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{{about|the Duramax V8|the Duramax 6-cylinder|Isuzu 6H Engine}}
{{about|the Duramax V8|the Duramax 6-cylinder|Isuzu 6H engine}}
{{Infobox automobile engine
{{Infobox automobile engine
|name=Duramax Diesel engine
| name = Duramax Diesel engine
| image = 1.19.2011LML.jpg
|manufacturer=[[Duramax(engines)|Isuzu]]
| caption = Duramax LML
|production=2001–
| manufacturer = [[DMAX ISUZU (engines)|DMAX Ltd.]]
|class=[[Pushrod engine|OHV]] 90° [[V8]] [[Diesel]]
| production = 2001–present
|predecessor=[[Detroit Diesel V8 engine|6.2 and 6.5 L Detroit Diesel]]
| configuration = 90° [[V8 engine|V8]]
|similar=[[Ford Power Stroke engine|Power Stroke V8]]<br>[[Cummins B Series engine|B series I6]]
| predecessor = [[Detroit Diesel V8 engine|6.2 and 6.5&nbsp;L Detroit Diesel]]
| valvetrain = [[Overhead valve engine|OHV]] [[Multi-valve#Four valves|4 valves x cyl.]]
| fueltype = [[Diesel engine|Diesel]]
| fuelsystem = [[Common rail|High-pressure common-rail]] [[Direct fuel injection|direct injection]]
| coolingsystem = [[Radiator (engine cooling)|Water-cooled]]
| block = Cast [[gray iron]]
| head = Aluminum
| turbocharger = [[Garrett AiResearch|Garrett]] [[Variable-geometry turbocharger|variable-geometry]] vane with [[intercooler]]
| timing = Gears
| compression = 16.8:1, 17.5:1
| management = [[Robert Bosch GmbH|Bosch]]
| emissions control = Oxidizing [[Catalytic converter|catalyst]], [[Diesel particulate filter|DPF]], [[Exhaust gas recirculation|EGR]]
| emissions level = [[EPA]]
| displacement = {{convert|6599|cc|L cuin|1|order=flip|abbr=on}}
| bore = {{convert|103|mm|in|2|abbr=on|disp=flip}}<ref name=gmps-specs>{{cite web |url=https://poweredsolutions.gm.com/products/l5p-engine/ |title=6.6L V-8 L5P Features & Specifications |publisher= GM Powered Solutions |access-date=May 14, 2023}}</ref>
| stroke = {{convert|99|mm|in|2|abbr=on|disp=flip}}<ref name=gmps-specs/>
| idle =
| power = {{convert|250-550|hp|0|abbr=on}}
| torque = {{convert|460-1050|lbft|Nm|0|abbr=on}}
}}
}}
The '''Duramax''' is a [[General Motors Corporation|General Motors]] [[diesel engine]] family for light to medium duty trucks, designed by GM and [[Isuzu Motors|Isuzu]]. The 6.6-liter Duramax is produced by [[DMAX (engines)|DMAX]], a joint venture between GM and Isuzu in Moraine, Ohio. The Duramax block and heads are poured at The Defiance GM Powertrain foundry in Defiance, Ohio. This engine was initially installed in 2001 [[model year]] Chevy and GMC trucks and has been an option since then in pickups, vans, and medium-duty trucks. In 2006, production at Moraine was reportedly limited to approximately 200,000 engines per year.<ref name="millionth-duramax">{{cite web|url=http://www.prdomain.com/companies/G/GeneralMotors/newsreleases/20075940703.htm|title=GM celebrates one-millionth Duramax diesel|accessdate=May 9, 2007 }}</ref> On May 9, 2007, DMAX announced the production of the 1,000,000th Duramax V-8 diesel at its Moraine facility.<ref name="millionth-duramax" />
The '''Duramax V8 engine''' is a family of 6.6-liter [[Diesel engine|diesel]] [[V8 engine]]s produced by [[DMAX (engines)|DMAX]], a wholly owned subsidiary of General Motors in [[Moraine, Ohio]]. The Duramax block and heads are supplied from reliable vendors of General Motors.{{vague|date=May 2023}} This engine was initially installed in 2001 [[Chevrolet]] and [[GMC (automobile)|GMC]] trucks, and has since become an option in pickups, vans, and medium-duty trucks. In 2006, production at Moraine was reportedly limited to approximately 200,000 engines per year.<ref name="millionth-duramax">{{cite web|url=http://www.prdomain.com/companies/G/GeneralMotors/newsreleases/20075940703.htm|title=GM celebrates one-millionth Duramax diesel|access-date=May 9, 2007|url-status=dead|archive-url=https://web.archive.org/web/20070514010921/http://www.prdomain.com/companies/G/GeneralMotors/newsreleases/20075940703.htm|archive-date=May 14, 2007}}</ref> On May 9, 2007, DMAX announced the production of the 1,000,000th Duramax V8 at its Moraine facility,<ref name="millionth-duramax" /> followed by the 2,000,000th on March 24, 2017.<ref>{{Cite web|url=https://media.gm.com/media/us/en/gm/news.detail.html/content/Pages/news/us/en/2017/mar/0324-duramax.html|title = 2 Millionth Duramax Diesel Engine Rolls off the Line|date = 24 March 2017}}</ref>


==Engine RPO codes==
[[File:1.19.2011LML.jpg|thumb|Duramax LML]]


===LB7===
==Engine RPO Codes==
[[Regular Production Option|RPO]] LB7 (engine code "1") was first introduced in 2001 and continued until early 2004. It featured a 32-valve design with [[Common rail|high-pressure common-rail]] [[Direct fuel injection|direct injection]] and aluminum cylinder heads.<ref>{{Cite web|url=https://www.dieselhub.com/duramax/6.6-duramax-lb7.html|title=6.6L Duramax LB7|access-date=November 30, 2024}}</ref>


===LB7===
[[Regular Production Option|RPO]] LB7 (engine code "1") was first introduced in 2001 and continued until mid-2004. It is a 32-valve design with [[Common rail|high-pressure common-rail]] [[Direct fuel injection|direct injection]] and an experimental composite design cylinder head. The most common issue with the LB7 is injector failure, so common that a special policy bulletin was issued (#04039B). Fuel leaked and entered the crankcase, causing oil dilution. Early on, customers came forward complaining of severe overheating, and in some situations, blown head gaskets. Initially GM denied it was a problem, but after being sued by a consumer group, GM relented and included overheating and blown head gaskets as a warranted item. GM issued a warranty for this after the fact for injectors, which now have 7 year/200,000 mile coverage.{{citation needed|date=January 2013}}
The following trucks use the LB7:
The following trucks use the LB7:
* [[Chevrolet T-Series|Chevrolet Kodiak/GMC Topkick]]
*[[Chevrolet Kodiak|Chevrolet Kodiak/GMC TopKick]]
* [[Chevrolet Silverado]]/[[GMC Sierra]] HD
* [[Chevrolet Silverado]]/[[GMC Sierra]] HD


