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Bizzarrini S. p. A. was an Italian automotive manufacturer in the 1960s founded by ex- Alfa Romeo, Ferrari and ISO industrial engineer, Giotto Bizzarrini. The company built a small amount of highly developed and innovative sport and racing automobiles before failing in 1969. Notable models include this 5300 GT Strada plus the P538S.Originally Prototipi Bizzarrini ersus. r. l., the name was improved to Bizzarrini S. p. A. in 1966. The Bizzarrini marque may be revived with several concept cars in this 2000s.Giotto Bizzarrini was born in Livorno, Italy in 1926. His father was the rich landowner who originated in a family with strong roots in Tuscany and the city of Livorno. His grandfather, also named Giotto Bizzarrini, was a biologist who had worked with Guglielmo Marconi on the inventions, especially the radio, following which one on the Livorno Library sections had been named The Bizzarrini Stockpile.Bizzarrini graduated as an engineer inside University of Pisa in 1953. He taught briefly previous to joining Alfa Romeo in 1954. He worked for Alfa Romeo from 1954 to 1957. He began working with regard to Ferrari in 1957, eventually becoming controller of experimental, Sports and GT car or truck development. He worked at Ferrari to be a developer, designer, test driver, and chief engineer with regard to five years. His developments there integrated the Ferrari 250 TR, the Ferrari 250 GT SWB (Small Wheelbase Berlinetta or Berlinetta Passo Corto), and the 1962 Ferrari 250 GTO.

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Bizzarrini ended up being fired by Ferrari throughout the "palace revolt" of 1961. He became part connected with Automobili Turismo e Game (ATS)), a company started from the ex-Ferrari engineers to build a Formula 1 single seater plus 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 up grade a Ferrari 250 GT SWB, with chassis number #2819GT to be able to GTO specifications. This resulted in the actual Ferrari 250 GT SWB Drogo generally known as the "Breadvan".Bizzarrini's engineering company, Societa Autostar, was commissioned to layout a V-12 engine for any GT car to possibly be built by another not satisfied 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 with regard to Iso Rivolta and produced three models: Iso Rivolta GT, Iso Grifo both A3L along with A3C versions. His work was to develop a pressed steel body chassis for Iso autos. Renzo Rivolta hired him as consultant to the Iso Gordon GT undertaking which became the Iso Rivolta GT. The Iso Gordon GT prototype was made from the Gordon-Keeble. The Gordon Keeble GT seemed to be designed in 1960 by simply Giugiaro. Bizzarrini tested the car and was impressed through the powerful V8 Corvette engine as well as the rear De Dion tube used for the GT:'Rivolta acquired me test the prototype. I liked its De Dion conduit 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 answer. 'The Iso Rivolta GT seemed to be a Giugiaro designed some seater with beautiful human body, speed, comfort and handling, and was a productive car for ISO having 799 units sold. Powered by a 327ci Chevrolet Corvette V8 engine using a classic De Dion backside suspension design with hard pressed steel monocoque bodywork over pressed steel frame framework. Unveiled to the mass media in 1963, production continued until 1970.The Iso Grifo A3L has been a monstrous idea for just a super coupé, the L coming via Lusso. The result of this brilliant Giugiaro and Bizzarrini doing the job together, it was based on a shortened Iso Rivolta GT framework and was debuted on the 1963 Turin show. The Grifo epitomised the 1960s Italian style having its handsome low and vast handmade bodywork. It was the fastest production car tested by means of Autocar Magazine in 1966 using a top speed of 160 mph (260 km/h). Later versions of the Grifo were powered by the big block Chevrolet Corvette 435 bhp (324 kW; 441 PS) powerplant. These 90 handbuilt units are distinguishable through the raised "pagoda style" info bonnet. Some of these Iso Grifo 7 Litri units were rebuilt later with a whole lot larger engines.

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

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Around 29 A3C sport cars were built under the ISO name. Five of these 30 cars were bodied in plastic/fiberglass by Piero Drogo at Carrozzeria Sports Cars within Modena. A3Cs were widely raced. 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 of the fastest cars on LeMans' Mulsanne Direct in both years.

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