The Duramax LB7 engine was introduced in 2001 and is the first variant of the 6.6L Duramax diesel engine family. We have insightful LB7 articles including the most common Duramax LB7 engine problems and the best 6.6 diesel performance mods. More detailed, knowledgeable LB7 content to come in the near future.
The Duramax LB7 V8 engine is one of the most popular diesel platforms today. The LB7 lasted from 2001–2004, and was the first Duramax engine GMC released. From the factory, the Duramax LB7 produced 235–300 horsepower and a whopping 500–520 lb-ft of torque. While these were substantial power figures in the early-2000s when GM created…
The Duramax LB7 was the first engine released under the new 6.6L Duramax platform. The LB7 was considered a strong and stout engine for the time, producing 235hp and 500lb-ft. of torque which was upgraded to 300hp and 520lb-ft. of torque in 2004. However, the LB7 produces about half the power as the diesels of…
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….