====Specifications====
====Specifications====
* Block / Head: Cast Iron / Aluminum
* Engine type: {{convert|6599|cc|cuin||abbr=on}} V8 turbo
* Bore x Stroke: {{convert|4.06|in|mm|0|abbr=on}} x {{convert|3.90|in|mm|0|abbr=on}}
* Block / Head: Iron / aluminum
* Aspiration: Turbocharged & Intercooled
* Valvetrain: OHV 4-V
* Compression: 17.5:1
* Compression: 17.5:1
* Injection: Direct; Robert Bosch GmbH high pressure common-rail
* Injection: Direct; [[Robert Bosch GmbH|Bosch]] high-pressure common-rail
* Power / Torque: {{convert|300|bhp|kW||abbr=on}} @ 3100 rpm / {{convert|520|lbft|Nm|0|abbr=on}} @1800 rpm
* Power / Torque: {{convert|300|hp|0|abbr=on}} at 3,100 rpm / {{convert|520|lb.ft|0|abbr=on}} at 1,800 rpm
The LLY was introduced in 2004 and completely replaced the LB7 mid-year.
* Source:<ref>[http://media.gm.com/division/2003_prodinfo/03_powertrain/03_truck_engine/index.html 2003 spec sheet]</ref>


===LLY===
===LLY===
The '''LLY''' (internally called the ''8GF1'') (engine code "2") is a {{convert|6599|cc|cuin||abbr=on}} [[Turbocharger|turbocharged]] engine which debuted in mid-2004 and continued until the end of 2005. It is a [[multi-valve|32-valve]] design with [[Common rail|high-pressure common-rail]] [[Direct fuel injection|direct injection]] and aluminum cylinder heads. The LLY was GM's first attempt to implement emissions requirements on their diesel trucks. To meet this goal they turned to a newly developed [[Garrett AiResearch|Garrett]] turbocharger with a variable geometry vane system and they installed an Exhaust Gas Recirculation valve or ([[EGR Valve]]). Learning from problems with injectors in the previous LB7 GM changed the valve covers to allow access to the injectors without having to remove the valve covers, saving significant labor costs if injector replacement became necessary.
The '''LLY''' (internally called the ''8GF1'') (engine code "2") is a {{convert|6599|cc|L cuin|1|order=flip|abbr=on}} [[Turbocharger|turbocharged]] engine which debuted in mid-2004 and continued until the end of 2005 (except the [[Hummer H1]] in 2006). It is a [[Multi-valve#Four valves|32-valve]] design with [[Common rail|high-pressure common-rail]] [[Direct fuel injection|direct injection]] and aluminum cylinder heads. The LLY was GM's first attempt to implement emissions requirements on their diesel trucks. To meet this goal, they turned to a newly developed [[Garrett AiResearch|Garrett]] turbocharger with a variable geometry vane system and installed an [[Exhaust gas recirculation|EGR valve]]. Learning from problems with injectors in the previous LB7, GM changed the valve covers to allow access to the injectors without having to remove the valve covers, saving significant labor costs if injector replacement became necessary.


The following trucks used the LLY engine:
The following trucks used the LLY engine:
* 2006 [[Hummer H1]] Alpha
* 2006-only [[Hummer H1]] Alpha
* [[Chevrolet Silverado]]/[[GMC Sierra]] HD
* [[Chevrolet Silverado]]/[[GMC Sierra]] 2500HD/3500


====Specifications====
====Specifications====
<ref name=2007LLYLBZ/>
* Engine type: {{convert|6599|cc|cuin||abbr=on}} V8 turbo
* Bore x Stroke: {{convert|4.06|in|mm|0|abbr=on}} x {{convert|3.90|in|mm|0|abbr=on}}
* Block / Head: Cast [[gray iron]] / Cast aluminum
* Block / Head: Cast [[gray iron]] / Cast aluminum
* Aspiration: Turbocharged & Intercooled
* Valvetrain: OHV 4-v
* Compression: 17.5:1
* Compression: 17.5:1
* Injection: [[Robert Bosch GmbH|Bosch]] High Pressure Common-rail
* Injection: Bosch high-pressure common-rail
* Power / Torque: {{convert|305|bhp|kW||abbr=on}} @3000 rpm / {{convert|605|lbft|Nm|0|abbr=on}} @1600 rpm
* Power / Torque: {{convert|310|bhp|kW|0|abbr=on}} at 3000 rpm / {{convert|605|lbft|Nm|0|abbr=on}} at 1600 rpm
* Head casting is 8gf1
* Head casting is 8GF1
* Block casting is #22351021213
* Block casting is #22351021213
* Source:<ref name=2007LLYLBZ/>


===LLY/LBZ===
===LLY/LBZ===
There are two [[VIN code]]s for the LBZ. The first is VIN 2 produced in late 2005 and early 2006. The VIN 2 engine is mechanically and physically the same as the VIN D engine but utilizes LLY engine tuning due to the LBZ tuning taking longer to be EPA certified and placed into production.
The '''LBZ''' (engine code "D") debuted in late 2006 and continued into 2007 sold only in the "classic" body style. It has an improved engine computer tune that produces increased power and torque over the 2005.5 LLY version of the motor. First appearance of the Duramax in the Express/Savanna vans.

The second is VIN D. This was introduced in 2006 and continued into 2007 sold only in the "classic" body style. It has an improved engine computer tune that produces increased power and torque over the 2005 LLY version of the engine. This also marked the first appearance of the Duramax in the Express/Savana vans. The LBZ is one of the more sought-after Duramax engines because of its strength, reliability, and being pre-emissions ([[Diesel particulate filter|DPF]] appeared on the next generation LMM in 2007).


