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A-Overdrive Austin-Healey BN1
Technical Specifications
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With centrifugal switch
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Up to model year 1955
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28% reduction
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Optional 22% reduction
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A-Overdrive Austin-Healey BN2,4,6,7 / BT7 / BJ8
Technical Specifications
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With round flange
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22% reduction
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A-Overdrive Jaguar XK 140-150 / MK 1-2 / MK X & 420G
Technical Specifications
- XK 140-150
- MK 1-2
- MK X-420 G
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A-Overdrive Triumph TR2-6
Technical Specifications
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From TS 6280 onward
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2nd, 3rd, and 4th gears switchable
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Gear ratio: 0.82:1
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C-Overdrive Jaguar MK 2 / S-Type
Technical Specifications
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Long version
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For all synchromesh gearboxes
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From model year 1965 onward
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MK 2 and S-Type
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D-Overdrive MG MGB Mk 1
Technical Specifications
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MK 1, model years 1963–1967
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Gear ratio: 0.802:1
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D-Overdrive Triumph Spitfire Mk 1-4 / GT6 Mk 1-2 / Vitesse
Technical Specifications
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GT6 MK 1 and MK 2
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Vitesse
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