PORSCHE CARRERA 911E FROM 1970 When the Porsche 911 (901) was launched, it was fitted with a 2 liter Flat 6 mounted under the rear hood. Its architecture, combined with air cooling2, will quickly give it a sound all of its own and which will greatly contribute to its image. After some notable developments, aimed above all at increasing power, torque and improving carburetion, Porsche is thoroughly revisiting its Flat to optimize it and give it more horsepower. Thus, the whole range will gain an additional 10 hp3. The type 901 5-speed manual transmission has a magnesium housing. As an option the buyer can opt for the Sportomatic semi-automatic transmission (Type 905) which operates as follows: the clutch pedal is removed in favor of sensors in the speed control, thus, each time the box shifts automatically.