Changes include:
Changes include:
* Cylinder block casting and machining changes strengthen the bottom of the cylinder bores to support increased power and torque
* Cylinder block casting and machining changes strengthen the bottom of the cylinder bores to support increased power and torque
* Upgraded main bearing material increases durability
* Upgraded main bearing material increases durability
* Revised piston design helps lower compression ratio to 16.8:1 from 17.5:1
* Revised piston design lowers compression ratio to 16.8:1 from 17.5:1
* Piston pin bore diameter increased for increased strength
* Piston pin bore diameter increased for added strength
* Connecting rod “ I ” section is thicker for increased strength
* Connecting rod "I" section is thicker for added strength
* Cylinder heads revised to accommodate lower compression and reduced cylinder firing pressure
* Cylinder heads revised to accommodate lower compression and reduced cylinder firing pressure
* Maximum injection pressure increased from {{convert|23000|psi|bar|1|abbr=on}} to more than {{convert|26000|psi|bar|1|abbr=on}}
* Maximum injection pressure increased from {{convert|23000|psi|bar|1|abbr=on}} to more than {{convert|26000|psi|bar|1|abbr=on}}
Line 68: Line 80:
* Air induction system re-tuned to enhance quietness
* Air induction system re-tuned to enhance quietness
* EGR has larger cooler to bring more exhaust into the system
* EGR has larger cooler to bring more exhaust into the system
* First application of new, 32-bit E35 controller, which adjusts and compensates for the fuel flow to bolster efficiency and reduce emissions"
* First application of new, 32-bit E35 controller, which adjusts and compensates for the fuel flow to bolster efficiency and reduce emissions


LBZ applications:
LBZ applications:


* [[Chevrolet Silverado]] HD
* [[Chevrolet Silverado]] 2500HD/3500
* [[Chevrolet Kodiak]]
* [[Chevrolet Kodiak]]
* [[GMC Sierra]] HD
* [[GMC Sierra]] 2500HD/3500
* [[GMC TopKick]]
* [[GMC TopKick]]
* Chevrolet Silverado/GMC Sierra 2500HD/3500 Classic

LLY applications:
LLY applications:
* [[Chevrolet Silverado]] HD
* [[Chevrolet Silverado]] 2500HD/3500
* [[Chevrolet Kodiak]]
* [[Chevrolet Kodiak]]
* [[GMC Sierra]] HD
* [[GMC Sierra]] 2500HD/3500
* [[Chevrolet Express]] full-size (reduced power output mated to a 4L85E transmission)
* [[Chevrolet Express]] full-size (reduced power output mated to a [[GM 4L80-E transmission#4L85-E|4L85E transmission]])
* [[GMC Savana]] full-size (reduced power output mated to a 4L85E transmission)
* [[GMC Savana]] full-size (reduced power output mated to a 4L85E transmission)


====Specifications====
====Specifications====
<ref name=2007LLYLBZ>[http://media.gm.com/us/powertrain/en/product_services/2007/Spec%20Sheet/Diesel/2007_LBZ_LLY_032406.xls 2007 LLY LBZ spec sheet]{{dead link|date=March 2018 |bot=InternetArchiveBot |fix-attempted=yes }}</ref>
* Engine type: {{convert|6599|cc|cuin||abbr=on}} V8 turbo
* Bore x Stroke: {{convert|4.06|in|mm|0|abbr=on}} x {{convert|3.90|in|mm|0|abbr=on}}
* Block / Head: Cast [[gray iron]] / Cast aluminum
* Block / Head: Cast [[gray iron]] / Cast aluminum
* Aspiration: Turbocharged & Intercooled
* Valvetrain: OHV 4-V
* Compression: 16.8:1
* Compression: 16.8:1
* Injection: [[Robert Bosch GmbH|Bosch]] High Pressure Common-rail
* Injection: Bosch high-pressure common-rail
* Power / Torque:
* Power / Torque: 360 bhp @3200 rpm / 650 lb-ft @1600 rpm


{| class="wikitable"
{| class="wikitable"
|-
|-
!Code!! Years!! Power@rpm !! Torque@rpm !!Redline (rpm)
!Code!! Years!! Power output !! Torque !!Redline
|-
|-
|LBZ (Chevrolet Silverado 2500HD / 3500 Classic (auto trans), GMC Sierra 2500HD / 3500 Classic (auto trans))||2006–2007||{{convert|360|bhp|kW||abbr=on}} @3200 ||{{convert|650|lbft|Nm|0|abbr=on}} @1600||3450
|LB7 (Chevrolet Silverado 2500HD / 3500 Classic (auto trans),<br/>GMC Sierra 2500HD / 3500 Classic (auto trans))||2001–2004||{{convert|300|bhp|kW|0|abbr=on}}<br/>@ 3200 rpm||{{convert|520|lbft|Nm|0|abbr=on}}<br/>@ 1600 rpm||3450 rpm
|-
|-
|LLY (Chevrolet Kodiak Medium Duty (LRX option), GMC TopKick Medium Duty (LRX option), Hummer H1 Alpha)||2004–2005||{{convert|300|bhp|kW||abbr=on}} @3000 ||{{convert|520|lbft|Nm|0|abbr=on}} @1600||3200
|LLY (Chevrolet Kodiak Medium Duty (LRX option),<br/>GMC TopKick Medium Duty (LRX option),<br/>Hummer H1 Alpha)||2004–2005||rowspan=2|{{convert|310|bhp|kW|0|abbr=on}}<br/>@ 3000 rpm||{{convert|605|lbft|Nm|0|abbr=on}}<br/>@ 1600 rpm||rowspan=2|3200 rpm
|-
|-
|LBZ(Chevrolet Kodiak Medium Duty (LPD option), GMC TopKick Medium Duty (LPD))||2006–2007||{{convert|300|bhp|kW||abbr=on}} @3000 ||{{convert|605|lbft|Nm|0|abbr=on}} @1600||3200
|LBZ(Chevrolet Kodiak Medium Duty (LPD option),<br/>GMC TopKick Medium Duty (LPD))||rowspan=2|2006–2007||{{convert|605|lbft|Nm|0|abbr=on}}<br/>@ 1600 rpm
|-
|-
|LLY (Chevrolet Express, GMC Savana)||2006–2007||{{convert|250|bhp|kW||abbr=on}} @3200 ||{{convert|460|lbft|Nm|0|abbr=on}} @1600||3450
|LLY (Chevrolet Express, GMC Savana)||{{convert|250|bhp|kW|0|abbr=on}}<br/>@ 3200 rpm||{{convert|460|lbft|Nm|0|abbr=on}}<br/>@ 1600 rpm||3450 rpm
|}
|}
* Source:<ref name=2007LLYLBZ>[http://media.gm.com/us/powertrain/en/product_services/2007/Spec%20Sheet/Diesel/2007_LBZ_LLY_032406.xls 2007 LLY LBZ spec sheet]</ref>


