Duramax I6 engine
{{see also|Duramax (disambiguation){{!}}Duramax}}
The Duramax I6 engine is a diesel engine available in select models of General Motors light-duty trucks and SUVs. Applications include the Chevrolet Silverado/GMC Sierra 1500, Chevrolet Suburban/GMC Yukon XL, Chevrolet Tahoe/GMC Yukon, and Cadillac Escalade (both short wheelbase and ESV). The engine was developed together with Opel, who are manufacturing three- and four-cylinder versions displacing 1.5 and 2.0 liters, using the same engine architecture.
{{Infobox engine
| name = Duramax I-6
| image =
| manufacturer =
| aka = LM2 (until 2024)
LZ0 (2023-present)
| production =
| predecessor =
| successor =
| configuration = Inline 6
| displacement = {{convert|2993|cc|in3}}
| bore = {{convert|84|mm}}
| stroke = {{convert|90|mm}}
| block = Cast aluminum
| head = Cast aluminum
| valvetrain = DOHC
| timing = Chains
| compression = 15.0: 1
| supercharger =
| turbocharger =
| turboboostpressure =
| operating principle = Diesel
| fuelsystem = Common rail direct fuel injection
| management = GM D1P-E98
| fueltype = {{ubl|ultra-low-sulfur diesel|B20 biodiesel|EN 590 diesel}}
| oilsystem =
| coolingsystem =
| idle =
| redline =
| power = {{convert|277-305 |hp |kW}}
| specpower = 92.3-101.7 hp/L
| torque = {{convert|460-495 |lbft |Nm}}
| length = {{convert|908 |mm}}
| width = {{convert|914 |mm}}
| height = {{convert|903 |mm}}
| diameter =
| weight = {{convert|212 |kg}}
| emissions level = Tier 3 Bin 160
| emissions control =
}}
Engine details
- Displacement: 3.0L
- Configuration: Inline 6
- Horsepower: 277-305 hp @ 3750 rpm
- Torque: 460-495 ft-lb (624-671 nm) @ 1500 rpm
- RPO code: LM2 (until 2024), LZ0 (2023-present)
- Intercooler: liquid-to-air
- Block: Aluminum
- Head: Aluminum
- Crankshaft: Forged Steel
- Rods: Forged
- Pistons: Hypereutetic cast aluminum alloy - LZ0 upgraded to steel pistons
- Cylinder liners: Iron
The engine's timing components are located at the rear of the engine, and feature timing chains to drive the camshafts and high pressure fuel pump, and a wet belt to drive the oil pump. This arrangement makes inspection and replacement very difficult and expensive. Archived at [https://ghostarchive.org/varchive/youtube/20211209/NFNsg7bCtdA Ghostarchive]{{cbignore}} and the [https://web.archive.org/web/20200719184044/https://www.youtube.com/watch?v=NFNsg7bCtdA Wayback Machine]{{cbignore}}: {{cite AV media| url = https://www.youtube.com/watch?v=NFNsg7bCtdA| title = What you don't know about the 3.0-liter Duramax diesel | website=YouTube}}{{cbignore}}
Most of the development and engineering work for the LM2 Duramax, as well as primary calibration took place in Turin, Italy.{{Cite web|url=https://www.gm-trucks.com/forums/topic/225182-just-do-it-2020-silverado-1500-30l-duramax-diesel/|title=Just do It! - 2020 Silverado 1500 3.0L Duramax Diesel}}{{cite web |last1=Gibbs |first1=Nick |title=GM's hopes for a diesel revival start in Turin |url=https://europe.autonews.com/article/20180623/COPY/306239996/gm-s-hopes-for-a-diesel-revival-start-in-turin |website=Automotive News Europe |accessdate=27 December 2019 |language=en |date=23 June 2018}} The engine is being produced at Flint Engine Operations.{{Cite web|url=https://media.gm.com/media/us/en/gm/company_info/facilities/powertrain/flint.html|title=GM Corporate Newsroom - United States - Company}} A test by Car and Driver showed 40 MPG is possible when hypermiling.{{Cite web|url=https://www.caranddriver.com/reviews/a28148602/2020-chevrolet-silverado-3-0l-diesel-drive/|title=2020 Chevy Silverado 1500 3.0L Duramax is Smoother Than it is Capable|date=10 December 2019}}
References
{{reflist}}
{{GM late engine timeline}}
{{DEFAULTSORT:Duramax 6}}
Category:General Motors engines