300 hp and 520 lb-ft of torque. In subsequent years, LLY

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