===LMM===
===LMM===
[[File:Allison 1000 attached to Duramax 6.6 Diesel.JPG|thumb|Allison 1000 attached to Duramax 6.6 Diesel]]
The LMM (engine code "6") debuted part way through 2007 and ended production with the start of the 2011 calendar year and is mated to the 6-speed Allison transmission. The LMM was the only Duramax offered for model years 2008-2010.<ref>{{cite web|author=|url=http://www.duramaxdieselspecs.com/duramax_vin.html |title=Duramax VIN Engine Identification |publisher=DuramaxDieselSpecs.com |date= |accessdate=2012-03-14}}</ref>
The LMM (engine code "6") debuted part way through 2007 and ended production with the start of the 2011 calendar year and is mated to the 6-speed [[Allison Transmission|Allison transmission]]. The LMM was the only Duramax offered for model years 2007–2010.<ref>{{cite web|url=http://www.duramaxdieselspecs.com/duramax_vin.html |last=DuramaxHub |title=Duramax Engine Identification: Duramax Engine ID by VIN number |date= 2016 |access-date=14 December 2016}}</ref> A version was used in the [[Trident (car company)|Trident]] Iceni.<ref>{{cite web|url=http://www.autoblog.com/2008/08/20/trident-diesel-sports-car-not-vaporware-still-sounds-too-good-t/ |last=Korzeniewski |first=Jeremy |title=Trident diesel sports car not vaporware, still sounds too good to be true |date=20 August 2008 |website=Autoblog |access-date=14 December 2016}}</ref>

A version was used in Trident Iceni.<ref>{{cite web|author= Jeremy Korzeniewski RSS feed |url=http://www.autoblog.com/2008/08/20/trident-diesel-sports-car-not-vaporware-still-sounds-too-good-t/ |title=Trident diesel sports car not vaporware, still sounds too good to be true |publisher=Autoblog.com |date= |accessdate=2011-12-02}}</ref>


====Specifications====
====Specifications====
<ref name=2007LMMspecs>{{cite web|url=http://archives.media.gm.com/us/chevrolet/en/product_services/r_trucks/r_c_silverado/07silveradoPK/07_Chevy_SilveradoHD_3500.html |last=GM Media |title=2007 Chevrolet Silverado 3500HD Specifications |access-date=14 December 2016}}</ref><ref>[http://media.gm.com/us/powertrain/en/product_services/2009/HPT%20Library/Diesel/2009_66L_LMM_SierraHDf.pdf 2009 GMC Sierra HD engine curve]{{dead link|date=March 2018 |bot=InternetArchiveBot |fix-attempted=yes }}</ref>
* Engine type: {{convert|6599|cc|cuin||abbr=on}} V8 turbo
* Bore x Stroke: {{convert|4.06|in|mm|0|abbr=on}} x {{convert|3.90|in|mm|0|abbr=on}}
* Block / Head: Cast [[gray iron]] / Cast aluminum
* Block / Head: Cast [[gray iron]] / Cast aluminum
* Aspiration: Turbocharged & Intercooled
* Valvetrain: OHV 4-V
* Compression: 16.8:1
* Compression: 16.8:1
* Injection: [[Robert Bosch GmbH|Bosch]] High Pressure Common Rail with CP3.3 Injection Pump
* Injection: Bosch high-pressure common-rail with CP3.3 injection pump
* Power / Torque: {{convert|365|bhp|kW||abbr=on}} @3200 rpm / {{convert|660|lbft|Nm|0|abbr=on}} @1600 rpm
* Power / Torque: {{convert|365|bhp|kW|0|abbr=on}} at 3200 rpm / {{convert|660|lbft|Nm|0|abbr=on}} at 1600 rpm


{| class="wikitable"
{| class="wikitable"
|-
|-
!Code!! Years!! Power@rpm !! Torque@rpm !!Redline (rpm)
!Code!! Years!! Power output !! Torque !!Redline
|-
|-
|LML (Chevrolet Silverado HD, GMC Sierra HD)||2011–2014||{{convert|397|bhp|kW||abbr=on}} @3000 ||{{convert|765|lbft|Nm|0|abbr=on}} @1600||3450
|LML (Chevrolet Silverado/GMC Sierra HD)||2011–2016||{{convert|397|bhp|kW|0|abbr=on}}<br/>@ 3000 rpm||{{convert|765|lbft|Nm|0|abbr=on}}<br/>@ 1600 rpm||rowspan=2|3450 rpm
|-
|-
|LMM (Chevrolet Silverado HD, GMC Sierra HD)||2007–2010||{{convert|365|bhp|kW||abbr=on}} @3200 ||{{convert|660|lbft|Nm|0|abbr=on}} @1600||3450
|LMM (Chevrolet Silverado/GMC Sierra HD)|| rowspan="4" |2007–2010||{{convert|365|bhp|kW|0|abbr=on}}<br/>@ 3200 rpm||{{convert|660|lbft|Nm|0|abbr=on}}<br/>@ 1600 rpm
|-
|-
|LMM (Chevrolet Kodiak Medium Duty (LYE option), GMC TopKick Medium Duty (LYE option))||2007–2010||{{convert|330|bhp|kW||abbr=on}} @3000 ||{{convert|620|lbft|Nm|0|abbr=on}} @1600||3250
|LMM (Chevrolet Kodiak/GMC TopKick (LYE option))||{{convert|330|bhp|kW|0|abbr=on}}<br/>@ 3000 rpm||{{convert|620|lbft|Nm|0|abbr=on}}<br/>@ 1600 rpm||rowspan=2|3250 rpm
|-
|-
|LMM (Chevrolet Kodiak Medium Duty (LRX option), GMC TopKick Medium Duty (LRX option))||2007–2010||{{convert|300|bhp|kW||abbr=on}} @3000 ||{{convert|520|lbft|Nm|0|abbr=on}} @1600||3250
|LMM (Chevrolet Kodiak/GMC TopKick (LRX option))||{{convert|300|bhp|kW|0|abbr=on}}<br/>@ 3000 rpm||{{convert|520|lbft|Nm|0|abbr=on}}<br/>@ 1600 rpm
|-
|-
|LMM (Chevrolet Express, GMC Savana)||2007–2010||{{convert|250|bhp|kW||abbr=on}} @3200 ||{{convert|460|lbft|Nm|0|abbr=on}} @1600||3450
|LMM (Chevrolet Express/GMC Savana)||{{convert|250|bhp|kW|0|abbr=on}}<br/>@ 3200 rpm||{{convert|460|lbft|Nm|0|abbr=on}}<br/>@ 1600 rpm||rowspan=2|3450 rpm
|-
|-
|LMM (Chevrolet Express, GMC Savana)||2011-2014||{{convert|260|bhp|kW|abbr=on}} @3100 ||{{convert|525|lbft|Nm|0|abbr=on}} @1600||3450
|LGH (Chevrolet Express/GMC Savana)
|2010–2016||{{convert|260|bhp|kW|0|abbr=on}}<br/>@ 3100 rpm||{{convert|525|lbft|Nm|0|abbr=on}}<br/>@ 1600 rpm
|}
|}
* Source:<ref name=2007LMMspecs>{{cite web|url=http://archives.media.gm.com/us/chevrolet/en/product_services/r_trucks/r_c_silverado/07silveradoPK/07_Chevy_SilveradoHD_3500.html |title=2007 LMM specs |publisher=Archives.media.gm.com |date=2005-03-31 |accessdate=2011-12-02}}</ref><ref>[http://media.gm.com/us/powertrain/en/product_services/2009/HPT%20Library/Diesel/2009_66L_LMM_SierraHDf.pdf 2009 GMC Sierra HD engine curve]</ref>


