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| Category | Formula One | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Constructor | Cooper Car Company | ||||||||
| Designer(s) | Owen Maddock | ||||||||
| Predecessor | Cooper T60 | ||||||||
| Successor | Cooper T73 | ||||||||
| Technical specifications | |||||||||
| Chassis | Steel spaceframe | ||||||||
| Suspension (front) | Double wishbone, coil spring and damper | ||||||||
| Suspension (rear) | Double wishbone, coil spring and damper | ||||||||
| Axle track | F: 1,308 mm (51.5 in) R: 1,283 mm (50.5 in) | ||||||||
| Wheelbase | 2,311 mm (91.0 in) | ||||||||
| Engine | Coventry Climax FWMV 1.5-litre V8, naturally aspirated, rear mid, longitudinally mounted. | ||||||||
| Transmission | Cooper 6-speed manual gearbox. | ||||||||
| Tyres | Dunlop | ||||||||
| Competition history | |||||||||
| Notable entrants | Cooper Car Company R.R.C. Walker Racing Team | ||||||||
| Notable drivers |  Bruce McLaren Tony Maggs Jo Bonnier | ||||||||
| Debut | 1963 Monaco Grand Prix | ||||||||
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The Cooper T66 is a Formula One racing car from the Cooper Car Company, which was in use from 1963 to 1964.