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What’S Better Lly Or Lbz? The 8 New Answer

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What'S Better Lly Or Lbz?
What’S Better Lly Or Lbz?

Why is LBZ better than lly?

The LBZ Duramax V-8 engine is more powerful than the LB7 and LLY with its 605 lb. ft torque at 1600 rpm and 310 bhp at 3000 rpm. LLY has two variants; one with a power output of 310 bhp at 3000 rpm and another 250 bhp at 3200 rpm. LB7 comes with a power output of 300 bhp at 3200 rpm.

Is an LLY as good as an LBZ?

Mechanically, the LBZ used the same Duramax parts as the LLY. However, the LBZ generated 360 horsepower over the LLY’s 310 horsepower. Torque increased as well, going from 605 pound-feet with the LLY to 650 with the LBZ.


TALKING DURTY: LLY VS LBZ

TALKING DURTY: LLY VS LBZ
TALKING DURTY: LLY VS LBZ

Images related to the topicTALKING DURTY: LLY VS LBZ

Talking Durty: Lly Vs Lbz
Talking Durty: Lly Vs Lbz

What is the difference between a LLY and LBZ?

The ’06 LLY is much quieter than the ’05. The ’06 LLY and LBZ have the same turbo (ask McRat, he put one on his ’05 LLY). It has the reduced compression, meaning that it has the LBZ pistons. If the LBZ piston has an increased wristpin diameter, then it stands to reason that the ’06 LLY also has the LBZ rods.

Is an lly a good engine?

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.

How much HP does a LLY Duramax have?

The 6.6 liter LLY Duramax V8 engine was introduced during the 2004 model year as a replacement to the LB7 Duramax V8. As such, it powered Chevrolet Silverado Heavy-Duty and GMC Sierra Heavy-Duty pickup trucks through 2006, making up to 310 horsepower and 605 pound-feet of torque. Displacement: 6.6L / 403 cu.

Which Duramax is the 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.

Are LLY and LBZ injectors the same?

yes they are the same, They use the same bosch controller, and injectors.


See some more details on the topic What’s better LLY or LBZ? here:


Which is better? LLY or LBZ????? | Diesel Place

the LBZ is the way to go. Upgrades were done in 06 to the D-max. The 06 LLY has the same mechanicals as the LBZ. I would go with an 06 either …

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lly /lbz whats better | Chevy and GMC Duramax Diesel Forum

Mechanically it is identical to the LBZ and is mated to the new 6 speed Allison transmission however it retained the LLY designation. The LBZ ( …

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L What? Determining Which Duramax Is Best | DrivingLine

The LB7 was the simplest in terms of emissions controls, while the LLY came with the largest turbocharger ever offered.

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LB7 Vs. LBZ Vs. LLY (With Comparison Chart) – AFE

Generally, LLY engines are more powerful than the LB7, which has a smaller power output of …

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Can you put a LBZ in a lly truck?

You can put a LBZ but it will not be a direct drop-in without any swapping. You will have to swap out the ECM, 6-speed transmission (05 has the 5 speed and the 06 has the 6 speed).

Are LBZ and LLY heads the same?

The 06 LLY is exactly the same as a LBZ, except it has a smaller tune.

How much power can a stock LLY handle?

Without engine work, the stock LLY can put out ~500rwhp.

How long do Duramax LLY injectors last?

Most well-maintained LLY injectors last between 150,000 to 200,000 miles.


06 LLY vs 06 LBZ – DT QA EP 1

06 LLY vs 06 LBZ – DT QA EP 1
06 LLY vs 06 LBZ – DT QA EP 1

Images related to the topic06 LLY vs 06 LBZ – DT QA EP 1

06 Lly Vs 06 Lbz - Dt QA Ep 1
06 Lly Vs 06 Lbz – Dt QA Ep 1

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.

Are LLY Duramax reliable?

Under the moniker “LLY” is the 2nd version of Duramax. LLY Duramax is an upgrade to an LB7 diesel truck. It is reliable, powerful, and does not exceed many of the emissions of modern L5P diesel trucks. There is no common injector failure issue among LLY Duramax trucks compared with LB7 trucks.

What year Duramax is most reliable?

LLY/LBZ from 2006 to 2007 is considered one of the most reliable and rugged engines from the pre-emission’s era. They are widely sought out for because of this and can be a great buy if you are looking for a Duramax engine of this time.

What does LLY mean for Duramax?

LLY doesnt stand for anything specific, its just the RPO (regular production order) code that means “Duramax diesel engine“.

What turbo came on the LLY Duramax?

With the release of the 2004.5 LLY 6.6L Duramax, came GM’s first Variable Turbo technology, produced by Garrett. We offer direct replacement turbos from Garrett, Industrial Injection, and BD Power.

How much HP does a LBZ Duramax have?

LBZ Duramax Specifications
Manufactured Years: 2006-2007
Fuel: Diesel
Fuel Tank Size: 34 Gallons
Max Engine Speed: 3,250 RPM
Horsepower: 360 horsepower
Dec 4, 2019

Is a 2006 Duramax a LBZ or lly?

The 2006 LLY (engine code “2”) debuted in the beginning of 2006 and ended production with the start of the 2006 calendar year. Mechanically it is identical to the LBZ and is mated to the new 6 speed Allison transmission however it retained the LLY designation.

How long will a LBZ Duramax last?

Overall, a properly cared for Duramax engine should last over 300,000 miles. However, consumers report having Duramax’s lasting in the 500,000-mile range!

What problems do LBZ Duramax have?

Duramax LBZ Common Engine Problems
  • Pump Rub & Transfer Case Failure: the transfer case inlcudes a gear pump inside of it that is controlled via the mainshaft. …
  • Pistons: while this is really on a problem for high-horsepower LBZ’s, the pistons are known to crack around 600rwhp and shouldn’t be pushed too far above that.

Duramax LB7, LLY, LBZ, LMM, LML, L5P Explained!

Duramax LB7, LLY, LBZ, LMM, LML, L5P Explained!
Duramax LB7, LLY, LBZ, LMM, LML, L5P Explained!

Images related to the topicDuramax LB7, LLY, LBZ, LMM, LML, L5P Explained!

Duramax Lb7, Lly, Lbz, Lmm, Lml, L5P Explained!
Duramax Lb7, Lly, Lbz, Lmm, Lml, L5P Explained!

What’s better LBZ or LB7?

The LB7 – stronger internals, injector issues, and 5 speed trans. The LLY – stronger internals, headgasket/overheating issues, but no injector issues, and 5 speed trans. The LBZ – weaker internals (pistons are weaker), but no injector/overheating/headgasket issues. Also get the 6 speed.

How much does it cost to replace Duramax injectors?

The total cost for Duramax injector replacement is $2,000 and $6,000. The labor costs associated with this job can range from $800-$1,500. Related repairs could be needed if you have driven for a long time with dirty fuel injectors.

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