Emission controls:
Emission controls:
* Additional combustion control, including an even more efficient variable-geometry turbocharging system, cooled (enhanced) [[exhaust gas recirculation]] (EGR) and closed crankcase ventilation to reduce [[nitrogen oxide]]s (NOx)
* Additional combustion control, including an even more efficient variable-geometry turbocharging system, cooled (enhanced) [[exhaust gas recirculation]] (EGR), and closed crankcase ventilation to reduce [[nitrogen oxide]]s (NOx)
* Additional exhaust control, including oxidizing catalyst and new [[diesel particulate filter]] (DPF) to reduce soot and [[particulate]] matter
* Additional exhaust control, including oxidizing catalyst and new [[diesel particulate filter]] (DPF) to reduce soot and [[particulate]] matter
* Increased-capacity cooling system
* Increased-capacity cooling system
Line 149: Line 153:


Applications:
Applications:
* 2007- [[Chevrolet Silverado]] HD<ref>[http://media.gm.com/us/gm/en/news/press_kits/07%20fs%20pickups/hd/index.html 2007 CHEVROLET SILVERADO AND GMC SIERRA HEAVY-DUTY PICKUPS DELIVER THE CAPABILITY FOR ANY TASK]</ref>
* 2007–2010 [[Chevrolet Silverado]] HD<ref>[http://media.gm.com/us/gm/en/news/press_kits/07%20fs%20pickups/hd/index.html 2007 CHEVROLET SILVERADO AND GMC SIERRA HEAVY-DUTY PICKUPS DELIVER THE CAPABILITY FOR ANY TASK] {{webarchive|url=https://archive.today/20070303113107/http://media.gm.com/us/gm/en/news/press_kits/07%20fs%20pickups/hd/index.html |date=2007-03-03 }}</ref>
* 2007- [[GMC Sierra]] HD
* 2007–2010 [[GMC Sierra]] HD
* [[Chevrolet Kodiak]]
* 2007–2010 [[Chevrolet Kodiak]]
* [[GMC Topkick]]
* 2007–2010 [[GMC Topkick|GMC TopKick]]
* [[Chevrolet Express]]/GMC Savanna
* 2007–2010 [[Chevrolet Express]]/GMC Savana


===LMK===
===LGH===
The 6.6L Duramax diesel engine (VIN code "L") is used on 2010 interim and 2011 Chevrolet Express and GMC Savana vans and 2011 Chevrolet Silverado/GMC Sierra HD trucks with RPO ZW9 (chassis cabs or trucks with pickup box delete). The LGH engine is rated at {{convert|335|bhp|kW|0|abbr=on}} at 3,100 rpm and {{convert|685|lbft|Nm|0|abbr=on}} at 1,600 rpm. Similar to the LML, this engine also uses a DPF and DEF system to meet emissions standards.
This engine is not yet commercially launched although it was touted in the automobile press as one of the most important new engine concepts for small trucks and SUVs by finally delivering a capable diesel engine in a compact enough package. The engine project is currently on indefinite hold by GM. General Motors planned a 4.5-litre 72-degree<ref>{{cite web|title=2010 Duramax 4500 Diesel|url=http://www.dieselpowermag.com/tech/chevy/0810dp_2010_duramax_4500_diesel/viewall.html}}</ref> V8 for light-duty applications which would be built at GM's powertrain facility in [[Tonawanda (town), New York|Tonawanda, New York]] after 2009. Designed to fit in the same space as a [[Chevrolet Small-Block engine]], it is expected to produce over {{convert|310|bhp|kW||abbr=on}} and {{convert|520|lbft|Nm|0|abbr=on}} of torque. It added urea injection, 29,000-psi (2,000 bar) piezo-electric common-rail fuel system over previous Duramax architecture.<ref>{{cite web|author= John Neff RSS feed |url=http://www.autoblog.com/2008/05/05/gm-releases-details-on-upcoming-4-5l-duramax-turbo-diesel-v8/ |title=GM releases details on upcoming 4.5L Duramax turbo-diesel V8 |publisher=Autoblog.com |date= |accessdate=2011-12-02}}</ref>


===LML===
It was initially targeted for the Chevy Silverado/GMC Sierra and [[Hummer H2]].<ref name="autoblog4.5">{{cite web|first=John|last=Neff|work=Autoblog|title=GM announces new 4.5L V8 Duramax diesel for half-ton trucks and HUMMER poopH2|url=http://www.autoblog.com/2007/06/15/gm-announces-clean-diesel-v8-for-pickups-and-the-hummer-h2/|date=2007-06-15|accessdate=2007-06-21}}</ref>
The 6.6L RPO LML (VIN code "8") is the 2011–2016 version of the Isuzu/GM Duramax V8 diesel engine. It is a further advanced version of the LMM engine with the majority of the changes addressing a required drastic reduction in engine emissions. Some mechanical aspects of the engine, such as piston oil flow design for improved temperature control and oil pump design, were also improved to enhance durability even further.
Unlike previous Duramax engines, the 4.5-liter is planned to be designed and built entirely by GM, without assistance from Isuzu.<ref name="pickuptruck4.5">{{cite web|first=Mike|last=Levine|title=GM Announces Production of New 4.5-Liter Duramax Diesel V8 for Light Duty Pickups|url=http://www.pickuptruck.com/html/news/gm/fullsize/newdieselsfromgm.html|date=2007-06-15|work=PickupTruck.com|accessdate=2007-06-21}}</ref>


