Duramax LB7 Cold Air Intake Ultimate Guide
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Duramax LB7 Cold Air Intake Ultimate Guide

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…

Best 8.1 Vortec Upgrades and Mods
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Best 8.1 Vortec Upgrades and Mods

First released in 2001, the 8.1L Vortec – or Vortec 8100 – was one of the top platforms for GM truck owners for several years. Mostly used inside the Silverado/Sierra and Suburban/Yukon, the Vortec 8100 was a top engine for heavy duty trucks. It makes a healthy 320–340 horsepower and 440–455 lb-ft of torque depending…

LMM Duramax Tuner Guide
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LMM Duramax Tuner Guide

From 2007–2010, the General Motors/Chevrolet Duramax LMM was one of the top V8 diesel engines on the market. Powering heavy duty trucks, SUVs, and vans, the Duramax LMM is essentially a Duramax LBZ but with some updated emissions equipment. Depending on the year and model, the Duramax LMM makes 250–365 horsepower and 460–660 lb-ft of…

Ultimate 5.3 Vortec Engine Guide
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Ultimate 5.3 Vortec Engine Guide

General Motors/Chevrolet produced the Vortec 5300 V8 engine for nearly two decades from 1999–2014. It spanned two generations of their small block V8, and was finally succeeded by the 5th Generation EcoTec3. Known for its reliability, performance, and stout design, the 5.3 Vortec engine was hugely successful for GM/Chevy. Though it was discontinued nearly a…