The LQ9 was also known as the Vortec HO 6000 or the VortecMAX. For specific details about these engines, please follow the links below: Chevy LQ4 Engine Specs Chevy LQ9 Engine Specs …

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

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 …

Jan 23, 2013 · Generation III External Engine - LQ9 243/799 vs 821/823 heads? - I sort of asked this question in the wrong forum. I posted a question about my LQ9 build but placed it in Internal Engine …

LS Family: Gen. 4, 6.0L, Iron Block, Truck Engines LY6 The LY6 was introduced in 2007. It replaced the LQ4 and LQ9 as the Vortec 6000. Along with the LY2, LY5, and LMG, it was one of the first 4th …

Apr 6, 2025 · Generation III Internal Engine - 243 cylinder heads on a gen 3 lq9 - So I'm going to install new heads with a truck cam from btr, curious if you were to buy a set of 243s (or better choice?) …

Nov 6, 2014 · Who makes the BEST rebuild master kit. Something that comes with all the gaskets and rings, etc. for an LQ9 Another question... What's the best oem rods & pistons to use for for a budget …

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 …

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**

Oct 31, 2016 · Generation III Internal Engine - LQ9 6.0 with 243 heads build? - Looking to build a simple SBE LQ9 that I already have into a nice street/strip engine. Would like to make 550+HP with a set of …