The LML engine was significantly updated for 2011 to comply with the new federal emissions standards for diesel engines, provide better engine rigidity, and further noise reduction. The engine gained new 29,000 PSI piezo injectors as well as a completely reworked fuel system which was now powered by the Bosch CP4 pump, that also now supports up to 20% [[biodiesel]] mixtures and a urea injection (to reduce nitrogen oxides) with a 5.3 gallon [[Diesel exhaust fluid|DEF]] tank. This engine has a fuel injector in the exhaust tract, to allow raw fuel injection during the particulate filter recycling routine. The RPO LML engine is rated at {{convert|397|hp|0|abbr=on}} at 3,000 rpm and {{Convert|765|lbft|Nm|0|abbr=on}} of torque at 1,600 rpm.<ref>{{cite web|url=http://media.gm.com/content/media/us/en/news/news_detail.brand_gm.html/content/Pages/news/us/en/2010/Mar/0310_gmc_sierra_hd/0310_duramax|title=GMC's 2011 Heavy-Duty Trucks Build On Proven Strong Heritage With New Duramax 6.6L Turbo Diesel Engines|date=10 March 2010|author=General Motors}}</ref>
As of March 2009, a GM spokesperson stated the engine project has been put on an "indefinite hold" due to current economic conditions.<ref>{{cite web|url=http://www.chevroletreports.com/blog/1019392_chevy-puts-baby-duramax-on-hold-until-further-notice|title=Chevy Puts Baby Duramax On Hold Until Further Notice|date=11 March 2009|author=Colin Mathews}}</ref>


===LML===
===L5P===
The L5P Duramax is the latest version of the Duramax V8 diesel engine.(engine code Y). Introduced in the 2017 model year, it was the most powerful diesel engine GM had produced, with {{convert|445|hp|0|abbr=on}} at 2,800 rpm and {{convert|910|lbft|Nm|0|abbr=on}} at 1,600 rpm. Design specification performance can exceed {{convert|550|bhp|0|abbr=on}} at 3,050 rpm and {{convert|1050|lbft|Nm|0|abbr=on}} at 1,975 rpm.
The 6.6L RPO LML (VIN code "8") is the latest version (2011–present) of the Isuzu/GM Duramax V8 diesel engine and actually a further advanced version of the LMM engine with the majority of the changes addressing a required drastic reduction in engine emissions. Some mechanical aspects of the engine, such as piston oil flow design for improved temperature control and oil pump design, were also improved to enhance durability even further.


===L5P Gen2===
The LML engine was significantly updated for 2011 to provide improved exhaust emissions that comply with the new federal emission standards for diesel engines, provide better engine rigidity and further noise reduction. New 29,000 PSI piezo injectors, a complete fuel system-hardening to tolerate up to 20% [[biodiesel]] mixtures and [[urea]] injection (to reduce Nitrogen oxides) with a 5.3 gallon urea tank are updating the fuel and emissions systems. This engine has a fuel injector in the exhaust tract, to allow raw fuel injection during the particulate filter recycling routine. The RPO LML engine is rated at {{convert|397|hp}} at 3000 rpm and {{Convert|765|lbft|Nm|abbr=on}} of torque at 1600 rpm.<ref>{{cite web|url=http://media.gm.com/content/media/us/en/news/news_detail.brand_gm.html/content/Pages/news/us/en/2010/Mar/0310_gmc_sierra_hd/0310_duramax|title=GMC's 2011 Heavy-Duty Trucks Build On Proven Strong Heritage With New Duramax 6.6L Turbo Diesel Engines|date=10 March 2010|author=General Motors}}</ref>
The L5P Duramax received an increase in horsepower and torque for the 2024 model year; {{convert|470|hp|0|abbr=on}} at 2,800 rpm and {{convert|975|lbft|Nm|0|abbr=on}} at 1,600 rpm. Design specification performance can exceed {{convert|550|bhp|0|abbr=on}} at 3050 rpm and {{convert|1050|lbft|Nm|0|abbr=on}} at 1975 rpm.<ref>{{cite web |title=GM Authority |url=https://gmauthority.com/blog/gm/gm-engines/l5p/ |website=GM Engines}}</ref>


===LGH===
===L5D===
The 6.6L Duramax diesel engine (VIN code "L") is used on 2010 interim and 2011 Chevrolet Express and GMC Savana vans and 2011 Chevrolet Silverado and GMC Sierra trucks with RPO ZW9 (chassis cabs or trucks with pickup box delete). The LGH engine is rated at {{convert|335|bhp|kW||abbr=on}} at 3100 rpm and {{convert|685|lbft|Nm|0|abbr=on}} at 1600 rpm. Similar to the LML this engine also uses a DPF and DEF system to meet emission standards.
The L5D Duramax is a downrated version of the L5P for the Chevrolet Silverado MD and International CV trucks (Class 4, 5, and 6). The L5D was downrated to increase reliability and reduce downtime. The L5D was introduced in 2018 for the 2019 Chevrolet Silverado MD and International CV trucks. Specifications for the L5D are {{convert|350|hp|0|abbr=on}} at 2,600 rpm and {{convert|700|lbft|Nm|0|abbr=on}} at 1,600 rpm.

==See also==
{{commons category|Duramax engines}}
* [[List of GM engines]]
* [[Allison 1000 transmission]]


==References==
==References==
Line 180: Line 180:


==External links==
==External links==
{{commons cat}}
* [http://www.gm.com/automotive/gmpowertrain/engines/duramax GM Powertrain]
* [https://defdeletekits.com/lml-duramax-delete-kit/ LML DURAMAX]
* [http://www.duramaxdiesel.com Duramax home page]
* [https://web.archive.org/web/20050301083358/http://www.duramaxdiesel.com/ Duramax home page]
* [http://www.dmaxengines.com DMAX, Ltd. home page]
* [http://www.dmaxengines.com DMAX, Ltd. home page]
* [http://www.duramaxdieselspecs.com Duramax Diesel Specs]
* [http://www.duramaxdieselspecs.com Duramax Diesel Specs]
* [http://www.duramaxhub.com/duramax-timeline.html Duramax timeline]
* [https://generators-advicer.com/who-makes-duromax-generator-engines/ Who Makes Duromax Generator Engines - generators-advicer]

{{GM late engine timeline}}


{{DEFAULTSORT:Duramax V8 Engine}}
{{DEFAULTSORT:Duramax V8 Engine}}
[[Category:DMAX engines]]
[[Category:DMAX engines]]
[[Category:Diesel engines by model]]
[[Category:Diesel engines by model]]
[[Category:V8 engines]]

