6.6 L Duramax LMM
Nearly identical to the LBZ, the LMM debuted midway into the 2007 model year (2007.5). The slight variations between the LBZ and LMM gave the LMM a small boost in power output. The LMM features new emissions equipment that meet strict new diesel emission laws, and is currently in production today. Using a diesel particulate filter (DPF) and active regeneration technology, the LMM is able to cut particulate matter emissions by 90 percent.
6.6 L LMM Specifications:
Configuration: |
90 degree V8 |
Displacement: |
403 cubic inches, 6.6 liters |
Compression Ratio: |
16.8:1 |
Bore: |
4.06 inches |
Stroke: |
3.90 inches |
Aspiration: |
Intercooler & variable geometry turbocharger |
| Injection | 26,000 psi Bosch high pressure common rail w/ CP3 injection pump. |
Valvetrain: |
OHV, 4 valves per cylinder |
Oil Capacity: |
10 quarts w/filter |
Weight: |
approx. 835 lbs |
Horsepower: |
365 hp @ 3,100 RPM |
Torque: |
660 lb-ft @ 1,800 RPM |
| Max Engine Speed: | 3,450 RPM |
| Emissions: | - Diesel particulate filter (DPF) - Exhaust gas recirculation (EGR) - Catalytic converter |
6.6 L LMM Information:
- LMM applications include the Chevrolet Silverado HD, GMC Sierra HD, Chevrolet Kodiak, GMC Topkick.
- Meets strict 2007 EPA mandated emission requirements for diesel engines.
- Emissions Equipment includes a diesel particulate filter, EGR cooler, & the use of active regeneration.
- Emissions equipment lowers fuel efficiency considerably over previous models.