2018 GMC Sierra HD 445 HP Duramax Diesel V8 Review – GMC’s 2018 Sierra HD range has been enhanced with the add-on of the firm’s redesigned Duramax 6.6-liter turbo-diesel V8.
Now stronger than ever before, the new Duramax V8 will substitute the present unit in GMC’s range and is appealing better refinement thanks to its new construction and variety of up to date features.
On the statistical front, the engine pumps out 445 hp and 910 lb-ft of torque, a 19 percent torque climb over the pre-existing V8. Impressively, 90 percent of the unit’s torque is available at a low 1,550 rpm till 2,850 rpm, producing the Sierra HD especially beneficial for towing.
To obtain the further power and torque, GMC went to town with the engine. For starters, there is a new cylinder block and cylinder heads, improved oil and coolant-flow capacity, updated electronically-controlled turbocharger, a distinct solenoid fuel system, B20 bio-diesel compatibility and a full-length damped metal oil pan and enhanced rocker cover, two components which make the engine quieter than the outdated unit. Someplace else, the camshaft information is adjusted, more aiding in the greater power.
As previously comprehensive, this engine will come complete with a tailor-made air intake system that necessitates a notable hood scoop becoming installed.