The LZ8 3900 has the same Variable Cam Timing technology as the LZ9. The 2007 model year introduces the Active Fuel Management system (formerly known as Displacement on Demand), which can turn off a bank of cylinders under a light load for increased fuel economy. Output is slightly lower than the LZ9 at 233 hp (174 kW) and 240 lb⋅ft (325 N⋅m).
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