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…