Introduced at the Paris Motor Show in October 1966, the Ferrari 275 GTB/4 (or 4-cam) used the same basic platform as the earlier 275 GTB with mostly mechanical improvements. The Scaglietti-built bodywork was largely the same as the series II "long-nose" 275 GTB, with the most visible difference being an added hood bulge with creased edges. The engine was the Tipo 226 3285.72 cc Colombo V12, derived from the earlier Tipo 213 275 engine with two valves per cylinder, but now upgraded with four overhead camshafts and six Weber 40 DCN carburetors as standard. This engine produced a claimed 300 hp (220 kW) and claimed a top speed of 268 km/h (166.5 mph).