Is a 2001 Duramax a good engine?
Introduced in 2001, the LB7 is the OG 6.6L Duramax. This engine is the base platform that today’s 6.6L L5P Duramax is built off of. Spanning six different variations and nearly 20 years of production, the LB7 has certainly proved to be a reliable and durable platform. 2001 year models were pushing 235hp and 500lb-ft.
How much horsepower does a 2001 6.6 Duramax have?
The LB7 Duramax diesel is a direct-injected, turbocharged, intercooled, four-valve-per-cylinder V-8 that produces 300 hp and 560 lb-ft of torque. Starting from a blank sheet of paper, the 6.6L Duramax is recognized to date as the fastest diesel development program in the world.
Is LB7 a good engine?
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 is bad about LB7 Duramax?
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.
When did GM change the Duramax engine to aluminum?
The change from cast-iron to aluminum didn’t affect the engine’s performance. Aluminum heads are now used in several other engines because they are lighter and just as durable. In 2004, GM replaced the 6.6L Duramax LB7 with the Duramax LLY to comply with emissions standards.
What was the best year for the Duramax?
Well, for starters, even in its best year, 2004, the LB7 Duramax can hardly compete with today’s modern diesels. They offer twice the horsepower, torque, and tow capacity of the original Duramax. It doesn’t have to stay that way though.
What kind of exhaust system does a Duramax have?
The AFE 49-04060NM-1 ATLAS 5″ Downpipe-Back Exhaust System for your 2002-2004 GM 6.6L Duramax features a 5″ mandrel-bent aluminized steel tubing for maximum flow increased horsepower, increased torque and lower EGTs.
When did GM replace the LB7 engine with Duramax LLY?
In 2004, GM replaced the 6.6L Duramax LB7 with the Duramax LLY to comply with emissions standards. The tuners in this review will only cover 6.6L Duramax LB7 engines found in: