Is the LB7 better than the lly?

Is the LB7 better than the lly?

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.

What is the difference between LLY and LB7 Duramax?

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.

How much horsepower can a stock LLY Duramax handle?

This type of build is typically safe for the 650 to 700-rwhp range, which is as far as a lot of enthusiasts want to go anyway (financially speaking).

How much HP can a stock LB7 handle?

Max “reliable” HP I would go is 400rwhp. Anything from stock is a risk of breaking somthing. Ive seen rods bend before headgaskets blow. Generally, rods are good to 500-550, IMO, pretty much anything over 500 is taking a risk of bending.

How can you tell LB7 from lly?

If the 8th digit of your VIN number is a 1, then it is a LB7 Duramax (the early engine). If the 8th digit is a 2, then it is a LLY. In mid 2004, GM switched to this newer LLY engine.

Can you swap a LB7 with a lly?

—Yes, you can keep your existing LB7 transmission when swapping to a 2004.5-2005 LLY.

Is a LLY Duramax reliable?

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.

Is LB7 a good engine?

LB7 Duramax Reliability The LB7 is a great engine, when it is stock. The block and internals are plenty capable of lasting 350,000+ miles. Most of the injector issues and head gasket faults should be fixed in these trucks now given their age.

Does a LB7 Turbo have a silencer ring?

On a duramax turbo? Silencer ring does nothing. Because it doesnt exist. What you are probably looking at/mistaking for a “silencer ring” is the anti-surge lip of the inducer that is cast into the compressor housing.

Can you put a 6 speed Allison in a LB7?

The Sun Coast Allison 5-6 Speed Conversion for your 2001-2004 GM 6.6L Duramax LB7 converts your 5-Speed Allison A1000 Transmission into a 6-Speed like the later models. With the conversion, you can drop 325 engine rpm @ 75 mph with 3.73 gears….Additional information.