<P> The LS based GM small - block engine is the primary V - 8 used in General Motors ' line of rear - wheel - drive cars and trucks . Introduced in January 1995 , it is a `` clean sheet '' design with only rod bearings and bore spacing in common with the longstanding Chevrolet small block V8 that preceded it as the basis for GM small - block V8s . The basic LS variations use cast iron blocks , while performance editions are all aluminium with cast iron cylinder liners . </P>
<P> The LS based GM small - block engine is the primary V - 8 used in General Motors ' line of rear - wheel - drive cars and trucks . Introduced in January 1995 , it is a `` clean sheet '' design with only rod bearings and bore spacing in common with the longstanding Chevrolet small block V8 that preceded it as the basis for GM small - block V8s . The basic LS variations use cast iron blocks , while performance editions are all aluminium with cast iron cylinder liners . </P>
what year did the ls engines come into production
what year did the ls engines come into production
January 1995
January 1995