Best Duramax years. The Duramax can be an excellent engine for your truck if you avoid the model years above and stick to its durable and reliable ones. Below, we …The 2007 model year marked significant changes across the GM truck lineup. With the all-new Chevrolet Silverado and GMC Sierra 1500 (1/2-ton) models already introduced for 2007, the all-new Heavy-Duty version of the GM trucks were released roughly mid-model year (often referred to as a 2007.5).1. 2005 Duramax. The 2005 Duramax is one of the worst engines of the entire series. The thing that makes it fail the most is that it has a head gasket problem, which means that the head gasket fails and causes an excess of oil in the coolant. This can cause overheating problems, which will lead to more failures.Saids they get better every year. Seems to have problems with his 2016 though, brake controller replaced and now steering rack @ 50,000 miles. 2010 Gmc 2500 Duramax 853,500 Odometer miles - sold Nov 2018. 2013 LT CCSB SRW bought with 508,000 miles, now over 703,000 miles.This pump became an integral component of this high-performance, heavy-duty truck model for these years. Another vehicle that sported the CP4 pump was the GMC Sierra HD. Similar to the Silverado, models from the years 2011-2016 running on the 6.6L Duramax diesel engine featured the CP4 pump.The LB7 was introduced in 2001 and used until early 2004 before it was replaced with the LLY Duramax. What Year of LB7 is the Best? Although all years of the LB7 potentially had a few issues, including problems with the head gasket, the LB7 Duramax injectors, and the fuel filter housing o-rings, the LB7 is generally considered a reliable engine ...The new year can be a meaningful time to implement a momentous change. But not everything needs to be a total overhaul—small, simple changes can have surprisingly powerful effects....The very best years to own are the 06-07 LBZ (Classic Body). The 07.5 is the new LMM new body style and has the DPF on it which robs fuel mileage. The LBZ has the most hp and torque only a catalytic converter in thye exhaust system that is easily done away with. The least problems are with the LBZ models.The LML Duramax, introduced for the 2011 model year was a powerhouse. Coming out of the gate with 397hp and 765 lb/ft of torque, this Duramax diesel featured an advanced fuel injector design and increased line pressure to …The 2023 Duramax engines, including the 3.0-liter inline-six, have seen power and torque improvements, making them a great option for those seeking a diesel engine in a light truck or SUV application.As previously stated, the first model year of Duramax was 2001 with the LB7 engine code. This model featured a 3.5″ exhaust system with a catalytic converter and a muffler. This basic system was utilized all the way through 2007 model years ending with the LBZ engine code. The factory exhaust is relatively adequate for engines producing …A little over 3 years after the initial concept, the LB7 Duramax diesel went into production. The resulting engine was a state-of-the-art 6.6L V8 with four-valves-per-cylinder. The LB7 put out a segment-best 300 hp and 520 lb-ft of torque. The LB7 Duramax was considered revolutionary at the time and utilized a turbocharger, intercooler, and ...Get 2022 off on the right foot -- and earn points, miles or cash back while you're at it. Update: Some offers mentioned below are no longer available. View the current offers here....Your mileage may vary, but so far the 3.0L Duramax hasn’t quite lived up to the 33-mpg hype. We’ve seen trucks come close in 99-percent, steady-state highway cruising, but most hand-calculated fuel economy numbers for 4x2 model Silverados range from 27-mpg to 31-mpg.Oct 9, 2023 · Known for their power, durability, and innovation, Duramax engines have been a staple in the automotive industry for years. Fast forward to the present day, and we have the modern Duramax engines that continue to push the boundaries of performance and innovation. Updated: March 21, 2024. The Duramax engine is a diesel-powered motor that was originally introduced in 2001. With more than two million produced, it’s wise to know the best and worst years of the Duramax engine because they aren’t all reliable. In this guide, we …DMAX Ltd. Turns Out Number 2 Million. At the time of its release for ’17 model year Chevy Silverado and GMC Sierra HDs, the L5P Duramax belted out a class-leading 445hp, along with an impressive 910 lb-ft of torque at just 1,600 rpm. As a result, an unladen ¾-ton crew cab 4x4 could sprint from 0 to 60 mph in just over six seconds—not …Feb 1, 2023 · Which Duramax years to avoid? There are great Duramax