The 348, badged 348 TB for the coupé (Transversale Berlinetta) and 348 TS (Transversale Spider) and the 348 SP (Spider, or Convertible) versions, featured a naturally aspirated 3.4-litre version of the quad-cam, four-valve-per-cylinder V8 engine. As with its predecessors, the model number was derived from this configuration, with the first two digits being the displacement of the engine and the third being the number of cylinders. The engine, which produced 300 hp (304 PS; 224 kW), was mounted longitudinally and coupled to a transverse manual gearbox, like the Mondial T with which the 348 shared many components. The "T" in the model name 348 TB and TS refers to the transverse position of the gearbox. Overall, 2,895 examples of the 348 TB and 4,230 of the 348 TS were produced.