Engine & Transmission Specifications
Duramax LBZ Diesel Engine Specifications
| Type: |
90º V-8 charge-cooled turbodiesel |
| Displacement (cu in/ cc): |
403 / 6599 |
| Bore x stroke (in x mm): |
4.06 x 3.9 / 103 x 99 |
| Block material: |
cast iron with induction-hardened cylinder liners |
| Cylinder head material: |
cast aluminum |
| Intake manifold: |
cast aluminum |
| Exhaust manifolds: |
cast nodular iron with steel pipe extension |
| Compression ratio: |
16.8:1 |
| Valve configuration: |
overhead valve, four valves per cylinder |
| Valve lifters: |
Mechanical roller |
| Firing order: |
1 – 2 – 7 – 8 – 4 – 5 – 6 – 3 |
| Fuel system: |
direct injection diesel with high-pressure common rail |
| Horsepower |
360 @ 3200 rpm |
| Torque (lb-ft / Nm): |
650 @ 1600 rpm |
| Fuel shut off: |
3450 rpm |
| Crankshaft: |
forged steel |
| Connecting rods: |
forged steel, stress-fractured |
| Additional features: |
Turbocharger with charge cooling; exhaust braking (medium duty only);
heated air intake; GM Oil Life System |
|
Allison M1000 6 Speed Transmission
| Type: |
Six-speed rear-wheel-drive, electronically controlled,
automatic overdrive transmission with torque converter clutch |
| Engine range: |
6.6L - 8.1L |
| Maximum engine torque: |
650 lb-ft |
| Maximum gearbox torque: |
900 lb-ft |
| Gear ratios: |
|
| First: |
3.1 |
| Second: |
1.81 |
| Third: |
1.41 |
| Fourth: |
1 |
| Fifth: |
0.71 |
| Sixth: |
0.61 |
| Reverse: |
4.49 |
| Maximum shift speed: |
4850 rpm |
| Maximum validated gross vehicle weight: |
9200 – 2500 HD series |
| 6-position quadrant: |
P, R, N, D, M, 1 |
| Case material: |
die cast aluminum |
| Shift pattern: |
(2) two-way on/off solenoids |
| Shift quality: |
force motor control / adaptive shifts |
| Torque converter clutch: |
Variable Bleed Solenoid Control |
| Converter size: |
310mm (diameter of torque converter turbine) |
| Fluid type: |
DEXRON® VI |
| Transmission weight: |
dry: 150 kg (330 lb) |
| Fluid capacity (approximate): |
shallow pan: 12L (13 qt.) (dry) |
| Power take off: |
provision available |
| Pressure taps available: |
main pressure |
| Assembly sites: |
Baltimore , Md. |
| Additional features: |
Tap-shift range selection mode; elevated idle mode;
low traction mode; shift stabilization; tow/haul; grade braking |
|