engine models out there for you to try; however, there are specific model years that you should avoid. Below, we give a rundown of these years to avoid. Duramax LB7: 2001-2004 model years. As the first Duramax model to be released, the LB7 is still very popular among diesel enthusiasts due ... When we're young, it's hard to even imagine ourselves in our "golden" years, perhaps needing help with everyday activities. But the fact is, Americans are living longer now; and th...The reasons go well beyond the popularity of Emma Stone and Emma Watson. There have been some great baby name runs in American history. Emma is on one of them. For five consecutive...Jan 26, 2022 ... ... :25 Under The Truck 14:29 Ending. 2001-2007 Duramax LB7/LLY/LBZ Buyers Guide. 34K views · 2 years ago ...more. Dirty Diesel Customs. 4.67K.The good news is that if you’re searching in that model year range of 2006-2011, the only time you’ll run into a vehicle with a CP4.2 would specifically be a 2011 Chevrolet/GMC Duramax or 2011 Powerstroke, as that was the first year of the LML and 6.7 Powerstroke engines.Our journey through the progression of Duramax diesel engines will examine how these engines have reshaped expectations and set new standards in the diesel domain since their debut in 2001. From the very first LB7 model to the latest advancements, Duramax engines have undergone significant transformations, each iteration pushing the boundaries ...How much does a Cateye Duramax cost? You will have to pay around $10000 for Silverado 1500, and it can go up to $15000 if you prefer later model years and higher trims. The price might rise well above $25,000 if you have your heart set on the diesel model. Bottom line. Cateye Duramax is one of the Silverado models with huge demand.The Duramax engine has been one of the most popular diesel engines in the US for over two decades. Duramax is a heavy-duty V8 diesel engine co-developed by GM and Isuzu. It was introduced in 2001 as the upgrade for the 6.2L and 6.5L Detroit engines. It turned out to be a competent and powerful competitor in the light diesel market. The engine has undergone various improvements over the years ...LB7: 2001 – 2004. As the original Duramax model, the LB7 is still extremely popular with diesel enthusiasts due to its lack of emissions control parts. In general, it’s a very durable and reliable engine. However, as the first models hit the 100,000-mile mark, some issues cropped up. Injector failure was a common problem on the LB7 engines.Dec 13, 2020 · Personally, as of now, the LML years (11-16) are the only ones that I would try to avoid unless the CP4 was replaced with a CP3. The L5P’s seem to be pretty solid. If I ever update from my LBZ I will be looking to jump into a K2 platform L5P most likely. 2006 Silverado 2500 4x4. LBZ. Apr 3, 2024 · The LBZ is great in stock form, but get horsepower numbers above 600, and it needs some upgrades to survive. LMM: 2007.5 Through 2010. The LMM engine ushered in the emissions era of Duramax. Although the LMM is almost the same as the LBZ, which makes it a very good engine, it features several new emissions control devices. The Duramax L5P was launched in 2017 and made an appearance in models like the 2017 GMC Sierra HD and the 2017 Chevrolet Silverado HD. Producing 445 hp and 910 lb-ft of torque, this was one of GM ...While most known Duramax problems affect specific model years, the faulty fuel system is an issue that plagues all model years. It usually starts with difficulty starting the vehicle and then transits to excessive smoke, poor fuel economy, lower RPMs, loss of engine power, and excessive noise. While there are several fuel system problems out ...Mar 21, 2023 · The 6.6-liter Duramax LBZ was a short-lived engine only available for two model years. To meet increasingly strict emissions standards, the LBZ was a more aggressively tuned version of the previous LLY engine. Mechanically, the LBZ used the same Duramax parts as the LLY, but the LBZ generated 360 horsepower, while the LLY only generated 310 ... The joint venture (and resulting engine) was known as Duramax, and the LB7 was the first of many models to come. It’s a 6.6-liter, common-rail injected, 32-valve, V8 turbodiesel which put out 235hp and 500 pounds of torque in its first year, and for the final year of ‘04 the LB7’s output had grown to 300hp and 520 pounds of torque.Nov 14, 2018 ... As of 2018, a total of 7 generations of the Duramax diesel have been produced. The LB7 was first introduced in late 2000 for the 2001 model year ...A little over 3 years after the initial concept, the LB7 Duramax diesel went into production. The resulting engine was