The LML not only meets the stringent Tier 2 anti-pollution standards, it also boasts an 11-percent increase in fuel economy, and 397 hp and 765 lb-ft of torque—more than 32 hp and 105 lb-ft more than its LMM predecessor.
Is the LML the best Duramax?
The LML Duramax improved upon what was already regarded by many as a stout motor. However, GM decided to go from better (the LBZ/LMM) to best, the LML. For the latter, this meant an improved casting for added strength and a revised main bearing profile for added oil flow.
Is the LMM Duramax a good engine?
LMM Reliability
Engine-wise, there are no major issues with the LMM as it was practically the same as the LBZ. With that said, the overall reliability of the truck it was installed in could be regarded as a step back due to the problems associated with the DPF and it took a few years to iron them out.
What year LMM Duramax is best?
Some engines are more popular than others. For example, the pre-emissions Duramax engines made between 2001 and 2007 are highly sought-after for superior reliability. On the other hand, the more modern engines add more horsepower, torque, and upgrade capability with Duramax performance parts.
How much horsepower does a LMM have compared to a LML? – Related Questions
How long do injectors last on LMM?
Some can be expected to last between 80,000 and 100,000 miles, while the best fuel injectors can last as long as you have your vehicle. You can expect your fuel injectors to last longer with a little care and attention.
How many miles is a Duramax LMM good for?
A poorly-maintained engine can quickly fall into disrepair before it even reaches the 100,000-mile mark while a well-maintained Duramax pickup truck should last 400,000 or even 500,000 miles.
What was the last year of the LMM Duramax?
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.
How much HP can a stock LMM handle?
A Dyno-Proven, 500-Plus HP
In best-case scenarios, the LMM’s stock turbo, injectors and CP3 high-pressure fuel pump can support 530 to 540rwhp.
What years are the best Duramax motors?
2006-2007 2500 & 3500
With arguably the best plug-and-play horsepower potential (on top of 360 horsepower being offered right out of the box), the last of the (essentially*) emissions-free engines, and a stronger, six-speed Allison to back them, the LBZ Duramax has a lot going for it.
How much horsepower does a 2009 LMM Duramax have?
This Fire-Breathing LMM Makes 700 HP With A Stock Long-Block.
Does the LMM Duramax have a CP3?
2006 – 2010 Chevy GMC 6.6L Duramax LBZ LMM This kit includes a new stock CP3 Pump.
Does LMM Duramax need a lift pump?
Either way, a lift pump is required to make anything over *500 RWHP with your LML. The reality is that the pump simply can’t keep up without a lift pump if you want more power than that. From our testing, we have found the peak horsepower with a stock turbo is 520 RWHP if you want to keep your LML reliable.
Does the LMM have a 9th injector?
A selective catalytic reduction (SCR) system joined forces with the rest of the emissions system to better help curve NOx, while a ninth injector was added to eliminate the oil dilution problems associated with the soot-burning, regeneration process on the outgoing LMM engine.
What size turbo is on a LMM?
61mm 10 blade turbine. Electronics included – vane position sensor and vane solenoid.
How often should LMM Regen?
On an LML the active regen process initiates once 42 grams of soot have collected in the DPF or after 700 miles without active regen (whichever comes first).
At what mileage does LML CP4 fail?
The result is the formation of air bubbles inside the CP4. Air in the pump means that metal rubs against metal, causing accelerated wear. This will eventually cause the CP4 to fail, often around 100,000 miles.
How common is CP4 pump failure?
The Bosch CP4 fuel pump has an unusually high failure rate in the U.S., upwards of 7%, when compared to 1% failure rate in Europe.
What year did Duramax stop using CP4?
The CP4 was standard equipment on the 2011-present Ford 6.7L Powerstroke. From 2011-2016 GM also used the CP4 in the LML & LGH Duramax engines, switching to the Denso HP4 in 2017 when the L5P was released.