What are the Duramax engine specs?
For a full breakdown of the 6.6L L5P Duramax specs that make these engines so capable, see the chart below. In 2017, the 6.6L V-8 L5P Duramax Diesel engine is introduced on Chevy HD and GMC HD trucks. The new L5P is the most capable Duramax thus far offering 445 horsepower @2,800 rpm and 910 lb-ft of torque at 1,600 rpm.
Which Duramax has the most horsepower?
The new L5P Duramax is by far, the most capable duramax to date, producing 445 horsepower and 910 lb-ft of torque in stock form. Similar to the LML, the L5P utilizes the same 6.6L displacement.
What kind of engine does a Duramax LB7 have?
With the horsepower and torque of the Duramax nearly doubling from 2001 to 2020, this is certainly true for this 6.6L V8 engine. The LB7 is the original production 6.6L Duramax V8.
What kind of Turbo does a Duramax truck have?
Traditionally, Duramax trucks have been equipped with Garrett units so this is a big shift! This BW variable vane turbocharger utilizes a billet compressor wheel with 11 blades and has a slightly larger inducer than previous Duramax generations. Maximum boost pressure is increased over the LML, to 28 psi in order to provide better performance.
What size turbo does a 2003 Duramax have?
01-04.5 DURAMAX 6.6L TURBO (LB7)
What size turbo is on a LB7 Duramax?
60mmStock Turbo, 1,200 HP! Along with the engine, the factory 60mm IHI turbocharger is still aboard Buddy's LB7.
What size turbo does a 6.6 Duramax have?
LLY. The LLY (internally called the 8GF1) (engine code "2") is a 6.6 L; 403.9 cu in (6,619 cc) turbocharged engine which debuted in mid-2004 and continued until the end of 2005. It is a 32-valve design with high-pressure common-rail direct injection and aluminum cylinder heads.
What size turbo does a Duramax have?
LML 11-16 RDS 66MM Duramax Turbocharger Brand New.
What turbo is on a LB7?
1. The Stealth 64 LB7 Turbo from DuramaxTuner offers true drop-in, bolt-for-bolt installation for the 2001-2004 LB7 Duramax and will support over 600 hp while maintaining great daily driver and towing performance.
How much boost can a stock LB7 make?
yes. 32 psi is the max on an LB7 turbo.
What size is LBZ turbo?
GM 6.6 Liter LBZ V-8 Duramax Turbo Diesel EngineDisplacement:6.6L / 403 cu. in.Vehicles:Chevrolet Silverado HD, GMC Sierra HDIntroduced:Mid-2006 model yearDiscontinued:2007 model yearPredecessor:LLY Duramax V83 more rows
Will a LBZ turbo fit on a LB7?
You cant put a VGT turbo on an LB7 truck without some sort of controller. The turbo brake is not the same thing as a stand alone VGT controller. The turbo will work, but the vanes will be stuck in one position.
Will a lly turbo work on a LB7?
The LB7 ECM has no way to control the LLY turbo.
How much horsepower does a 2003 Duramax diesel have?
Horsepower & TorqueYear(s)Horsepower:Torque:2001-2003235 Horsepower @ 2,700 Rpm500 LB/FT @ 1,600 Rpm2004300 Horsepower @ 3,100 Rpm520 Lb/Ft @ 1,800 RpmJun 3, 2019
Can you upgrade a stock turbo?
If you're looking to maximise the power and performance of your vehicle, then changing your stock turbocharger for a bigger or better model can be an effective part of the process.
How do I know if I have LB7 or lly?
If the 8th digit of your VIN number is a 1, then it is a LB7 Duramax (the early engine). If the 8th digit is a 2, then it is a LLY. In mid 2004, GM switched to this newer LLY engine.
What transmission is used in LB7 Duramax?