a state-of-the-art 6.6L V8 with four-valves-per-cylinder. The LB7 put out a segment-best 300 hp and 520 lb-ft of torque. The LB7 Duramax was considered revolutionary at the time and utilized a turbocharger, intercooler, and ...Duramax History, Lesson 2: LLY. Midway through the 2004 model year, GM released the second-generation Duramax, RPO code LLY. Although much of the LLY’s internals match what you’ll find in the LB7, this version of the 6.6L V8 brought an improved injector design, variable geometry turbocharging and cleaner emissions to the table.The best years for the duramax were 2011-2016 while the worst years were 2001-2004. During this time, the duramax was plagued with injector and fuel system issues. The duramax engine is a popular choice among truck owners due to its power and reliability.How much does a Cateye Duramax cost? You will have to pay around $10000 for Silverado 1500, and it can go up to $15000 if you prefer later model years and higher trims. The price might rise well above $25,000 if you have your heart set on the diesel model. Bottom line. Cateye Duramax is one of the Silverado models with huge demand.Whether you’re after horsepower and torque, fuel economy, ride comfort or reliability, the Duramax-equipped rigs coming out of Detroit over the past decade and a half are tough to beat. What Others Are …Saving flower seeds is an easy and economical way to expand your garden. Read on to find out how to collect and save flower seeds to grow in next year's garden. Expert Advice On Im...Mar 21, 2023 · The 6.6-liter Duramax LBZ was a short-lived engine only available for two model years. To meet increasingly strict emissions standards, the LBZ was a more aggressively tuned version of the previous LLY engine. Mechanically, the LBZ used the same Duramax parts as the LLY, but the LBZ generated 360 horsepower, while the LLY only generated 310 ... Everybody loves free things. And they're easier to find than you'd think! Here's a list of the top 50 free items you can get this year. What’s that you say? You like free things? W...Jan 1, 2019 · HP Potential: LLY. With the largest version of the factory Garrett GT3788VA turbocharger bolted to it, the LLY (found in ’04.5-’05.5 trucks) has arguably the most tune-only horsepower potential of any Duramax produced between 2001 and 2016. Thanks to its 62.6mm inducer compressor wheel and the tallest turbine vane height (15mm) of any ... 2006-2007 LBZ has the problems from previous generations fixed, and now the weak link is pistons. These also have 6 speed transmissions instead of the 5 speeds. 2007.5-2010 LMM has the DPF system but is otherwise the same as the 2006-2007 LBZ. 2011-2016 LML has DPF and DEF. Changed the injection pump from a CP3 to a CP4. Saids they get better every year. Seems to have problems with his 2016 though, brake controller replaced and now steering rack @ 50,000 miles. 2010 Gmc 2500 Duramax 853,500 Odometer miles - sold Nov 2018. 2013 LT CCSB SRW bought with 508,000 miles, now over 703,000 miles.History was made in January 2001 when General Motors introduced its first Duramax diesel engine for the 2002 model year Chevrolet Silverado and GMC Sierra heavy-duty trucks —a 6.6-liter V-8...1. 2005 Duramax. The 2005 Duramax is one of the worst engines of the entire series. The thing that makes it fail the most is that it has a head gasket problem, which means that the head gasket fails and causes an excess of oil in the coolant. This can cause overheating problems, which will lead to more failures. The name Duramax was chosen for the new engine to signify durability and maximum power, cleanliness, and fuel economy. The new engine created and built by DMAX Ltd was a 6,599 cubic centimeter (6.6 Liter), direct-injection, turbo-charged Diesel V8 with 90-degree placement, aluminum cylinder heads, and 32 overhead valves. At the low end of the market, the Cateye is likely to cost at least $10,000. Going for later model years or higher trims will get you closer to $15,000. If you opt for the Duramax version, plus a later model year and a higher trim, you could easily be paying at least $25,000. Aftermarket SupportBanks explains that the new 2024 L5P Duramax engine boasts pistons with a more “pointed” area in the center of the piston which nearly mimics the racing-style pistons they [Banks] designed years ago. This design is the perfect mixture of a lean area and a rich area of the piston which results in fewer pollutants.LB7: 2001 – 2004. As the original Duramax model, the LB7 is still extremely popular with diesel enthusiasts due to its lack of emissions control parts. In general, it’s a very durable and reliable engine. However, as