Zanussi Fontebasso Sport: A Handbuilt 1948 Italian Barchetta with Racing Roots
Featherweight Racer - In the years immediately following World War II, Italy’s automotive landscape was driven as much by creativity as by necessity. Materials were scarce, budgets were tight, and yet the passion for racing never faded. Small workshops and ambitious engineers began transforming humble road cars into lightweight competition machines, often crafted almost entirely by hand. Out of this inventive environment emerged the Zanussi Fontebasso Sport, a rare Italian barchetta built in 1948 that perfectly captures the spirit of postwar ingenuity and grassroots motorsport.
The 1948 Zanussi Fontebasso Sport, a rare Italian barchetta built in 1948 that perfectly captures the spirit of postwar ingenuity and grassroots motorsport. (Picture from: Carrozzieri-Italiani)
The project was developed through the collaboration between engineer Fioravante Zanussi and racing driver Antonio Fontebasso, combining technical ambition with a driver’s practical understanding of competition needs. Th, ir approach followed a common Italian tradition of the era: start with a simple mechanical base and transform it into something far more specialized. In this case, the foundation came from the compact Fiat 500B Topolino chassis, which was reinforced and adapted to handle stronger performance components. The car’s distinctive aluminum bodywork was crafted by Carrozzeria Vendrame in Mareno di Piave, a coachbuilder known for shaping lightweight competition bodies for small displacement sports cars.
The 1948 Zanussi Fontebasso Sport was built on a reinforced Fiat 500B Topolino chassis and featured distinctive aluminum bodywork crafted by Carrozzeria Vendrame in Mareno di Piave. (Picture from: Carrozzieri-Italiani)
Mechanically, the Zanussi Fontebasso Sportbegan life with a modified engine prepared by Siata, based on the Topolino’s tiny 569 cc inline-four. Equipped with an aluminum performance cylinder head and twin carburetors, the engine produced an estimated 30 to 35 horsepower—an impressive figure for such a small displacement at the time. Later, the car received a more powerful upgrade: a 750 cc engine sourced fromthe Lancia Ardea. This unit delivered around 50 horsepower at 5,000 rpm, sending power to the rear wheels through a four-speed manual gearbox. The suspension combined independent front transverse leaf springs with a rear live axle supported by semi-elliptic springs, while drum brakes were installed on all four wheels to manage the car’s modest but lively performance.
The 1948 Zanussi Fontebasso Sport features a minimalist racing cockpit with a large three-spoke steering wheel, simple round gauges, and brown leather bucket seats focused purely on driving performance. (Picture from: Carrozzieri-Italiani)
Visually, the car embraced the minimalist philosophy typical of postwar Italian sports racers. Its hand-formed aluminum panels were mounted over a tubular structure, resulting in a remarkably low weight of roughly 480 kilograms. The design featured open cycle fenders, a sharply cut-down windscreen, and an exposed external fuel filler, all leading toward a slender, tapering rear end that defined the classic barchetta silhouette. The emphasis on a low frontal area and reduced mechanical resistance reflected the racing priorities of the period—simplicity, lightness, and efficiency often mattered more than raw horsepower.
The 1948 Zanussi Fontebasso Sport embraced the minimalist philosophy of postwar Italian sports racers, featuring hand-formed aluminum panels over a tubular structure and weighing just around 480 kilograms. (Picture from: Carrozzieri-Italiani)
Only three examples ofthe Zanussi Fontebasso Sportwere ever constructed, making it one of the rarer small-capacity Italian racing cars of its era. Just a single car is known to survive today, identified by chassis number 5500748. Originally owned and raced by Antonio Fontebasso alongside co-driver Diego Zanotto, it competed in the 1949 and 1950 editions of the Coppa d’Oro delle Dolomiti, a demanding mountain road race in northern Italy. | JW2iWQrNbgc |
Decades later, the same car was certified for participation in historic editions of the Mille Miglia, supported by documentation from FIA and ASI archives. As one of the few surviving examples of early postwar 750 cc racing craftsmanship, the Zanussi Fontebasso Sport remains a vivid reminder of a time when determination, ingenuity, and hand-built engineering defined the soul of Italian motorsport. *** [EKA | FROM VARIOUS SOURCES | CARROZZIERI-ITALIANI ]
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Zanussi Fontebasso Sport: A Handbuilt 1948 Italian Barchetta with Racing Roots
The project was developed through the collaboration between engineer Fioravante Zanussi and racing driver Antonio Fontebasso, combining technical ambition with a driver’s practical understanding of competition needs. Th, ir approach followed a common Italian tradition of the era: start with a simple mechanical base and transform it into something far more specialized. In this case, the foundation came from the compact Fiat 500B Topolino chassis, which was reinforced and adapted to handle stronger performance components. The car’s distinctive aluminum bodywork was crafted by Carrozzeria Vendrame in Mareno di Piave, a coachbuilder known for shaping lightweight competition bodies for small displacement sports cars. 
Decades later, the same car was certified for participation in historic editions of the Mille Miglia, supported by documentation from FIA and ASI archives. As one of the few surviving examples of early postwar 750 cc racing craftsmanship, the Zanussi Fontebasso Sport remains a vivid reminder of a time when determination, ingenuity, and hand-built engineering defined the soul of Italian motorsport. *** [EKA | FROM VARIOUS SOURCES | CARROZZIERI-ITALIANI ]
