How much HP can a LB7 handle?
550 to 600 hp
Couple that with a weaker connecting rod and you can draw a pretty strong conclusion as to why the LB7 rods fail in the 550 to 600 hp (1,100 to 1,200 lb-ft.) range. While we tend to talk in terms of horsepower, it’s the torque of these engines that does all the damage.
What year LB7 is the best?
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.
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?
Miscellaneous Parts. 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 an LB7 a good motor?
Is The Lb7 A Good Motor? In a stock engine, the LB7 is very reliable. With enough power and good materials, you can last over 350,000 miles with your block and internals. These trucks are now three or four decades old and have most injector issues, head gasket problems, and clutch problems.
Is LB7 a good motor?
As the original Duramax model, the LB7 is still extremely popular with diesel enthusiasts due to its lack of emissions control parts. In general, it’s a very durable and reliable engine.
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.
Is LB7 Duramax good?
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.
Can you sleeve a Duramax?
Registered. They can all be sleeved.
How to check bad LB7 Duramax fuel injectors?
Bosch Automotive LB7 Genuine Replacement Injector. Get this fuel injector replaced for 2001-2004.5 Duramax.
What is the best Duramax engine?
– Power: 310 HP at 3,000 RPM – Torque: 605 lb-ft at 1,600 RPM – Block: cast gray iron – Head: cast aluminum – Compression ratio: 17.5:1 – Valvetrain: OHV (overhead valve), 4 valves per cylinder
How to overhaul Duramax LB7 injectors?
– Keep your fuel system clean. A clean fuel system will decrease dust and grime build up in your injectors. Making them last longer. – Buy good fuel. Cheap fuels can damage your injectors. Shortening their life span. – Use injector cleaners. Fuel additives are usually not recommended. – Avoid fueling from unreliable sources.
How to get 30+ mpg with a Duramax engine?
the best way to gain 30 mpg is when the engine is cruising, they need to shut off 4 of the cylinders so its a 4 cylinder running, that will dramatically save fuel and probably push it to 40 mpg, but using that feature will only work when driving empty, if you were towing, you probably could use 6 out 8 cylinders to tow.