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, and …

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 Headers An …

LS Family , Gen. 3, 6.0L, Iron Block, Truck Engines

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 world.

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 wondering if it …

Most GM transmissions will bolt on without an issue. The problem with most LS engines is the short crankshaft. The torque converter pilot is too short to engage the back of the crank. The early LQ4 …

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**

Jan 17, 2010 · 2003 LQ4 specs PDF A technical documentation that provides detailed engineering specifications for the 2003 Chevrolet Chevy C Silverado 2WD, LQ4 VIN U engine. It includes metrics …

May 23, 2017 · Carbureted LSX Forum - lq4 408 build questions - hey guys, what would be the best 408 ls stroker kit to go on my lq4? also what cam heads? its going in a 1990 s10 with a 4L80e being built, …

Dec 4, 2025 · Generation III Internal Engine - Lq4 engine - Hi, l have recently purchased a LQ4 6.0 truck motor. I was going to change the crank rods and pistons for twin turbo use. I have contacted some …