What year of Duramax is best?

LBZ: 2006 – 2007

It has the best potential for performance and horsepower additions through various Duramax parts mods and tuning. Built stronger and more durable than previous engines, the LBZ is reliable and powerful.

What year Duramax has the least problems?

Despite it being more complicated than its predecessors, it is more reliable. The safest Duramax model years you can buy are the models produced from 2011 to 2021.

What years is the Duramax good?

While it has lost its footing on multiple occasions, it remains one of the top diesel engines on the market and is a solid buy for truck owners. The best and worst years for Duramax include the 2007 engine, widely regarded as the best, and the 2003 Chevy Engine, which was the most problematic.

What year Duramax has injector problems?

What year Duramax has injector problems? The LB7 Duramax built from 2001 – 2004.5 is known for injector failure. The good news is the replacement injectors you purchase from us incorporate several updates to help prevent repeat failures.

Is the LB7 or LLY better?

The LB7 was the simplest in terms of emissions controls, while the LLY came with the largest turbocharger ever offered. The LBZ packed a host of improvements, including considerably more power, and the LMM was nearly a mirror image of it aside from its use of a diesel particulate filter.

The Ultimate Duramax Engine Guide (And Why It's The Best)

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 many miles will a 6.6 Duramax last?

The Duramax™ 6.6L V8 Turbo Diesel Engine is sold with a warranty of 100,000 miles/160,000 kilometers. The Duramax™ has been tested to survive upwards of 200,000 miles/320,000 kilometers. The Duramax™ powertrain is designed for reliability, peak horsepower and torque within its design limits.

Which 6.6 Duramax gets the best MPG?

2021 GMC Sierra 2500HD

This Duramax 6.6-liter V-8 gets 17 to 19 mpg on the highway.

How many MPG does a 6.6 Duramax get?

We tested the Silverado 2500HD with the gasoline 6.6-liter V-8, and it earned 14 mpg on the highway. For comparison, we tested an F-250 with the gas-fed 6.2-liter V-8 and six-speed automatic transmission, and it returned 15 mpg in the same test.

What generation Duramax is best?

LBZ: 2006 – 2007

It has the best potential for performance and horsepower additions through various Duramax parts mods and tuning. Built stronger and more durable than previous engines, the LBZ is reliable and powerful. The only weakness is that the pistons are known to crack if you get over 600 horsepower output.

Is the LLY or LBZ better?

there are no difference from the lly to lbz engine wise and transmission wise its exactly the same, the ecm has the tune of a 05 lly with 310hp and not the lbz which is 350hp throw a tuner on there and its not gonna matter.

Why are LBZ the best Duramax?

The LBZ employed a thicker engine block casting, meatier connecting rods, and a higher pressure common-rail fuel system. This gave it more power and reliability versus any other Duramax to that point.

What is the most reliable 2500 diesel truck?

We found the Chevrolet Silverado 2500 to be the most reliable based on the data. In particular, Chevy's truck rose highest because of its strong ranking on J.D. Power's Vehicle Dependability Study. The Ram 2500 is a very close second.

What is the most reliable diesel truck engine?

The 7.3L Powerstroke is still considered one of the most reliable diesel engines ever made. It also has plenty of power for most applications, with 500 pound-feet of torque and 235 horsepower. It was built for the long haul, too with an air-to-air intercooler, oil-based fueling, and durable internal hard parts.

Is LMM or LML better?

LML is arguably a better engine but there are issues with DEF on all makes; Ford, Ram and GM. LMM emission controls have proved to be as reliable as any.

What 3/4 ton truck gets the best fuel mileage?

The best fuel-efficient 3/4 ton truck is the Ram 2500. This truck gets an EPA-estimated 22mpg on the highway and 16 mpg in the city. Alternatively, the Chevrolet Silverado 2500, Ford F-250, and GMC Sierra 2500 are all available with a fuel-efficient diesel engine option.

How long can a Duramax idle?

Any LB7 truck can be ran at idle with no problem. GM says the lly and up trucks with an egr cooler and valve can only be idled for 10 minutes MAX is what gm technical assistance tells us.

How often should I change oil in my Duramax?

Change your LLY's engine oil and filter at least once every 6 months and your fuel filters once a year. Keep an eye on your air filter and change it as needed. If you're in very dusty areas you will likely need to change it sooner.

How long do Allison transmissions last?

These trucks can (and do) regularly hit 200,000 miles. The truck and drivetrain will only last as long as you maintain it, though. There are parts that fail, just like anything else. But regular maintenance (fluid changes, body upkeep, hard part care) will help you have a very long relationship with your truck.

What are the problems with the 6.6 Duramax?

Water Pump Problems Are Common

These impellers are extremely weak and prone to failure. Water pumps on Duramax engines are also prone to leaking. These leaks can result in engine overheating issues. Water pump leaks also affect system pressure, which can result in coolant supply inadequacies.

How much does it cost to rebuild a Duramax diesel?

Depending on on the rebuilder, a Duramax engine replacement is going to cost at least $15,000. Depending on the year and other potential issues or wishes of the customer, you could expect a range likely between $15,000 and $25,000 for Duramax engine replacement.

What's better Duramax or Power Stroke?

Both the Ram's Cummins (seen above) and Ford's Power Stroke can pull over that amount, but the Duramax lags with a total towing capacity of 23,300. The Power Stroke wins here again with a total towing amount of 34,000 pounds versus Ram's 31,210 pounds.

Which turbo diesel is best?

What is the strongest diesel engine?

This jaw-dropper is the Wärtsilä RT-flex96C, the world's largest and most powerful diesel engine. Built in Finland, the RT-flex96C's fourteen cylinders can generate 107,389HP with more than 7,000,000Nm of torque — that's enough to power an entire suburban town.