How much HP can a 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 I get more horsepower out of my LB7?
If you want to improve performance, an aftermarket cold air intake can provide pretty solid gains for a cheap price. Aftermarket cold air intakes like the LB7 Duramax Banks Power Ram Air System provide the engine with cooler, denser air which results in more power.
Can you bulletproof a LB7?
Unfortunately there is no way to bulletproof these injectors. Between the voltage going to them, and the fuel quality being so inconsistent, air, water, and debris the gets through the system, and how the truck is used all makes a huge difference in how long the injectors last… Plus what cores you get from reman set.
How many miles will a LB7 last?
As we said earlier, the LB7 powered HD Sierras and Silverado’s are very reliable, and many you’ll find on the market have well over 300,000 miles on the original engine.
Is the LB7 a good motor?
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 2004 LB7 have EGR?
My ’04 LB7 has no Cat or EGR.
Is the LB7 the fastest Duramax?
The Duramax That Defies All Logic Unbelievably, Buddy campaigns a bone-stock, 300,000-mile LB7 Duramax. And being that his truck has been as quick as 5.73 in the past, he lays claim to the fastest stock engine LB7 Duramax in the world. No hard-part changes have been made. Even the factory head bolts are still intact!
What problems do LB7 Duramax have?
One of the most common LB7 Duramax problems is leaking O-rings on the Fuel Filter Housing. As these trucks continue to get older, the original o-rings can deteriorate over time. They’re also susceptible to normal wear and tear.