In 1967 the Alfa Romeo GTA SA debuted at the Geneva Motor Show.
Built by Autodelta, the 1,567 cc (1.6 L) Twin Cam engine was boosted by two superchargers driven by an engine-powered oil pump. Racing versions of the Giulia engine, including the engine used in the GTA, featured a cylinder head with two spark plugs per cylinder.
In Italian it is known as the "bialbero", and has also been nicknamed the "Nord" (North) engine in reference to its being built in Milan in the North of Italy and to distinguish it from the Alfa Romeo Boxer engine built in the South (Sud) for the Alfasud.The 2 litre engine was augmented by a KKK turbocharger blowing through a pair of Dell'Orto DHLA40H pressurised carburetors and produced 150 bhp (152 PS; 112 k W) in normal tune Alfa Romeo's Twin Spark technology used dual ignition to fire two spark plugs in the cylinder head of each piston bore and was first used in the A. Although developed from the Twin Cam, few if any parts are interchangeable between Twin Spark engines and Twin Cams.For instance, while Twin Cams have six oilways leading to the cylinder head the Twin Sparks only have two, the timing chain cover is narrowed and the included angle between the valves is down to 46°.I agreed to help the chair of the Italian Department at St.Mary’s College in Moraga Ca get some cars together for a car show to promote awareness of Italian culture.