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Bizzarrini Ersus. p. A. was an Italian automotive manufacturer inside the 1960s founded by former Alfa Romeo, Ferrari and ISO professional, Giotto Bizzarrini. The company built a small number of highly developed and sophisticated sport and racing vehicles before failing in 1969. Notable models include the 5300 GT Strada plus the P538S.Originally Prototipi Bizzarrini ersus. r. l., the name was changed to Bizzarrini S. p. A. in 1966. The Bizzarrini marque have been revived with quite a few concept cars in the actual 2000s.Giotto Bizzarrini was born in Livorno, Italy in 1926. His father was a rich landowner who originated from 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 his / her inventions, especially the radio, following which one on the Livorno Library sections seemed to be named The Bizzarrini Collection.Bizzarrini graduated as an engineer inside the University of Pisa inside 1953. He taught briefly previous to joining Alfa Romeo inside 1954. He worked for Alfa Romeo via 1954 to 1957. He began working intended for Ferrari in 1957, eventually becoming controller associated with experimental, Sports and GT car or truck development. He worked at Ferrari as a developer, designer, test driver, and chief engineer regarding five years. His developments there integrated the Ferrari 250 TR, the Ferrari 250 GT SWB (Quick Wheelbase Berlinetta or Berlinetta Passo Corto), and the 1962 Ferrari 300 GTO.

Bizzarrini was fired by Ferrari during the "palace revolt" of 1961. He became part connected with Automobili Turismo e Activity (ATS)), a company started through the ex-Ferrari engineers to produce a Formula 1 single seater and a GT sport car, the A. T. S. Serenissima.One of ATS's monetary backers, Count Giovanni Volpi, owner of Scuderia Serenissima, hired Bizzarrini to upgrade a Ferrari 250 GT SWB, with chassis number #2819GT to help GTO specifications. This resulted in this Ferrari 250 GT SWB Drogo often known as the "Breadvan".Bizzarrini's engineering company, Societa Autostar, was commissioned to style a V-12 engine for the GT car to become built by another disappointed Ferrari customer, Ferruccio Lamborghini. Lamborghini considered the resulting engine to get too highly strung, and ordered that this be detuned.

Bizzarrini worked since 1964 with regard to Iso Rivolta and developed three models: Iso Rivolta GT, Iso Grifo both A3L and A3C versions. His work was in order to develop a pressed steel framework chassis for Iso automobiles. Renzo Rivolta hired him as consultant on the Iso Gordon GT task which became the Iso Rivolta GT. The Iso Gordon GT prototype was created from the Gordon-Keeble. The Gordon Keeble GT was designed in 1960 by means of Giugiaro. Bizzarrini tested the automobile and was impressed because of the powerful V8 Corvette engine as well as the rear De Dion tube employed for the GT:'Rivolta received me test the prototype. I liked its De Dion tube and especially the Corvette powerplant. It was the first time I had driven a single. It was superior for you to Ferrari's engines, having the same power but using a more immediate throttle response. 'The Iso Rivolta GT has been a Giugiaro designed some seater with beautiful human body, speed, comfort and handling, and was a effective car for ISO together with 799 units sold. Powered by a 327ci Chevrolet Corvette V8 engine using a classic De Dion backside suspension design with forced steel monocoque bodywork around pressed steel frame framework. Unveiled to the push in 1963, production continued until 1970.The Iso Grifo A3L had been a monstrous idea for the super coupé, the L coming through Lusso. The result of the brilliant Giugiaro and Bizzarrini operating together, it was based with a shortened Iso Rivolta GT chassis and was debuted on the 1963 Turin show. The Grifo epitomised your 1960s Italian style with its handsome low and extensive handmade bodywork. It was the speediest production car tested simply by Autocar Magazine in 1966 with a top speed of 160 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 from the raised "pagoda style" deal bonnet. Some of these Iso Grifo 7 Litri devices were rebuilt later with a great deal larger engines.

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The thinking behind Bizzarrini was to utilize 3AL cars for competition. The competition versions in the Grifo were named Iso Grifo A3C, C for Competizione or even Corsa. A new lightweight riveted aluminum body was designed in addition to built by Piero Drogo. It was an boldy designed machine, oriented to endurance races. It uses normal ISO underpinnings though the engine was moved further in the chassis frame compared to the Grifo A3L, protruding well into the driver's cabin, fitted with hot cams and fed by a number of big Weber carburettors, giving more than 500 bhp (298 kW; 406 PS).

Close to 29 A3C sport cars were built underneath the ISO name. Five of these 30 cars were bodied with plastic/fiberglass by Piero Drogo on Carrozzeria Sports Cars within Modena. A3Cs were widely ran. Some cars entered the actual 1964 and 1965 The Mans 24 hour, 1965 Nürburgring 1000 as well as 1965 Sebring. It achieved a The Mans class win in both years and a 9th overall in 1965 without having factory support. A3Cs were one from the fastest cars on LeMans' Mulsanne Straight in both years.

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