the first models hit the 100,000-mile mark, some issues cropped up. Injector failure was a common problem on the LB7 engines.The 2011-2016 Duramax suffers from a high pressure fuel pump issue unique to this year range. Failure of this CP4 pump is usually catastrophic, causing instant contamination of the entire fuel system with metal particulates. Chances are, if you’re looking at this page, you’re well aware of the problem.The 2007 to 2010 model years of 2500 HD and 3500 trucks featured a new body style, vastly improved interior, and the first version of the Duramax LMM engine to have an exhaust after-treatment process that required fuel for it to function. The 6.6L L5P Duramax was mated to the tried-and-true Allison 1000 six speed automatic transmission for 2017 to 2019 model years. For 2020, the GM-Allison 10L1000 ten speed automatic transmission became standard; although Allison transmissions was responsible for rigorously testing the transmission, it is a GM design and is assembled at GM's ... The Duramax L5P was launched in 2017 and made an appearance in models like the 2017 GMC Sierra HD and the 2017 Chevrolet Silverado HD. Producing 445 hp and 910 lb-ft of torque, this was one of GM ...Duramax diesel has been an option across a complete line of light and medium-duty trucks, cars, and Duramax is a cooperative undertaking between General Motors and Isuzu. What Year Chevrolet and GMC Trucks Require DEF. In 2007, Duramax produced a 6.6L engine with new diesel particulate filter technology.The LB7 Duramax was first introduced for the 2001 model year in the Chevrolet Silverado HD, GMC Sierra HD, GMC TopKick (medium duty) and Chevrolet Kodiak (medium duty) trucks. That year also brought the Allison 1000, arguably the first automatic transmission in its class worthy of being mated to a powerful diesel.Basic Operation Principles. Not only was the CP3 used on the Duramax engines from 2001-2010, the Dodge Cummins has been using its common rail technology since 2003. The radial three piston design is gear driven off the engine. Obviously, its main purpose is to create high pressure for the fuel rail, which feeds fuel to the individual …Environmental Pollution Agency has made DEF or diesel fluid exhaust compulsory since 2010 in all diesel trucks. Duramax began to use the DEF system in 2011 to till now. Before then, Duramax didn’t use DEF technology in their diesel trucks. DEF reduces 90% NOx from the exhaust system and increases a diesel truck’s fuel efficiency and horsepower.Maintenance requirements (oil, filter changes) for a diesel engine are about the same as for gas-powered vehicles. Duramax engines are known for their reliability and come standard with a 5-year/60,000-mile limited warranty on 2.8L Turbo-Diesel engines, or a 5-year/100,000-mile limited warranty on 3.0L and 6.6L Turbo-Diesel engines.2006-2007 LBZ has the problems from previous generations fixed, and now the weak link is pistons. These also have 6 speed transmissions instead of the 5 speeds. 2007.5-2010 LMM has the DPF system but is otherwise the same as the 2006-2007 LBZ. 2011-2016 LML has DPF and DEF. Changed the injection pump from a CP3 to a CP4.As a result, you have to be careful while buying some Duramax models from the undermentioned years. The following are the years and their problems: LB7 Duramax (2001-04) LB7 Duramax was the first generation of the V8 Duramax engine and it did quite well. It was reliable and gave quite a raw feel like the one that diesel enthusiasts crave from ...Depending on the year and model, the Duramax engine can produce anywhere from 235 to 445 horsepower and 500 to 910 lb-ft of torque. The benefits of the Duramax engine are numerous. It is known …The VIN number can always be found on your vehicle's title or registration card. It is important to know which engine you have because not all components are interchangeable between the various versions of Duramax engines. Duramax VIN Chart. Model Year(s) 8th Digit of VIN Code Duramax Models & Notes 2001 - 20041 2 • LB7 • LLY (introduced ...GMC Sierra 3500HD. With a few periodic dips in fuel efficiency through the years, the GMC Sierra 3500HD has stayed steady with a fuel economy right around 13.5 miles per gallon. With the 3500HD having a slightly larger body than the 2500HD, it’s not surprising that the fuel economy takes a bit of a hit.Here are the years of Duramax engines to avoid: 2001 to 2004 LB7. 