LS Crate Engines | Small Block | Chevy Performance Parts
LS CRATE ENGINES. The engine family commonly called the LS series debuted in 1997. General Motors called it the GenIII SmallBlock, with the ironblock versions in trucks and the allaluminum LS1 introduced in the thennew C5 Corvette. GM has continued to refer to its modern V8 engine family as Gen III and Gen IV, but to the enthusiasts who ...