3.0L I-6 LM2 Duramax® Turbo-Diesel


Horsepower:  277 HP (207 kw) @3750 RPM*
Torque:  460 lb-ft (624 Nm) @1500 RPM*
Fuel Type:  Ultra-low sulfur diesel and B20 Biodiesel
3.0L LM2 Turbo Diesel Engine from GM Powertrain

& Specifications

Diesel engines are all about torque, and when taking off under load, the LM2 delivers it at low rpm, where it counts. The engine’s peak torque of 460 lb.-ft. (624 Nm) is achieved at only 1,500 rpm, with 85 percent of that max twisting force available by 1,250 rpm. This gives drivers an immediate feeling of pulling power as soon as they touch the gas pedal. Noise-attenuating elements like acoustic resonators and fully decoupled cam covers with rubber-isolated fasteners help curb sound levels for exceptional refinement.

type: 3.0L I-6 LM2 Turbo Diesel
displacement: 183 ci
engine orientation: longitudinal
compression ratio: 15.0:1
valve configuration: dual overhead camshafts
valves per cylinder: 4
assembly site: Flint, MI
valve lifters: hydraulic
firing order: 1 - 5 - 3 - 6 - 2 - 4
bore x stroke: 84 x 90 mm
fuel type: ultra-low sulfur diesel and b20 biodiesel
horsepower: 277 hp (207 kw) @3750 rpm*
torque: 460 lb-ft (624 nm) @1500 rpm*
maximum engine speed: 5000 rpm
weight: 467 lbs (212kg)
emissions control: hp-egr (uncooled) + lp-egr (cooled)
close coupled diesel oxide catalyst (ccdoc) selective catalytic reduction on particulate filter (scrf)
selective catalytic reduction (scr) ammonia slip catalyst (asc)
block: cast aluminum
cylinder head: cast aluminum
intake manifold: composite
exhaust manifold: nodular iron
main bearing caps material: nodular iron
crankshaft: forged steel
camshaft: steel-assembled
connecting rod: forged steel
*As tested in Chevrolet Silverado