Duramax 6.6 Liter Diesel Engine Specs 2024. Information about gm's 6.6l turbo diesel v8 duramax lml engine used in the chevy silverado hd and gmc sierra hd, including specs, applications, and more. With this inside look, gale finds upgrades to the 2024 gen 2 engine that you won’t see on a spec sheet,.

Let’s dig down to see what has been done to improve the duramax. The truck’s l5p duramax diesel engine received a substantial bump in power and torque thanks to a stout list of upgrades, including a new turbocharger, improved piston.