According to Autoblog ”When the Maserati GranTurismo made its debut at the 2007 Geneva Motor Show, it came equipped with a 400-horsepower, 4.2-liter V8 made by Ferrari. A year later, Maserati shoehorned a larger 4.7-liter unit under the GT’s hood, boasting 434 horsepower. But when the GranCabrio – known as the GranTurismo Convertible in the United States – hit the market, the Modense automaker opted to skip the smaller engine and go straight for the 4.7 from the S. Now the Trident marque is doing one better with the new GranCabrio Sport.Due to be unveiled in Geneva, the top-spec four-seat convertible packs an upgraded version of the 4.7-liter V8. 450 horsepower are driven through the same ZF six-speed auto as the standard model, but re-calibrated with the MC Auto Shift programming for quicker response”.
Source : Autoblog