The 8C 2900A was shown to the public at the 1935 London Motor Show and was advertised for sale there. The engine, with a compression ratio of 6.5:1 and power output of 220 bhp (160 kW) at 5300 rpm, was detuned from the Grand Prix racing version. The 6C 2300 was produced in 760 copies before a revised model, called the 6C 2300 B was presented. This version has completely newly designed chassis, with independent front suspension, rear swing axle, and hydraulic brakes.

6C 2300B Gran Turismo

Coupé Aerodynamico (36?) (Pescara?)

8 C 2300 (?) Coupé Aerodynamico

8C

Tazio Nuvolari won the 1935 German GP at the Nürburgring at the wheel of a 3.2 l Tipo B against the more powerful Silver Arrows from Mercedes-Benz and Auto Union. Eight 3.8-litre versions, sharing no castings with the earlier blocks, were individually built for racing in five months, most being used in the Alfa Romeo Monoposto 8C 35 Type C, as raced by Scuderia Ferrari. (The P3 designation was dropped.) The 3.8 produced 330 bhp (246 kW) at 5500 rpm, and had 320 lb·ft (434 N·m) from 900 rpm to 5500 rpm. It had 15.5-inch drum brakes all round, using Pirelli 5.25 or 5.50 x 19 tyres at the front and 7.00 or 7.50 x 19 tyres at the rear.
In 1935, to compete with Mercedes Benz and Auto Union, Enzo Ferrari (Race team manager) and Luigi Bazzi (Designer) built a racer with two 3.2 (3.165-cc) engines, one in the front and one in the rear, giving 6.3 litres and 540 bhp (403 kW). The drivetrain layout was unusual. The two engines were connected by separate driveshaft to a gearbox with two input shafts, and two angled output shafts, so each of the rear wheels had its own driveshaft. It could never quite succeed against the Mercedes W25 B of Rudolf Caracciola, and was hard on fuel and tyres. The gain in speed was offset by increased pit times. On May 12, 1935, two were entered in the Tripoli Grand Prix driven by Nuvolari and Chiron who finished fourth and fifth. Chiron managed a second at the following 1935 Avus race. On June 16, 1935 Nuvolari drove a specially prepared Bimotore from Florence to Livorno and set a new speed record 364 km/h (226 mph) with an average speed of over 323 km/h (201 mph). After that it was sidelined in favour of the Tipo C.

2nd at Targa Florio: Louis Chiron in the Tipo B/P3.

Targa Florio.

Tazio Nuvolari in the Tipo B/P3 won the Bergamo Grand Prix (Scuderia Ferrari)

Tazio Nuvolari in the Alfa Romeo Tipo B/P3 at GP Pau (Scuderia Ferrari). Winner.

Tazio Nuvolari driving the 8C-35 3.8 (Scuderia Ferrari) came 2nd in Masaryk GP.

Louis Chiron in Tipo B/P3 3.2 (Scuderia Ferrari) finished 3rd in Masaryk GP.

8C 2300 (Luigi Chinetti / Jacques Gastaud) at Le Mans.

8C 2300 driven by Pierre-Louis Dreyfus and Henri Stoffel ttok 2nd place at 24h Le Mans.

 
8C 2300 (Lord Earl Howe / Brian Lewis) at Le Mans.

 
8C 2300 (Raymond Sommer / Raymond d´Edrez de Saugé) at Le Mans.

6C (Guy Don / Jean Desvignes) won in 1501-2000 cc class at Le Mans.

Jean Trévoux and Luigi Chinetti in Alfa Romeo 6C 2300 drove from Umea and finished in 87th place.