The LML Duramax shocked its rivals when it was revealed, offering 397 horsepower and 765 lb-ft of torque while simultaneously lowering emissions and improving fuel economy. A new, improved engine block casting was used. GM increased oil film thickness by changing the main bearings’ profiles.
How much horsepower does a Duramax engine have?
The LML Duramax took a big performance leap to nearly 400hp and to 765lb-ft. of torque. To accommodate for the power increases, Duramax strengthened the block, pistons, rods, main bearing, and a higher flowing fuel pump.
Does the 2018 Chevy Silverado 2500 Duramax have a diesel engine?
This week I bring you the 2018 Chevy Silverado 2500 Duramax diesel Crew Cab truck. Chevy put an all-new diesel engine under the hood last year, but most of the truck is otherwise unchanged for 2018.
What problems do Duramax engines have?
Injector problems – The 6.6L Duramax is known for injector failures. In the 2001 to 2004 LB7 models, two primary issues are internal cracking and corrosion. Later engine models utilized a harder material and improved durability of the injectors.
What is the towing capacity of a Duramax?
Dually models will also have much better overall towing capacity. Maximum conventional tow capacity for the 6.6L LMM Duramax is 13,000 lbs. When equipped with a properly equipped dually, the LMM is capable of towing 16,700 lbs with a fifth-wheel hitch.
How much HP does a stock 6.6 Duramax have?
6.6L L5P Features This next-generation redesign offers more horsepower and torque than ever — an SAE-certified 445 horsepower (332 kW) and net 910 lb. -ft. (1,234 Nm) — to enable easier, more confident hauling and trailering.
How much horsepower and torque does a 6.6 Duramax have?
As reported last fall, the 2017 Chevy Silverado HD and GMC Sierra HD are now available with a redesigned 6.6L Duramax turbo-diesel V8 that produces an unprecedented 445 horsepower at 2,800 rpm and, more importantly, an earth-shaking 910 lb-ft of torque at just 1,600 rpm.
How much horsepower and torque does a 2019 Duramax have?
The 2019 Silverado Heavy Duty models, comprised of the Silverado 2500HD and 3500HD, offer the 6.6L Duramax V-8 L5P turbo-diesel engine. The optional motor makes 445 horsepower (332 kW) @ 2800 rpm and 910 pound-feet of torque (1220 Nm) @ 1600 rpm.
How much horsepower does a 2020 6.6 Duramax have?
445 hpThen there's the legendary Duramax 6.6L V-8 Turbo-Diesel, making 445 hp and 910 lb-ft of torque, coupled with an all-new Allison® 10-speed automatic transmission.
Is Duramax better than Cummins?
The Duramax leads with horsepower, but the Cummins is the king of torque with numbers up to 1,000 ft-lbs depending on the truck.
How much horsepower does a 2021 Duramax diesel have?
The optional Duramax diesel 6.6-liter V-8 carries over from the previous generation. It continues to make 445 horsepower and 910 lb-ft, but now it hooks up to an Allison 10-speed automatic.
How much horsepower does a 2018 6.6 Duramax have?
445 horsepowerWith 445 horsepower and 910 lb/ft of torque, the L5P Duramax is capable of towing just about anything you can throw at it.
How much horsepower does a 2018 Chevy Duramax have?
360 to 445 hp2018 Chevrolet Silverado 2500HD / Horsepower
How much horsepower does a 2017 6.6 Duramax have?
445 horsepowerDALLAS — Chevrolet today announced the redesigned Duramax 6.6L V-8 turbo-diesel offered on the 2017 Silverado HD. This next-generation redesign offers more horsepower and torque than ever — an SAE-certified 445 horsepower (332 kW) and 910 lb. -ft. (1,234 Nm) — to enable easier, more confident hauling and trailering.
How much torque does a 2020 Duramax have?
910 LB-FT ofThe 2020 Chevrolet Silverado HD Duramax Diesel Can Tow Up to 35,500 Pounds With 910 LB-FT of Torque. Chevy has finally revealed the full lineup of the 2020 Chevrolet Silverado HD, which is now available with a 6.6-liter Duramax turb-diesel V8 with 910 lb-ft of torque and capable of towing a max payload of 35,500 pounds ...
What is the strongest Duramax engine?
L5P. The L5P duramax is the latest version of the Duramax V8 diesel engine. (engine code Y) Introduced in the 2017 model year it is the most powerful diesel pickup truck engine GM has produced with 445 hp (332 kW) at 2,800 rpm and 910 lb⋅ft (1,234 N⋅m) at 1,600 rpm.
How much HP does a L5P Duramax have?
445 horsepowerFor reference, the 6.6L V8 L5P Duramax engine is rated at 445 horsepower at 2,800 rpm and 910 pound-feet of torque at 1,600 rpm from the factory.
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.
What is a Duramax truck?
The LMM Duramax refers to Chevrolet Silverado HD and GM Sierra HD trucks equipped with the 6.6L Duramax diesel engine between the years of 2007.5-2010. It was very similar to the LBZ, but it featured an all-new emissions device, a diesel particulate filter. While it reduced emissions output drastically, the DPF system on the LMM resulted in these trucks having terrible fuel economy. This is mainly because of the post-injection regeneration method used. The DPF system and the regeneration process it undergoes is one of the LMM Duramax truck’s biggest problems. Despite the DPF system, the LMM Duramax is still a reliable and capable diesel. You can find everything you need to know about this truck in our LMM Duramax specifications chart below.
Is the LMM Duramax diesel reliable?
Despite the DPF system, the LMM Duramax is still a reliable and capable diesel.
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 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.
High Country Trim
Standard Features and Options
- Notable standard features on the High Country include forward collision alert, bed liner, running boards, leather heated and cooled seats, remote start, power sliding rear window, rear camera, and the safety alert seat, which vibrates if the truck senses a collision. It also has the rear seat reminder system. A few other neat features at no charge are USB ports, 110-volt power outlet, fr…
Ride, Fuel Economy and What You'll Pay
- This truck is actually very comfortable to drive, and you don’t feel like you are fighting it. I suspect you would get that same sensation even when towing a trailer. The cab is quiet and you barely hear the engine. The torque under heavy acceleration will pin you to the seat. Overall driving in this truck is quite enjoyable for a truck as large as this one. Although not officially rated by the EPA, t…