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

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 …

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 29, 2025 · Generation III Internal Engine - Lq4 408 stroker build parts list - just trying to piece together a build list for a 408 stroker build looking for advice on what I?m missing and what pistons I …

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**

Gen III Gen IV Casting Numbers

LQ4 and LQ9 are Gen3 engines, not Gen4 (like the LS2, LS3, L76), due to the location of the cam sensor and knock sensors. LQ4 debuted in 1999 Displacement was/is 6.0L 1999-2000 had iron …

Jun 6, 2016 · Forced Induction - 04 LQ4 Mighty Mouse PCV Catch Can Install - Hey guys, I thought I'd make a short write up on my install of my catch can I needed on my 6.0 to stop the smoke under …