GM 2.8L I4 LWN

Turbo Diesel

HORSEPOWER: 445 HP @ 2800 RPM*

TORQUE: 910 B_FT @ 1600 FRM*

CYLINDERS: 8

FUEL TYPE: DISEL

This next-generation redesign offers more horsepower and torque than ever — an SAE-certified 445 horsepower (332 kW) and net 910 lb.-ft. (1,234 Nm) — to enable easier, more confident hauling and trailering. Higher boost pressure from the turbocharger, compared to the previous engine, helps the L5P produce more power.

Along with a 19 percent increase in max torque over the current Duramax 6.6L, the redesigned turbo-diesel’s performance is quieter and smoother, for greater refinement. In fact, engine noise at idle is reduced 38 percent.

Type
6.6L V-8 L5P Turbo-Diesel
Displacement
403 ci
Compression Ratio
16.0:1
Valve Configuration
Overhead
Assembly Site
Moraine, Ohio
Valve Lifters
Mechanical roller
Firing Order
1 - 2 - 7 - 8 - 4 - 5 - 6 – 3
Bore x Stroke
103 x 99 mm
Fuel System
DI with high-pressure common rail
Fuel Type
Ultra-low sulfur diesel and B20 biodiesel
Maximum Powered Speed
3450 rpm
Maximum Braking Speed
4800 rpm
Emissions Controls
Cooled Exhaust Gas Recirculation (EGR), Selective Catalytic Reduction (SCR), Diesel Particulate Filter (DPF), Intake throttle
Horsepower
445 hp (322 kW) @ 2800 rpm*
Block
Cast iron
Cylinder Head
Cast aluminum
Intake Manifold
Cast aluminum
Exhaust Manifold
Cast nodular iron with steel pipe extension
Main Bearing Caps
Cast nodular iron
Crankshaft
Forged steel
Camshaft
Steel
Connecting Rods
PM iron
Engine Oil Capacity
10qt/9.5L