and 3500, in which it produced 340 hp and 455 lb-ft of torque. With its main job to help GM's large trucks and SUVs haul bigger loads, the Vortec 8100 needed to be beefed up to ensure it could ...

Engine, Vortec 6.0L Variable Valve Timing V8 SFI E85-compatible, FlexFuel capable of running on unleaded or up to 85% ethanol (360 hp [268.4 kW] @ 5400 rpm, 380 lb-ft of torque [515.0 N-m] @ 4200 ...

Engine, Vortec 6.0L Variable Valve Timing V8 SFI, E85-compatible, FlexFuel capable of running on unleaded or up to 85% ethanol (360 hp [268.4 kW] @ 5400 rpm, 380 lb-ft of torque [515.0 N-m] @ 4200 ...