6.0L Power Stroke vs. 6.7L Cummins vs. 6.6L Duramax
|
6.0L Power Stroke |
6.7L Cummins |
6.6L Duramax LLY |
Production Years: |
2003 - 2007 |
2007.5 - present |
2004 - 2006 |
Manufacturer: |
International Navistar |
Cummins |
DMAX (GM, Isuzu joint venture) |
Block/Head Material: |
Iron/Iron |
Iron/Iron |
Iron/Aluminum |
Configuration: |
V-8 |
Inline 6 |
V-8 |
Displacement: |
6.0 liters, 365 cubic inches |
6.7 liters, 408 cubic inches |
6.6 liters, 403 cubic inches |
Compression Ratio: |
18.0:1 |
17.3:1 |
17.5:1 (Lowered to 16.8:1 in 2006) |
Bore x Stroke: |
3.74 x 4.13 inches |
4.21 x 4.88 inches |
4.06 x 3.90 inches |
Injection System: |
Hydraulic electronic unit injection (HEUI) |
high pressure common rail |
High pressure common rail, CP3 injection pump |
Aspiration: |
Variable Geometry Turbocharger (VGT) |
Variable geometry turbocharger (VGT) |
Variable Geometry Turbocharger (VGT) |
Valvetrain: |
overhead cam, 4 valves per cylinder |
overhead valve, 4 valves per cylinder |
over head valve, 4 valves per cylinder |
Weight: |
approx. 966 lbs |
N/A |
835 lbs (approx.) |
Peak Horsepower: |
325 hp @ 3,300 RPM |
350 hp @ 3,013 RPM |
320 hp @ 3,000 RPM (2006 figures) |
Peak Torque: |
570 lb-ft @ 2,000 RPM |
650 lb-ft. @ 1,500 RPM w/ auto trans |
560 lb-ft @ 1,600 RPM (2006 figures) |
Notes: |
• TorqShift transmission provides crisp, firm shifts and its Tow/Haul feature feels smarter than its competitors |
• Factory integrated exhaust brake technology |
• First Duramax to receive advanced emissions controls |