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Bizzarrini Utes. p. A. was an Italian automotive manufacturer inside 1960s founded by ex - Alfa Romeo, Ferrari and ISO professional, Giotto Bizzarrini. The company built only a few highly developed and advanced sport and racing vehicles before failing in 1969. Notable models include the particular 5300 GT Strada and the P538S.Originally Prototipi Bizzarrini utes. r. l., the name was improved to Bizzarrini S. p. A. in 1966. The Bizzarrini marque have been revived with quite a few concept cars in the 2000s.Giotto Bizzarrini was created in Livorno, Italy in 1926. His father was any rich landowner who originated a family with sturdy roots in Tuscany plus the city of Livorno. His grandfather, also named Giotto Bizzarrini, was a biologist who had caused Guglielmo Marconi on the inventions, especially the radio, following which one in the Livorno Library sections seemed to be named The Bizzarrini Library.Bizzarrini graduated as an engineer in the University of Pisa throughout 1953. He taught briefly prior to joining Alfa Romeo within 1954. He worked for Alfa Romeo through 1954 to 1957. He began working regarding Ferrari in 1957, eventually becoming controller connected with experimental, Sports and GT automobile development. He worked at Ferrari being a developer, designer, test driver, and chief engineer for five years. His developments there bundled the Ferrari 250 TR, the Ferrari 250 GT SWB (Quick Wheelbase Berlinetta or Berlinetta Passo Corto), and the 1962 Ferrari three hundred GTO.

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Bizzarrini ended up being fired by Ferrari through the "palace revolt" of 1961. He became part involving Automobili Turismo e Game (ATS)), a company started from the ex-Ferrari engineers to create a Formula 1 single seater plus a GT sport car, the A. T. S. Serenissima.One of ATS's personal backers, Count Giovanni Volpi, owner of Scuderia Serenissima, hired Bizzarrini to update a Ferrari 250 GT SWB, with chassis number #2819GT to help GTO specifications. This resulted in this Ferrari 250 GT SWB Drogo also known as the "Breadvan".Bizzarrini's engineering company, Societa Autostar, was commissioned to design and style a V-12 engine for any GT car to possibly be built by another discontented Ferrari customer, Ferruccio Lamborghini. Lamborghini considered the resulting engine for being too highly strung, and ordered that that be detuned.

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Bizzarrini worked since 1964 pertaining to Iso Rivolta and produced three models: Iso Rivolta GT, Iso Grifo both A3L as well as A3C versions. His work was in order to develop a pressed steel framework chassis for Iso automobiles. Renzo Rivolta hired him as consultant towards the Iso Gordon GT challenge which became the Iso Rivolta GT. The Iso Gordon GT prototype originated from the Gordon-Keeble. The Gordon Keeble GT has been designed in 1960 by simply Giugiaro. Bizzarrini tested the automobile and was impressed from the powerful V8 Corvette engine and the rear De Dion tube used for the GT:'Rivolta got me test the prototype. I liked its De Dion tube and especially the Corvette motor. It was the first time I had driven just one. It was superior to help Ferrari's engines, having the same power but that has a more immediate throttle reply. 'The Iso Rivolta GT was a Giugiaro designed four seater with beautiful body, speed, comfort and handling, and was a successful car for ISO with 799 units sold. Powered by a 327ci Chevrolet Corvette V8 engine that has a classic De Dion backside suspension design with hard pressed steel monocoque bodywork above pressed steel frame chassis. Unveiled to the click in 1963, production continued until 1970.The Iso Grifo A3L has been a monstrous idea to get a super coupé, the L coming coming from Lusso. The result of this brilliant Giugiaro and Bizzarrini doing work together, it was based with a shortened Iso Rivolta GT framework and was debuted for the 1963 Turin show. The Grifo epitomised the actual 1960s Italian style having its handsome low and extensive handmade bodywork. It was the most effective production car tested by means of Autocar Magazine in 1966 using a top speed of one hundred sixty mph (260 km/h). Later versions of this Grifo were powered by way of big block Chevrolet Corvette 435 bhp (324 kW; 441 PS) serps. These 90 handbuilt units are distinguishable through the raised "pagoda style" info bonnet. Some of these Iso Grifo 7 Litri models were rebuilt later with a whole lot larger engines.

The thought of Bizzarrini was to utilize 3AL cars for competition. The competition versions from the Grifo were named Iso Grifo A3C, C for Competizione as well as Corsa. A new lightweight riveted aluminium lightweight body was designed as well as built by Piero Drogo. It was an more boldly designed machine, oriented to endurance races. It uses normal ISO underpinnings even so the engine was moved further in the chassis frame versus Grifo A3L, protruding well into the particular driver's cabin, fitted with hot cameras and fed by 4 big Weber carburettors, giving more than 500 bhp (298 kW; 406 PS).

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Close to 29 A3C sport cars were built under the ISO name. Five of these 30 cars were bodied with plastic/fiberglass by Piero Drogo at Carrozzeria Sports Cars inside Modena. A3Cs were widely raced. Some cars entered the 1964 and 1965 The Mans 24 hour, 1965 Nürburgring 1000 and 1965 Sebring. It achieved a Le Mans class win in both years along with a 9th overall in 1965 without factory support. A3Cs were one of the fastest cars on LeMans' Mulsanne Right in both years.

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