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Bizzarrini Utes. p. A. was an Italian automotive manufacturer from the 1960s founded by former Alfa Romeo, Ferrari and ISO electrical engineer, Giotto Bizzarrini. The company built only a few highly developed and superior sport and racing motor vehicles before failing in 1969. Notable models include the actual 5300 GT Strada and the P538S.Originally Prototipi Bizzarrini s. r. l., the name was transformed to Bizzarrini S. p. A. in 1966. The Bizzarrini marque have been revived with several concept cars in the 2000s.Giotto Bizzarrini was blessed in Livorno, Italy in 1926. His father was any rich landowner who got their start in a family with robust roots in Tuscany and the city of Livorno. His grandfather, also named Giotto Bizzarrini, was a biologist who had worked with Guglielmo Marconi on his inventions, especially the radio, following which one in the Livorno Library sections ended up being named The Bizzarrini Collection.Bizzarrini graduated as an engineer from the University of Pisa throughout 1953. He taught briefly before joining Alfa Romeo throughout 1954. He worked for Alfa Romeo by 1954 to 1957. He began working pertaining to Ferrari in 1957, eventually becoming controller associated with experimental, Sports and GT car development. He worked at Ferrari being a developer, designer, test driver, and chief engineer with regard to five years. His developments there bundled the Ferrari 250 TR, the Ferrari 250 GT SWB (Limited Wheelbase Berlinetta or Berlinetta Passo Corto), and the 1962 Ferrari three hundred GTO.

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

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Bizzarrini worked since 1964 intended for Iso Rivolta and formulated three models: Iso Rivolta GT, Iso Grifo both A3L in addition to A3C versions. His work was to produce a pressed steel framework chassis for Iso cars. Renzo Rivolta hired him as consultant for the Iso Gordon GT venture which became the Iso Rivolta GT. The Iso Gordon GT prototype was developed from the Gordon-Keeble. The Gordon Keeble GT seemed to be designed in 1960 simply by Giugiaro. Bizzarrini tested the car and was impressed with the powerful V8 Corvette engine plus the rear De Dion tube for the GT:'Rivolta got me test the prototype. I liked its De Dion tube and especially the Corvette powerplant. It was the very first time I had driven just one. It was superior in order to Ferrari's engines, having the same power but with a more immediate throttle result. 'The Iso Rivolta GT was a Giugiaro designed several seater with beautiful physique, speed, comfort and handling, and was a successful car for ISO together with 799 units sold. Powered by a 327ci Chevrolet Corvette V8 engine having a classic De Dion rear suspension design with pressed steel monocoque bodywork in excess of pressed steel frame chassis. Unveiled to the click in 1963, production continued until 1970.The Iso Grifo A3L ended up being a monstrous idea for any super coupé, the L coming coming from Lusso. The result of the actual brilliant Giugiaro and Bizzarrini functioning together, it was based using a shortened Iso Rivolta GT framework and was debuted with the 1963 Turin show. The Grifo epitomised your 1960s Italian style using its handsome low and vast handmade bodywork. It was the fastest production car tested by Autocar Magazine in 1966 using a top speed of one hundred sixty mph (260 km/h). Later versions of the particular Grifo were powered with a big block Chevrolet Corvette 435 bhp (324 kW; 441 PS) serp. These 90 handbuilt units are distinguishable through the raised "pagoda style" information bonnet. Some of these Iso Grifo 7 Litri devices were rebuilt later with a whole lot larger engines.

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The idea of Bizzarrini was to utilize the 3AL cars for opposition. The competition versions of the Grifo were named Iso Grifo A3C, C for Competizione or Corsa. A new lightweight riveted aluminium body was designed and also built by Piero Drogo. It was an more boldly designed machine, oriented to endurance races. It uses normal ISO underpinnings nevertheless the engine was moved further the government financial aid the chassis frame compared to Grifo A3L, protruding well into the actual driver's cabin, fitted with hot cams and fed by several big Weber carburettors, giving more than 500 bhp (298 kW; 406 PS).

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About 29 A3C sport cars were built underneath the ISO name. Five of these twenty nine cars were bodied throughout plastic/fiberglass by Piero Drogo on Carrozzeria Sports Cars within Modena. A3Cs were widely raced. Some cars entered the particular 1964 and 1965 Le Mans 24 hour, 1965 Nürburgring 1000 and 1965 Sebring. It achieved a Le Mans class win in both years and a 9th overall in 1965 without having factory support. A3Cs were one in the fastest cars on LeMans' Mulsanne Immediately in both years.

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