| 1929 | Michael Charles Costin born in London, England; educated Salvatorian College, Harrow Weald, England
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1933 | Keith David Duckworth born in Blackburn, Lancashire, England; educated Giggleswick School, Yorkshire, England
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| 1953 | Mike Costin design draftsman, de Havilland, during day and engineer with Lotus Engineering at night
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| 1956 | Mike Costin Technical Director, Lotus Cars
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| 1957 | Keith Duckworth transmission development engineer, Lotus Cars
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| 1958 | Mike Costin/Keith Duckworth found Cosworth Engineering; first sited in Shaftsbury Mews, London W8, England. Mike Costin with Lotus Engineering during day and Cosworth Engineering at night.
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| 1959 | Cosworth Engineering moves to 43 Friern Barnet Road, Friern Barnet, London, England
Project Mk I: modified 4 cylinder pushrod Ford 105E Anglia engine
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| 1961 | Cosworth Engineering moves to 2 Kenninghall Road, Edmonton, London, England
Project Mk IV: bored out version of MkIII fitted with bigger valves
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| 1962 | Mike Costin joins Cosworth Engineering full time.
Project Mk V: modified 4 cylinder pushrod Ford 109E Classic for installation in Lotus 7
Project TA: twin cam Lotus
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| 1963 | Project Mk VIII: modified 4 cylinder pushrod Ford 116E Cortina engine for road-going Lotus Super 7
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| 1964 | Cosworth Engineering moves to St James Mill Road, Northampton, England
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| 1965 | Project SCC: SCA with increased bore, 1100CC for US sports car formula
Project MA: MAE 4 cylinder pushrod engine, modified Anglia Series E (Ford 105E), for Formula 3
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| 1966 | Keith Duckworth signs the Ford-Cosworth contract for the DFV
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| 1967 | Lotus Cosworth-Ford DFV debuts at Dutch Grand Prix, Zandvoort: Jim Clark wins by 27 seconds
DFV Grand Prix victories=4
Project BDA (BDA=belt-drive, series A)
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| 1968 | Project DFW: converted DFV, 54.00mm short stroke for Tasman series
DFV Grand Prix victories=11
Project BDB: modified BDA for Ford rallying
Project CA: Cosworth car
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| 1969 | DFV Grand Prix victories=11
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| 1970 | Project BDC: fuel-injected BDB, for Group 2 saloon car rallying
Project BDD: Formula Atlantic version of BDA
DFV Grand Prix victories=8
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| 1971 | DFV Grand Prix victories=7
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| 1972 | Project EA: Chevrolet Vega
Project BDE: Formula 2 version of BDA, bored to 85.6mm
Project BDF: modified BDE for Formula 2
DFV Grand Prix victories=10
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| 1973 | DFV Grand Prix victories=15
Project BDA: belt drive types A, now BDR for Ford RS1600 Escort
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| 1974 | Project JA: motorcycle 750cc twin-cylinder for Norton Villiers Triumph, 30 built
DFV Grand Prix victories=12
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| 1975 | Project LA: Cosworth automatic gearbox
DFV Grand Prix victories=8 Project
DFX: 57.30mm long stroke turbocharged
DFV for Indianapolis racing
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| 1976 | DFV Grand Prix victories=10
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| 1977 | DFV Grand Prix victories=12
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| 1978 | Project VA: differential limit slip
DFV Grand Prix victories=9
Project KA: rally version of Opel Ascona 400
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| 1979 | DFV Grand Prix victories=8
Project OA: Formula Supervee Volkswagen 4 cylinder engine
Castings plant established at Worcester, England
Castings manufacture heads and blocks for F1 and Indy
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