Mar 18, 2021 · The Vortec 6.0 has 9 variations – the LQ4, LQ9, L76, L77, L96, L98, LY6, and the hybrid LFA and LZ1. The most sought-after engine versions are said to be the LQ4 and LY6. LQ4 – The LQ4 is a small block engine that was used in General Motors trucks between the years 1999 and 2007. It is also known as the Vortec 6000.. "/>
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