6.6L V-8 L5P DURAMAX® TURBO DIESEL
HEAVY DUTY PULLING POWER
HORSEPOWER: 470 HP (350 KW) @ 2800 RPM*
TORQUE: 975 LB-FT @ 1600 RPM*
CYLINDERS: 8
FUEL TYPE: ULTRA-LOW SULFUR DIESEL AND B20 BIODIESEL
6.6L V-8 L5P Features & Specifications
The L5P engine advances General Motors’ Duramax® legacy for powerful, quiet, and durable diesels by offering more of those attributes with greater efficiency compared to the previous 2023 and older L5P engines. The latest L5P is even more capable with an impressive power rating of 470 horsepower and 975 lb.-ft. of torque. For confident towing power from the start, ninety percent of peak torque is produced from 1,550 rpm thru 2,850 rpm.
Type:
6.6L V-8 L5P Turbo-Diesel
Displacement:
6604 CC (403 CI)
Engine Orientation:
Longitudinal
Compression Ratio:
16.0:1
Valve Configuration:
Overhead Valves
Valves per Cylinder:
Four
Assembly Site:
Moraine, Ohio of Globally Sourced Parts
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
Horsepower:
470 HP (350 kW) @ 2800 rpm*
Torque:
975 lb.-ft. (1,322 Nm) @ 1600 rpm*
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
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
*As tested in the Chevrolet Silverado Heavy Duty and GMC Sierra Heavy Duty.