While today, all Duramax trucks are paired with the Allison transmission, LB7 Duramax trucks also had an available ZF 6-speed manual transmission option. Producing 235-300 horsepower and 500-520 lb/ft of torque, the LB7 Duramax was a beast.
What engine did GM use in 2001?
2001 was a huge year for GM lovers across the United States. Not only was 2001 the start of the Duramax engine, but also the famous Allison 1000 Transmission. This first Duramax engine mated with GM trucks was coined the LB7 Duramax.
What was the first diesel engine?
The 2001 LB7 Duramax was the first diesel engine in this class to utilize common rail technology. Common Rail tech wasn’t used until the 3rd Generation 5.9L Cummins in Ram trucks, or the 6.4L Powerstroke in Ford trucks. LB7 Duramax trucks also came before diesel emissions, so there is no DEF, DPF, or SCR here! You could just slap on a straight-pipe exhaust with no repercussions! No tuning needed!
Does GM use aluminum heads?
Unlike Ford’s Powerstroke or the Cummins engine in Ram trucks, GM used Aluminum heads on their Duramax engine. Many questioned their reliability initially as Ford and Dodge both used Cast Iron heads. To this day, however, GM uses the Cast Aluminum heads even in their L5P duramax.
When did the Duramax 6.6L V8 come out?
The Duramax 6.6L V8 turbo-diesel engine is nearing its 20th year of production, after debuting in 2001. Over the engine’s lifespan it has gone through 6 different engine variations: LB7, LLY, LBZ, LMM, LML, and L5P.
Which Duramax has the largest turbo?
With the Garrett GT3788VA, the LLY Duramax has the largest turbocharger in it out of any other 6.6L Duramax variation. Given the larger turbo and various other small engine improvements, the LLY has the biggest horsepower gains from a tune only compared to any other variation, with the exception of the L5P Duramax.
What is the LBZ engine?
For most folks, the LBZ is a dream of an engine and will do whatever you’d like it do while maintaining its reliability. However, for those diesel power enthusiasts looking to push engines to massive horsepower numbers, the LBZ has its crux. The pistons on this engine are known to crack above the 600rwhp mark.
Is the Duramax 6.6 a V8?
With the horsepower and torque of the Duramax nearly doubling from 2001 to 2020, this is certainly true for this 6.6L V8 engine.
When was the 6.6L Lly Duramax made?
6.6L LLY Duramax. The LLY Duramax was produced from 2004 to 2006, before it was eventually replaced by the LBZ Duramax. It was a stepping stone for GM as they begun to encounter stricter emissions requirements thanks to the federal government and California.
What is the 2nd generation Duramax?
The 2nd generation Duramax is known as the LLY. Similar to the LB7, the LLY Duramax is reliable, powerful, and lacks most of the emissions found on modern day diesel trucks like the L5P. LLY Duramax trucks don’t suffer from the same injector failure problems that LB7 trucks frequently had. Instead, many LLY Duramax problems stem from overheating.
Does the Lly Duramax have a turbocharger?
Although our LLY Duramax specifications chart above does mention the turbocharger found on these trucks, it doesn’t mention the fact that these are one of the largest turbochargers found on any Duramax today.
6.6 Duramax Engine Overview
The 6.6L Duramax engine variants evolved with different components needed to meet global mandates for reducing emissions while maintaining and even increasing horsepower and torque over time. Since the first model year, the engines have become popular options for General Motors pick-up trucks, vans and medium-duty trucks.
6.6 Duramax Transmissions
The Allison 1000 transmission has been the standard automatic transmission for 6.6L Duramax diesel engines since the first (LB7) model was introduced in 2001. Early engines featured 5-speed automatic transmissions, and 6-speed automatic transmission was introduced in later models (2006 LBZ model and on).
Towing with a 6.6 Duramax
The best tow capacity comes with the 6.6L L5P Duramax diesel engine. Chevrolet and GMC HD trucks (2017-2019 model years) with the L5P Duramax have a maximum tow capacity of 23,300 pounds. In 2021, tow capacity increased to 36,000 pounds.
