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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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Gearbox 3-speed synchro MG MGB Mk 1 (with D-Overdrive)
Technical Specifications
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From model year 1964 onward
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With 18GB engine
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Gearbox input shaft enlarged from 15.75 mm to 21.59 mm
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From model year 1966: four-bearing layshaft and increased shaft diameter
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With D-Type Overdrive
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