Latest revision as of 20:39, 30 November 2024

This article is about the Duramax V8. For the Duramax 6-cylinder, see Isuzu 6H engine.
Duramax Diesel engine
Duramax LML
Overview
ManufacturerDMAX Ltd.
Production2001–present
Layout
Configuration90° V8
Displacement6.6 L; 402.7 cu in (6,599 cc)
Cylinder bore4.06 in (103 mm)[1]
Piston stroke3.90 in (99 mm)[1]
Cylinder block materialCast gray iron
Cylinder head materialAluminum
ValvetrainOHV 4 valves x cyl.
Valvetrain drive systemGears
Compression ratio16.8:1, 17.5:1
Combustion
TurbochargerGarrett variable-geometry vane with intercooler
Fuel systemHigh-pressure common-rail direct injection
ManagementBosch
Fuel typeDiesel
Cooling systemWater-cooled
Output
Power output250–550 hp (186–410 kW)
Torque output460–1,050 lb⋅ft (624–1,424 N⋅m)
Emissions
Emissions target standardEPA
Emissions control systemsOxidizing catalyst, DPF, EGR
Chronology
Predecessor6.2 and 6.5 L Detroit Diesel

The Duramax V8 engine is a family of 6.6-liter diesel V8 engines produced by DMAX, a wholly owned subsidiary of General Motors in Moraine, Ohio. The Duramax block and heads are supplied from reliable vendors of General Motors.[vague] This engine was initially installed in 2001 Chevrolet and GMC trucks, and has since become an option in pickups, vans, and medium-duty trucks. In 2006, production at Moraine was reportedly limited to approximately 200,000 engines per year.[2] On May 9, 2007, DMAX announced the production of the 1,000,000th Duramax V8 at its Moraine facility,[2] followed by the 2,000,000th on March 24, 2017.[3]

Engine RPO codes

[edit]

LB7

[edit]

RPO LB7 (engine code "1") was first introduced in 2001 and continued until early 2004. It featured a 32-valve design with high-pressure common-rail direct injection and aluminum cylinder heads.[4]

The following trucks use the LB7:

Specifications

[edit]
  • Block / Head: Cast Iron / Aluminum
  • Compression: 17.5:1
  • Injection: Direct; Bosch high-pressure common-rail
  • Power / Torque: 300 hp (224 kW) at 3,100 rpm / 520 lb⋅ft (705 N⋅m) at 1,800 rpm

The LLY was introduced in 2004 and completely replaced the LB7 mid-year.

LLY

[edit]

The LLY (internally called the 8GF1) (engine code "2") is a 6.6 L; 402.7 cu in (6,599 cc) turbocharged engine which debuted in mid-2004 and continued until the end of 2005 (except the Hummer H1 in 2006). It is a 32-valve design with high-pressure common-rail direct injection and aluminum cylinder heads. The LLY was GM's first attempt to implement emissions requirements on their diesel trucks. To meet this goal, they turned to a newly developed Garrett turbocharger with a variable geometry vane system and installed an EGR valve. Learning from problems with injectors in the previous LB7, GM changed the valve covers to allow access to the injectors without having to remove the valve covers, saving significant labor costs if injector replacement became necessary.

The following trucks used the LLY engine:

Specifications

[edit]

[5]

  • Block / Head: Cast gray iron / Cast aluminum
  • Compression: 17.5:1
  • Injection: Bosch high-pressure common-rail
  • Power / Torque: 310 bhp (231 kW) at 3000 rpm / 605 lb⋅ft (820 N⋅m) at 1600 rpm
  • Head casting is 8GF1
  • Block casting is #22351021213

LLY/LBZ

[edit]

There are two VIN codes for the LBZ. The first is VIN 2 produced in late 2005 and early 2006. The VIN 2 engine is mechanically and physically the same as the VIN D engine but utilizes LLY engine tuning due to the LBZ tuning taking longer to be EPA certified and placed into production.

The second is VIN D. This was introduced in 2006 and continued into 2007 sold only in the "classic" body style. It has an improved engine computer tune that produces increased power and torque over the 2005 LLY version of the engine. This also marked the first appearance of the Duramax in the Express/Savana vans. The LBZ is one of the more sought-after Duramax engines because of its strength, reliability, and being pre-emissions (DPF appeared on the next generation LMM in 2007).

Changes include:

  • Cylinder block casting and machining changes strengthen the bottom of the cylinder bores to support increased power and torque
  • Upgraded main bearing material increases durability
  • Revised piston design lowers compression ratio to 16.8:1 from 17.5:1
  • Piston pin bore diameter increased for added strength
  • Connecting rod "I" section is thicker for added strength
  • Cylinder heads revised to accommodate lower compression and reduced cylinder firing pressure
  • Maximum injection pressure increased from 23,000 psi (1,585.8 bar) to more than 26,000 psi (1,792.6 bar)
  • Fuel delivered via higher-pressure pump, fuel rails, distribution lines and all-new, seven-hole fuel injectors
  • Fuel injectors spray directly onto glow plugs, providing faster, better-quality starts and more complete cold-start combustion for reduced emissions
  • Improved glow plugs heat up faster through an independent controller
  • Revised variable-geometry turbocharger is aerodynamically more efficient to help deliver smooth and immediate response and lower emissions
  • Air induction system re-tuned to enhance quietness
  • EGR has larger cooler to bring more exhaust into the system
  • First application of new, 32-bit E35 controller, which adjusts and compensates for the fuel flow to bolster efficiency and reduce emissions

LBZ applications:

LLY applications:

Specifications

[edit]

[5]

  • Block / Head: Cast gray iron / Cast aluminum
  • Compression: 16.8:1
  • Injection: Bosch high-pressure common-rail
  • Power / Torque: 360 bhp @3200 rpm / 650 lb-ft @1600 rpm
Code Years Power output Torque Redline
LB7 (Chevrolet Silverado 2500HD / 3500 Classic (auto trans),
GMC Sierra 2500HD / 3500 Classic (auto trans))		 2001–2004 300 bhp (224 kW)
@ 3200 rpm		 520 lb⋅ft (705 N⋅m)
@ 1600 rpm		 3450 rpm
LLY (Chevrolet Kodiak Medium Duty (LRX option),
GMC TopKick Medium Duty (LRX option),
Hummer H1 Alpha)		 2004–2005 310 bhp (231 kW)
@ 3000 rpm		 605 lb⋅ft (820 N⋅m)
@ 1600 rpm		 3200 rpm
LBZ(Chevrolet Kodiak Medium Duty (LPD option),
GMC TopKick Medium Duty (LPD))		 2006–2007 605 lb⋅ft (820 N⋅m)
@ 1600 rpm
LLY (Chevrolet Express, GMC Savana) 250 bhp (186 kW)
@ 3200 rpm		 460 lb⋅ft (624 N⋅m)
@ 1600 rpm		 3450 rpm

LMM

[edit]
Allison 1000 attached to Duramax 6.6 Diesel

The LMM (engine code "6") debuted part way through 2007 and ended production with the start of the 2011 calendar year and is mated to the 6-speed Allison transmission. The LMM was the only Duramax offered for model years 2007–2010.[6] A version was used in the Trident Iceni.[7]