6.6 Duramax Engine Life Expectancy
The 6.6L Duramax diesel engine is sold with a warranty of 100,000 miles. Mechanics report that if properly maintained, the engine could survive up to 200,000 miles.
6.6L Duramax Common Engine Problems
Mechanics report that the best 6.6L Duramax diesel engine was the initial LBZ model, although other models are relatively reliable and durable. Mechanics report the most problematic models were the 6.6L LLY and LML diesel engines.
GM 6.6L Duramax vs. Ford 6.7L Powerstroke
General Motors’ 6.6L Duramax diesel engine series was in production a decade Ford introduced its own 6.7L Power Stroke diesel engine for Super Duty trucks in 2011. Over that time, GM was able to work out issues stemming from emissions equipment in mid-series production years. A choice over a diesel engine may come down to brand loyalty.
GM 6.6L Duramax vs. 6.0L Powerstroke
The 6.6L Duramax diesel engine launched a couple of years before Ford Motor Company and Navistar International launched the 6.0L Power Stroke diesel engine in 2003 for Ford Super Duty trucks, vans and sport utility vehicles.
What is the horsepower of a 2017 Duramax?
In 2017, the 6.6L V-8 L5P Duramax Diesel engine is introduced on Chevy HD and GMC HD trucks. The new L5P is the most capable Duramax thus far offering 445 horsepower @2,800 rpm and 910 lb-ft of torque at 1,600 rpm.
What transmission is used in Duramax?
The Allison Transmission is one of the most important features of Duramax trucks. Plenty of people consider these transmissions the most durable of all heavy duty diesel trucks. The L5P Duramax utilizes a 6-speed Allison Transmission from 2017 to 2019. In 2020, a 10-speed Automatic Allison Transmission replaces the old 6-speed.
What engine does a GM truck have?
Between 2017 and 2019, the GM Heavy Duty trucks equipped with the L5P Duramax engine look almost identical to the LML Duramax. The main way to differentiate the two trucks by only looking at the exterior is by the hood scoop. In 2020, Chevrolet and GMC both released their respective updated Heavy Duty body styles.
What fuel system does the L5P Duramax use?
The L5P Duramax uses a common rail direct-injection fuel system. Unlike fuel systems in the past, even as recently as the LML, this fuel system isn’t supplied by Bosch. The entire system is made by Denso. The fuel system operates at 29,000 psi, or 2,000 bar, which helps provide a cleaner fuel burn to reduce emissions and better overall performance.
How much can a 2017 L5P Duramax tow?
2017-2019 Chevrolet HD and GMC HD trucks with the L5P Duramax have a max tow capacity of 23,300 lbs.
What is the new Durabed?
Perhaps the most useful change GM made in 2020 is the new Durabed. New GM Heavy Duty trucks will have an increased bed length to 6’9″ on standard bed lengths and retain a 8′ long bed configuration. Both the larger, standard bed and the long bed will gain box length and max box volume however. Cargo is easier to lift into the bed as box lift-in height and overall height have been decreased. Up to 12 tow-hooks are available in the bed for your use to secure cargo. An optional 120 volt power outlet is available for all bed applications. Other noteworthy Durabed features include new side-panel bed steps capable of supporting 500 lbs, the corner steps integrated into the rear bumper, and a power up/down tailgate available on higher trim models. For specific L5P Duramax specifications on the new Durabed, take a look at the chart below.
Tow Ratings & Capacities
Tow ratings and capacities are different in the years of the LML Duramax. They depend on which body-style LML you have. Just like any truck, your cab configuration, whether your truck is a dually or not, and numerous other factors also have an impact on tow ratings and capacities.
ABOUT Kamil
Founder of Diesel Resource and a complete diesel head. Has a little bit of problem buying too many trucks. Learn more about him by checking out his truck.