2004 to 2005 LLY. 2006 to 2007 LBZ. 2007 to 2012 LMM. 2007 to 2016 LML. These engines are prone to numerous problems, including issues with the fuel lift pump, water pump, fuel injector, piston, and fuel pressure lift pump. Read on to learn more about the Duramax years to …#3 · Dec 13, 2020. Personally, as of now, the LML years (11-16) are the only ones that I would try to avoid unless the CP4 was replaced with a CP3. The L5P’s seem to be pretty …Depending on the year and model, the Duramax engine can produce anywhere from 235 to 445 horsepower and 500 to 910 lb-ft of torque. The benefits of the Duramax engine are numerous. It is known …Dec 26, 2018 · DMAX Ltd. Turns Out Number 2 Million. At the time of its release for ’17 model year Chevy Silverado and GMC Sierra HDs, the L5P Duramax belted out a class-leading 445hp, along with an impressive 910 lb-ft of torque at just 1,600 rpm. As a result, an unladen ¾-ton crew cab 4x4 could sprint from 0 to 60 mph in just over six seconds—not bad ... Personally, as of now, the LML years (11-16) are the only ones that I would try to avoid unless the CP4 was replaced with a CP3. The L5P’s seem to be pretty solid. If I ever update from my LBZ I will be looking to jump into a K2 platform L5P most likely. 2006 Silverado 2500 4x4. LBZ.A charge-off on your credit report means the original creditor has given up on trying to collect the debt and is going to write it off as a loss. However, that does not mean you ar...Saids they get better every year. Seems to have problems with his 2016 though, brake controller replaced and now steering rack @ 50,000 miles. 2010 Gmc 2500 Duramax 853,500 Odometer miles - sold Nov 2018. 2013 LT CCSB SRW bought with 508,000 miles, now over 703,000 miles.In terms of specs, the big changes are the peak power and torque figures, with the new 3.0L I6 LZ0 turbodiesel Duramax engine producing a maximum of 305 horsepower at 3,750 rpm and 495 pound-feet ...Duramax Diesel engine RPO codes include: LB7. VIN Digit: 1. Applications: 2001-Early 2004 Chevy Silverado and GMC Sierra, 2001-2005 Chevy Kodiak and GMC TopKick. Details: First version of the Duramax diesel. Known for fuel injectors leaking into the oil supply; see TSB #04039B.To buy a Duramax engine, you must know which years should be avoided. Avoid these 4 models of Duramax. 2001 to 2004 Duramax LB7; 2004 to 2005 Duramax LLY; 2006 to 2007 Duramax LBZ; 2007 to 2012 Duramax LMM; All these engines have minor issues. Now we discuss these models and their problems in detail. 2001-2004 …The 6.6-liter LBZ Duramax V8 diesel engine was introduced midway through the 2006 model year, when it replaced the 6.6 liter LLY Duramax variant. As such, it powered Chevrolet Silverado Heavy-Duty ...Duramax Years to Avoid. You should avoid buying Duramax LB7, LLY, LBZ, and LMM. In short, you must avoid buying Duramax 2001 to 2010 model year. On the other hand, Duramax L5P is the best Duramax to buy. If you don’t have enough budget to buy L5P then you can go for Duramax LML.The 6.6L Duramax V-8 was discontinued for the vans' 2017 model year, and GM promises it will replace the big diesel with a version of the 2.8L Duramax I-4 soon. See All 21 Photos AdvertisementLML Duramax Specifications Chart. Manufactured Years: 2011-2016. Engine Design: 6.6L 90-Degree V8 Turbocharged Diesel. Transmission: 6-Speed Allison Transmission. VIN Identification:Jan 23, 2022 · As a result, you have to be careful while buying some Duramax models from the undermentioned years. The following are the years and their problems: LB7 Duramax (2001-04) LB7 Duramax was the first generation of the V8 Duramax engine and it did quite well. It was reliable and gave quite a raw feel like the one that diesel enthusiasts crave from ... Oct 10, 2020 ... On this episode of DGsTV, Dustin talks about this Duramax L5P we had in with some issues ... DG'sTV - Duramax L5P Issues. 73K views · 3 years agoThe Duramax was a late-year arrival for the 2019 Chevy Silverado 1500 and GMC Sierra 1500 pickups, with the 2020 model year being the first full year of availability. It was matched to the GM ...The 2021 and 2022 Colorado model years are great picks and are the most reliable options from the second generation. For 2021 the Colorado received an updated front-end design, a stamped Chevrolet logo across the tailgate, and some minor standard and optional equipment shuffling. It carried over to 2022 unchanged.It’s one of the major reasons this L5P is the highest stock horsepower Duramax to ever hit the market. 3. No More CP4 Pump. I can already hear the clapping, which makes sense. The prior pump truly ran into a lot of issues. This has to be one of the reasons why GM went with Denso’s HP4 pump.Sep 1, 2014 ... Active member ... 