Early Development
1997
LS1 Introduced: The LS engine family debuts with the LS1, offering significant advancement with its all-aluminum construction and use in the Chevrolet Corvette.
2001
LS6 Introduced: The higher-performance LS6 variant is released, enhancing the Corvette Z06 model with improved heads, camshaft, and higher compression ratio.
Gen IV
2005
Gen IV Introduction: The Gen IV branch of the LS family debuts with improvements in casting provisions for displacement on demand, among other technological advancements.
2006
LSX Launched: GM introduces the LSX cast-iron racing block based on the LS7 model at the 2006 Specialty Equipment Market Association (SEMA) show, featuring all-forged engine components.
2008
LS3 Launch: The LS3 engine is introduced with the Corvette, featuring a 6.2L engine size, producing up to 436 horsepower with specific enhancements, representing a significant performance upgrade from the LS2.
2009
LSA and LS9 Debut: The supercharged LSA and LS9 engines are launched, delivering up to 556 horsepower with the LSA and over 630 horsepower for the LS9. These engines power high-performance vehicles such as the Cadillac CTS-V and the Corvette ZR1.
2009
LS3 E-ROD Debut: Chevrolet Performance unveils the new emissions-compliant LS3 E-Rod at the 2009 SEMA show, marking the first crate engine street-legal in all 50 states.
Gen V
2013
LT1 Revival: The LT1 marks a renewed naming convention with the introduction of the Gen V engine class. These models feature advanced tech like direct fuel injection and improved fuel management systems.
2014
LT4 Introduction: The supercharged LT4 engine debuts, enhancing performance with significant boosts in power.
2020
L8T Introduction: Boasting the largest displacement in the LT family at 6.6L, the L8T crate engine offers direct fuel injection and a high-strength cast-iron block with great low-rpm torque.
Ongoing Development
Generation VI:
Chevrolet Performance announces in January 2023 that plans for a sixth small-block generation were in place, with new concepts being actively developed.
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