Category: GMC

Overview & Design Features The GMC LB4 engine is a 4.3-liter (262 cubic inch) 90-degree V6 gasoline engine, a prominent member of General Motors’ Small-Block engine family. Introduced in 1985, the LB4 was a significant engine for GM, being one of the first production V6 engines to feature Throttle Body Injection (TBI) and serving as […]

Overview & Design Features The GMC LB4, often referenced alongside the Z79 RPO code for specific vehicle configurations, is a 4.3-liter (262 cubic inch) V6 internal combustion engine manufactured by General Motors. It stands as a significant derivative of the venerable Chevrolet small-block V8 architecture, effectively being a small-block V8 with the two front cylinders […]

Overview & Design Features The GMC LC9 is a 5.3-liter (325 cubic inch) naturally aspirated V8 engine, part of General Motors’ venerable Gen IV small-block engine family. Manufactured by General Motors, it represents a significant evolution in GM’s truck and SUV powertrain offerings, produced primarily between 2007 and 2013. Distinguished by its all-aluminum construction, the […]

Overview & Design Features The GMC LCV engine, officially designated as the LWN, is a 2.8-liter (2776 cc) inline four-cylinder, turbocharged diesel engine developed by General Motors. Introduced in the North American market for the 2016 model year, it marked a significant strategic move for GM, becoming the first small diesel option available in their […]

Overview & Design Features The GMC LE3 engine, commonly known within General Motors’ EcoTec3 family as the L84, represents a modern iteration of the brand’s long-standing small-block V8 architecture. Introduced for the 2021 model year, this naturally aspirated, 6.2-liter (6162 cc) V8 powerplant is a robust and performance-oriented engine, designed to deliver significant power and […]

Overview & Design Features The GMC LE4 designation typically refers to a specific application of General Motors’ 2.4-liter (2384cc) Ecotec inline-four engine, a powerplant predominantly found in various GMC models. Part of the robust Ecotec family, the LE4 variant was engineered for a balance of fuel efficiency, emissions compliance, and adequate power delivery, making it […]

Overview & Design Features The GMC LE8 engine, widely recognized as the Vortec 5700 L31, is a naturally aspirated 5.7-liter (350 cubic inch) V8 gasoline engine. Manufactured by General Motors, it represents the final evolution of the small-block Gen I Chevrolet V8 architecture before the widespread adoption of the Gen III LS series. Introduced in […]

Overview & Design Features The GMC LF9 engine is a naturally aspirated 6.2-liter (6162 cc) V8 powerplant, part of General Motors’ Gen IV small-block engine family. Engineered for robust performance and towing capabilities, this engine was primarily deployed in large SUVs and pickup trucks requiring substantial power and torque. The LF9 variant is specifically distinguished […]

Overview & Design Features The GMC LFW is a 3.6-liter (3564 cc) naturally aspirated V6 gasoline engine, a prominent member of General Motors’ High Feature (HFV6) engine family. Introduced as a refined successor, it builds upon the proven architecture of its predecessors while incorporating advancements aimed at improving efficiency, emissions, and performance. Its development lineage […]

Overview & Design Features The GMC LFX is a member of General Motors’ High Feature V6 engine family, specifically a third-generation evolution of this architecture. Introduced in 2012, this 3.6-liter (3564 cc) naturally aspirated V6 engine was engineered to deliver a significant increase in power and fuel efficiency compared to its predecessors, the LLT and […]