8C 2900

Alfa Romeo 8C 2900

​

The Alfa Romeo 8C was originally a range of Alfa Romeo road, race and sports cars of the 1930s. In 2004 Alfa Romeo revived the 8C name for a V8-engined concept car which made it into production for 2007, the 8C Competizione.

The 8C designates 8 cylinders, and originally a straight 8-cylinder engine. The Vittorio Jano designed 8C was Alfa Romeo's primary racing engine from its introduction in 1931 to its retirement in 1939. In addition to the two-seater sports cars it was used in the world's first genuine single-seat Grand Prix racing car, the Monoposto 'Tipo B' - P3 from 1932 onwards. In its later development it powered such vehicles as the twin-engined 1935 6.3-litre Bimotore, the 1935 3.8-litre Monoposto 8C 35 Type C, and the Alfa Romeo 8C 2900B Mille Miglia Roadster. It also powered top-of-the-range coach-built production models, including a Touring Spider and Touring Berlinetta.

​

The 8C 2900 was designed to compete in sports car races in general and the Mille Miglia in particular. It used the 2.9 L version of the 8C engine and was based on the 8C 35 Grand Prix racing chassis. As such, it had an inline 8-cylinder 2.9-litre engine using two Roots type superchargers fed by two updraught Weber carburettors and fully independent suspension with Dubonnet-type trailing arm suspension with coil springs and hydraulic dampers at front and swing axles with a transverse leaf spring at the rear.

 

1936 Alfa Romeo 8C 2900A roadster.

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 a stated power output of 220 bhp (160 kW) at 5300 rpm, was detuned from the Grand Prix racing version. Ten 2900As were built, five in 1935 and five in 1936.

Scuderia Ferrari entered three 8C 2900As in the 1936 Mille Miglia and again in the 1937 Mille Miglia. In 1936 they finished in the top three positions, with Marquis Antonio Brivio winning, Giuseppe Farina finishing second, and Carlo Pintacuda finishing third. In 1937 they finished in the top two positions, with Pintacuda winning and Farina finishing second; the third 2900A, driven by Clemente Biondetti, did not finish. The 8C 2900A also won the 1936 Spa 24 Hours with Raymond Sommer and Francesco Severi.

​

A total of six of these road racers, later known as 8C 2900A, were constructed. Three of these were entered in the 1936 running of the Mille Miglia. The new cars were immediately successful and occupied the first three places at the finish with the Brivio and Ongaro driven 8C on top. A year later a second victory was scored. With the winning cars as a base, a road going customer version was constructed. Dubbed 8C 2900B, the road car featured a de-tuned engine, but other than that is very similar to the racer.

Two versions were available, the 2800 mm short wheelbase (Corto) and 3000 mm long wheelbase (Lungo) versions. Most of these were sent to Touring to be fitted with Berlinetta, Spyder and Roadster bodies. With its competition chassis and high top speed it was faster and quicker than anything its competition had to offer. Due to its high price, only a very few of these supercars were constructed (10 Lungo and 20 Corto chassis).

Being very similar to the competition 8C 2900A, it came as no surprise the 8C 2900B was used as a racer as well. To suit this purpose Alfa Romeo constructed a further 13 8C 2900B chassis fitted with the 220 bhp engine. Many of these were fitted with roadster bodies and were competed in road races like the Mille Miglia. After the two 8C 2900A victories in 1936 and 1937, another two victories were scored by the 8C 2900B in 1938 and 1947. No other Alfa Romeo has scored as many 'MM' victories as the 8C 2900.