Specifications

[edit]

[8][9]

  • Block / Head: Cast gray iron / Cast aluminum
  • Compression: 16.8:1
  • Injection: Bosch high-pressure common-rail with CP3.3 injection pump
  • Power / Torque: 365 bhp (272 kW) at 3200 rpm / 660 lb⋅ft (895 N⋅m) at 1600 rpm
Code Years Power output Torque Redline
LML (Chevrolet Silverado/GMC Sierra HD) 2011–2016 397 bhp (296 kW)
@ 3000 rpm		 765 lb⋅ft (1,037 N⋅m)
@ 1600 rpm		 3450 rpm
LMM (Chevrolet Silverado/GMC Sierra HD) 2007–2010 365 bhp (272 kW)
@ 3200 rpm		 660 lb⋅ft (895 N⋅m)
@ 1600 rpm
LMM (Chevrolet Kodiak/GMC TopKick (LYE option)) 330 bhp (246 kW)
@ 3000 rpm		 620 lb⋅ft (841 N⋅m)
@ 1600 rpm		 3250 rpm
LMM (Chevrolet Kodiak/GMC TopKick (LRX option)) 300 bhp (224 kW)
@ 3000 rpm		 520 lb⋅ft (705 N⋅m)
@ 1600 rpm
LMM (Chevrolet Express/GMC Savana) 250 bhp (186 kW)
@ 3200 rpm		 460 lb⋅ft (624 N⋅m)
@ 1600 rpm		 3450 rpm
LGH (Chevrolet Express/GMC Savana) 2010–2016 260 bhp (194 kW)
@ 3100 rpm		 525 lb⋅ft (712 N⋅m)
@ 1600 rpm

Emission controls:

  • Additional combustion control, including an even more efficient variable-geometry turbocharging system, cooled (enhanced) exhaust gas recirculation (EGR), and closed crankcase ventilation to reduce nitrogen oxides (NOx)
  • Additional exhaust control, including oxidizing catalyst and new diesel particulate filter (DPF) to reduce soot and particulate matter
  • Increased-capacity cooling system
  • New engine control software
  • Use of low-ash engine oil (CJ-4)

Applications:

LGH

[edit]

The 6.6L Duramax diesel engine (VIN code "L") is used on 2010 interim and 2011 Chevrolet Express and GMC Savana vans and 2011 Chevrolet Silverado/GMC Sierra HD trucks with RPO ZW9 (chassis cabs or trucks with pickup box delete). The LGH engine is rated at 335 bhp (250 kW) at 3,100 rpm and 685 lb⋅ft (929 N⋅m) at 1,600 rpm. Similar to the LML, this engine also uses a DPF and DEF system to meet emissions standards.

LML

[edit]

The 6.6L RPO LML (VIN code "8") is the 2011–2016 version of the Isuzu/GM Duramax V8 diesel engine. It is a further advanced version of the LMM engine with the majority of the changes addressing a required drastic reduction in engine emissions. Some mechanical aspects of the engine, such as piston oil flow design for improved temperature control and oil pump design, were also improved to enhance durability even further.

The LML engine was significantly updated for 2011 to comply with the new federal emissions standards for diesel engines, provide better engine rigidity, and further noise reduction. The engine gained new 29,000 PSI piezo injectors as well as a completely reworked fuel system which was now powered by the Bosch CP4 pump, that also now supports up to 20% biodiesel mixtures and a urea injection (to reduce nitrogen oxides) with a 5.3 gallon DEF tank. This engine has a fuel injector in the exhaust tract, to allow raw fuel injection during the particulate filter recycling routine. The RPO LML engine is rated at 397 hp (296 kW) at 3,000 rpm and 765 lb⋅ft (1,037 N⋅m) of torque at 1,600 rpm.[11]

L5P

[edit]

The L5P Duramax is the latest version of the Duramax V8 diesel engine.(engine code Y). Introduced in the 2017 model year, it was the most powerful diesel engine GM had produced, with 445 hp (332 kW) at 2,800 rpm and 910 lb⋅ft (1,234 N⋅m) at 1,600 rpm. Design specification performance can exceed 550 bhp (410 kW) at 3,050 rpm and 1,050 lb⋅ft (1,424 N⋅m) at 1,975 rpm.

L5P Gen2

[edit]

The L5P Duramax received an increase in horsepower and torque for the 2024 model year; 470 hp (350 kW) at 2,800 rpm and 975 lb⋅ft (1,322 N⋅m) at 1,600 rpm. Design specification performance can exceed 550 bhp (410 kW) at 3050 rpm and 1,050 lb⋅ft (1,424 N⋅m) at 1975 rpm.[12]

L5D

[edit]

The L5D Duramax is a downrated version of the L5P for the Chevrolet Silverado MD and International CV trucks (Class 4, 5, and 6). The L5D was downrated to increase reliability and reduce downtime. The L5D was introduced in 2018 for the 2019 Chevrolet Silverado MD and International CV trucks. Specifications for the L5D are 350 hp (261 kW) at 2,600 rpm and 700 lb⋅ft (949 N⋅m) at 1,600 rpm.

References

[edit]
  1. ^ a b "6.6L V-8 L5P Features & Specifications". GM Powered Solutions. Retrieved May 14, 2023.
  2. ^ a b "GM celebrates one-millionth Duramax diesel". Archived from the original on May 14, 2007. Retrieved May 9, 2007.
  3. ^ "2 Millionth Duramax Diesel Engine Rolls off the Line". 24 March 2017.
  4. ^ "6.6L Duramax LB7". Retrieved November 30, 2024.
  5. ^ a b 2007 LLY LBZ spec sheet[permanent dead link‍]
  6. ^ DuramaxHub (2016). "Duramax Engine Identification: Duramax Engine ID by VIN number". Retrieved 14 December 2016.
  7. ^ Korzeniewski, Jeremy (20 August 2008). "Trident diesel sports car not vaporware, still sounds too good to be true". Autoblog. Retrieved 14 December 2016.
  8. ^ GM Media. "2007 Chevrolet Silverado 3500HD Specifications". Retrieved 14 December 2016.
  9. ^ 2009 GMC Sierra HD engine curve[permanent dead link‍]
  10. ^ 2007 CHEVROLET SILVERADO AND GMC SIERRA HEAVY-DUTY PICKUPS DELIVER THE CAPABILITY FOR ANY TASK Archived 2007-03-03 at archive.today
  11. ^ General Motors (10 March 2010). "GMC's 2011 Heavy-Duty Trucks Build On Proven Strong Heritage With New Duramax 6.6L Turbo Diesel Engines".
  12. ^ "GM Authority". GM Engines.
[edit]
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