. . . . . . "The engine family known as the Quad 4 was debuted to the public in the spring of 1987. The Quad 4 was a 2,260.5 cc (2.2605 L; 137.94 cu in) DOHC inline 4-cylinder produced by General Motors' Oldsmobile division. Early television ads touting the new engine's abilities showed video of a limited edition Oldsmobile Calais (called the \"GMO Quad 4\") racing around city streets.The Quad 4 name is derived from the engine's four-valve, four-cylinder layout."@en . "Quad 4"@en . . . "2002Z"^^ . . "1987Z"^^ .