The P3 was a monoposto Grand Prix based on the 8C 2300 mechanics. The 8C name was given to a car bearing the 8-cylinder engine developed by Vittorio Jano. Jano had already developed the 1924 Alfa Romeo P2 to replace the over complicated and unsuccessful P1. The P3 continued Jano's development and used the 8C 2 x 4-cylinder blocks in line, with components from the 6C 1750 for a 2,645cc P3 racing car (Tipo A). The P3 was the first ever monoposto racer, but in 1934 body had to be made wider to comply with new regulations so the engine was enlarged to 2,905cc for the Tipo B. The engine had twin super-chargers, and a special model was made for the 1935 German Grand Prix with a 3,165cc engine; it won on the final lap after the leading Mercedes failed.
ab Alfa Romeo 8C 2600 1932 Monza grille
Alfa Romeo 8C 2600 1932 Monza - the shrouded grille was new for the Racing models and was conbtinued onto the P3
ac Alfa Romeo P3 Tipo B Don Lee grille
Alfa Romeo Tipo B P3 - grille
Alfa Romeo 8C 2600 1932 Monza front
Alfa Romeo 8C 2600 1932 Monza. Powered by 2,556 cc 8-cylinder engine designed by Vittorio Jano, and given a Roots-type Supercharger. The 'Monza' versions were on the shortest 104-inch wheelbase for racing and few were made
Alfa Romeo P3 Type B 1934 3200 front
Alfa Romeo P3 Type B 1934 3200. Developed by Vittorio Jano from the 8C 2300 model, but built as the first ever single seater racing car in 1932. For 1934 a wider Tipo B was brought out (some being modified 1933 cars). For the 1935 German Grand Prix the P3 was bored out to 3,165 cc and won on the final lap in a car entered by Scuderia Ferrari.
Alfa Romeo P3 Type B 1934 3200 racer3
Alfa Romeo P3 1934, powered by 3,200cc supercharged engine
Alfa Romeo Tipo B P3 1933 front
Alfa Romeo Tipo B P3 1933
s Alfa Romeo P3 Tipo B Don Lee side
Alfa Romeo Tipo B P3. Designed by Vittorio Jano, the Tipo B replaced the Tipo A with a wider body required by new regs. The engine was derived from the 2336cc 8-cylinder of the Alfa Romeo 8C 2300, but enlarged to 2645cc equipped with two small blowers. The Done Lee Special was already a multiple race winner in Europe when it was bought and taken to America in 1945 by America's leading Cadillac dealer; Don Lee