The Duramax Diesel 6600 V8 is the most powerful engine in its class.(1) It delivers more horsepower than diesel engines from Ford and Dodge. Available in Silverado 2500HD and 3500, and Sierra 2500HD and 3500 models.

• 300 horsepower at 3100 rpm and 520 lb.-ft. of torque at 1800 rpm.
• Center-mounted turbocharger helps provide more power.
• Common rail fuel injection, developed by Bosch, optimizes fuel injection rates for reduced combustion noise.
• Deep-skirt block design, case hardening of the block, one-piece aluminum crankcase and one-piece aluminum bellhousing help reduce noise, vibration and harshness.

1 Based on horsepower and GM large pickup segment.