With the Targa roof, the Silhouette - which is the evolution of the Urraco – proposed an alternative open version with the intention of winning over the difficult United States market. The engine, now perfected, which had four overhead camshafts in the 3-litre version, allowed a maximum speed of 260 km/h. And despite this, after two prototypes, only 53 Silhouettes were produced, the last one being used and tested as the Jalpa prototype.
Lamborghini Silhouette made its world debut at the 1976 Geneva Auto Show. It was the first open production model for Lamborghini featuring a 2+ 2 configuration and a Targa roof. The car was named Silhouette in recognition of then current FIA Group 5 regulations. Even if the public received very well the new model, Lamborghini could never sold it on the North American market due to homologation issues.