When we began this journey, we wanted to present to you a CP3 injection-pump conversion and a Wehrli Custom Fabrication compound-turbocharger kit installation on a ’15 Chevrolet Silverado 2500HD, ...

In our “The Truth about Twin Turbos,” (July ’10) article, we showed you what it took to design, fabricate, and bolt on a race-proven compound-turbo setup to an LB7 Duramax. That kit replaced both ...

When the LLY Duramax V8 debuted midway through the 2004 model year, it had an SAE-certified output rating of 310 horsepower and 520 pound-feet of torque, with the latter growing by 85 to 605 pounds of ...