01-10 will physically go in an any year block. Balancer and flywheel have to be correct for that crank. Lb7 and LLY share the ...The LB7 Duramax was first introduced for the 2001 model year in the Chevrolet Silverado HD, GMC Sierra HD, GMC TopKick (medium duty) and Chevrolet Kodiak (medium duty) trucks. That year also brought the Allison 1000, arguably the first automatic transmission in its class worthy of being mated to a powerful diesel.Worst Duramax Engine Model Years. While the Duramax engines seem to be mostly reliable these days, the earlier years exhibited a lot of problems. We can’t recommend the 2001-2004 LB7, the 2004-2005 LLY, the 2006-2007 LBZ, the 2007-2012 LMM, or the 2011-2016 LML. Take a look at the most common complaints about these Duramax engines.The inaugural Duramax, RPO code LB7, would bring the first aluminum cylinder heads to the diesel pickup segment, introduce the same market to common-rail …
The VIN number can always be found on your vehicle's title or registration card. It is important to know which engine you have because not all components are interchangeable between the various versions of Duramax engines. Duramax VIN Chart. Model Year(s) 8th Digit of VIN Code Duramax Models & Notes 2001 - 20041 2 • LB7 • LLY (introduced ... . Hourly weather forecast cleveland
Power and performance. According to Chevrolet, the 6.6-liter Duramax turbo diesel features eight cylinders with a displacement of 403 cubic inches and comes equipped with a turbocharger for added ...The next few generations of the Duramax delivered solid upgrades to the design. Most companies would have made these running changes, but GM identified each revision as a different model. The next revision, referred to as the LLY, was a mid-year change in 2004. The easiest way to tell whether the engine is an LB7 or an LLY is by the valve covers.36 posts · Joined 2010. #4 · Jul 11, 2017. I currently have 9K miles on my L5P. I drive 70miles round trip to work, non-highway, with hills through towns. I had set the trip odometer the day I bought it and it's averaging almost 17, including some mild camper towing. Tank to tank I'm seeing better than 18 with regens.The very best years to own are the 06-07 LBZ (Classic Body). The 07.5 is the new LMM new body style and has the DPF on it which robs fuel mileage. The LBZ has the most hp and torque only a catalytic converter in thye exhaust system that is easily done away with. The least problems are with the LBZ models.While the LML Duramax is a reliable engine overall, there are a few years that have been known to have more problems than others. In this section, we’ll take a closer look at the 2011 and 2012 models and the issues that have been reported. 2011. The 2011 LML Duramax is one year that some owners have had issues with.You might not run a marathon, but you can meet your smaller goals.Jun 3, 2019 · 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. Whatever its year or generation, every Duramax is a 6.6L V8 unit. Unlike Cummins or Ford, who altered key engine features such as displacement, cylinder head design or fuel injection throughout the years, GM has retained the same general layout from the beginning. The LB7 was the first Duramax engine, first introduced in year 2001.Newer body style ones have a tone of emissions junk on them. This year is the best IMO. Jason. 2006 Silverado 2500HD LBZ CC SB. Exterior: Escalade Handles, Front windows tinted to match the rear, painted bumpers & mirrors, billet grille, 305/50/20 Cooper Zeons on BMF Novakanes Death Metal, Cognito Braces, Stainless Sleeves, …Jun 16, 2010 · carter_44. 4571 posts · Joined 2008. #5 · Jun 20, 2010. The Duramax is a great motor in a great truck with a great transmission behind it. The Cummins is a great motor in a piece of **** truck with a questionable transmission. That should be all you need to know. The Duramax is the superior truck. Besides the V8, as of 2019, GM offers an inline six Duramax for the Silverado 1500 and other models. A Duramax engine lasts 250,000 miles or around 20 years on average, but with good maintenance, it can do over 400,000 miles easily. The best years for Duramax are 2006-2007 “LBZ,” and the latest, post 2017 “L5P”.The very best years to own are the 06-07 LBZ (Classic Body). The 07.5 is the new LMM new body style and has the DPF on it which robs fuel mileage. The LBZ has the most hp and torque only a catalytic converter in thye exhaust system that is easily done away with. The least problems are with the LBZ models.Dissecting 6.6L Duramax Engines Whether you’re looking for fun or looking to win, the Duramax platform is certainly one to consider. ... “Then, when we build 800-1,000 hp, a year or two later, they’re back wanting to push 1,200-1,400 horsepower. For that reason, if we’re building for 1,000 hp, we’re building for 1,500 hp to be safe ....