Which is better LB7 or lly?

The LB7 was the simplest in terms of emissions controls, while the LLY came with the largest turbocharger ever offered. The LML brought higher fuel pressure, cleaner emissions and nearly 400hp into the equation, while the current L5P upped the ante even further and has 600rwhp potential in ’17-newer GM trucks.

What’s the difference between LB7 and lly?

The LLY has variable vane turbo. Injectors are easier to access. The LB7 is easier to make more power. If you want to see what makes a Duramax better then a 6.0L ford go read on www.dieselstop.com at all the problems they are having after the 3rd year.

Is the LB7 reliable?

The LB7 is otherwise a very reliable engine. As such, many owners will go through the hassle of replacing some or all of the injectors in their ’01-to-’04 and 1/2 Duramax oil-burners with the idea that they’ll be keeping their trucks for another 100,000 or 200,000 miles.

Is the Duramax 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.

Do LLY have injector issues?

Thankfully, the LB7 injector problems were resolved, but some new problems revealed themselves. Some of these 6.6L LLY Duramax engine problems stem from the fact that it has significantly more horsepower and torque compared to the original Dmax. In fact, a number of other common 6.6L LLY Duramax problems exist.

Is LB7 a good motor?

Overall, the LB7 is a very reliable and efficient engine with exception to the injectors faults, but beyond that, the truck will only need basic maintenance and last for several hundred thousand miles.

What problems do the LLY Duramax have?

The most common issues LLY owners encounter include decreased fuel mileage, overheating and poor turbo response. These symptoms result from the inlet mouthpiece of the Garrett turbocharger having to fit into a smaller engine space.

Why do LLY head gaskets fail?

LLY Guy. The head gasket issue with the LLY is mainly linked to overheating engines and owners running hot tunes with too much boost. Kinda like the problem the LBZ’s have with cracking pistons running hot tunes. The LBZ mouthpiece and EGR blocker are not true fixes for chronic over heaters, the aux radiator is.