Intro to the LQ4 and LQ9 LS Family: Gen. 3, 6.0L, Iron Block, Truck Engines LQ4 The LQ4 was introduced in 1999 as one of the first LS truck engines. It was available in GM pickups, vans, …

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Upgrading the LQ4 and LQ9 Engines Getting more power out of my engine On a stock engine, the following upgrades can improve performance and fuel economy: A Cold Air Intake Kit …

Nov 6, 2012 · Generation III Internal Engine - 450+ hp LQ4 Build on a budget - I know this has been covered before and I know this is probably getting old. But I'm new to the engine building …

Jan 7, 2017 · It appears that most (all?) LQ4 6.0l Vortec truck engine have the long crank; there are reports that some 4.8l Vortec engines also have the long crank. Obviously these long …

Nov 2, 2011 · Generation III Internal Engine - How much to you gain putting 243 heads on a lq4 - I don't know if it is even worth it but I am going to change the cam in my 2007 lq4 and was …

Mar 5, 2010 · The truck ignition coil upgrade: Many GM trucks come with a different, more powerful ignition coil. These coils have round bodies and an aluminum heat sink on one end. …

Jul 26, 2025 · Conversions & Swaps - LQ4 into Volvo 240: Intake Manifold Questions - Hi fellas, longtime lurker first time poster. Recently my dad gave me the old family station wagon (93 …

Apr 8, 2016 · Camaro and Firebird: Guide for Budget Engine Swap Sticking with tradition, GM introduced the Gen III line of V8 engines that share similar components and dimensions to …

Gen. 3, Iron Block, LS Engines The following specs apply to RPO codes: LR4 LM7 L59 LQ4 LQ9 **Click the blue links in the table for more detailed information**