LB7: 2001 – 2004
It’s still highly popular in the used market. Other than LB7 engines sold in California, these engines didn’t include any emission control devices. The lack of these extra emissions parts made the engines highly reliable.
What year is the most reliable Duramax?
LBZ: 2006 – 2007
As mentioned in our look at the best Duramax engine, the LBZ is generally accepted as the greatest Duramax engine ever built. It gets this designation for a few reasons: Lack of emissions control parts. GM worked out the bugs of previous engines.
Is LB7 Duramax reliable?
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.
How long will a LB7 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 year LB7 is the best? – Related Questions
What is so special about the LB7 Duramax?
The internal components on the LB7 were designed to be lightweight, yet extremely durable. Cast in 4340, the crankshaft was treated with a process to increase durability under extreme heat. Lightweight cast – aluminum pistons (among the lightest ever put into a Duramax engine).
What Duramax is better LBZ or LB7?
If It’s Our Money, We’re Going LBZ
It improved on the LB7 and LLY platforms with a more robust block, stouter connecting rods, higher pressure injection system (26,000 psi vs. 23,000 psi) and came bolted to a stronger, six-speed Allison automatic transmission.
How many miles do LB7 injectors last?
The biggest issue with ’01-to-’04 and 1/2 LB7 engines is their fuel injectors’ propensity to fail, typically before an engine reaches 100,000 miles. When an LB7 injector fails, it can dump an enormous amount of excess fuel into the engine, often at very low speeds (such as idle, for example).
Is 200 000 miles alot for a Duramax?
Even when used extensively for towing and hauling, Powerstroke, Cummins and Duramax diesel trucks typically last well beyond 100,000 miles. Because of that, it’s not uncommon to see diesel pickups with 200,000 and even 300,000 miles commanding good resale values on the used truck market.
How long does a LB7 CP3 last?
The Bosch CP3, used on the ’01-to-’10 Duramax and ’03-to-current Cummins engines, is known to last 250,000 miles or more before needing to be replaced.
What years should you stay away from a Duramax?
The Duramax has a long history. We recommend avoiding any GM vehicle equipped with the 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, and 2010 Duramax engines. In short, the newer model years show improved performance.
What year Duramax has head gasket problems?
These are both relatively common problems you might expect to deal with on the 2001-2004 LB7 Duramax, but you can rest a bit easier knowing the aftermarket has had a decade to develop and perfect the parts you need to correct it.
What problems do LB7 Duramax have?
The LB7 Duramax is more prone to head gasket failures than future generations of the Duramax engine. Despite this, head gasket failure usually doesn’t occur until over 100,000 miles, so it’s not nearly as common as it is in 6.0L Powerstroke engines. LB7 Duramax head gasket problems can occur for a couple of reasons.
Why do LB7 injectors fail?
LB7 injectors using Bosch common rail technology operate at very high pressure. Poor quality fuel will cause premature injector failure.
How long should I let my LB7 warm up?
As a general rule of thumb, if it is below zero degrees Fahrenheit, you should allow your engine up to seven minutes to warm up. If the temperature is between zero and fifty degrees, the warm-up period should be three to five minutes. Over fifty degrees will only require one or two minutes to warm up.
How much does it cost to rebuild LB7 injectors?
Complete Kit $1499.99 – $1699.99. The kit includes: Full set of Remanufactured LB7 injectors.
How much HP can a LB7 make?
5.9-Second Diesels—A Stock LB7 Duramax Making 1,200HP, A Big Single Turbo’d 5.9L Cummins And A Big Boost ’07 Silverado.