LT1

LT1 is a designation used in multiple contexts, most prominently as an internal General Motors designation for a 5.7-liter V8 engine developed for performance applications in the early 1990s. The Chevrolet LT1 engine belongs to GM's Generation II small-block family and was introduced for the 1992 model year. It powered the Chevrolet Corvette (C4) and the F-body lineup, including the Camaro and Firebird, during the mid-1990s. The LT1 featured electronic fuel injection and a redesigned cylinder head and intake system that contributed to improved high-end performance over earlier small-block designs. It represented GM's transition toward higher-output V8s prior to the later LS-series introduction. Production of the LT1 for these platforms continued through the mid- to late-1990s, with different variants and refinements across model years. In automotive culture, LT1 is frequently cited as a notable example of GM's Gen II small-block development.

In other domains, LT1 is a generic alphanumeric designation used by various organizations to label products, projects, or components; there is no single, universal meaning for LT1 outside specific contexts. When encountered, LT1's meaning should be inferred from surrounding information such as industry, product family, or catalog references.