MGC Roadster G/CN1 1967-1969
Engine
Cylinders
6
Bore 83.36mm
Stroke 88.9 mm
Displacement 2912 cc
Valves Pushrod overhead
Compression Ratio 9:1
Carburettors Twin SU 1.75" HS6
Power 145 BHP @ 5250
Transmission
Clutch 9" Borg & Beck, single dry plate diaphragm
Gearbox 4 Speed Syncromesh
Ratios: No Overdrive 1969 No Overdrive Pre 1969
4th 1.0 1.0
3rd 1.307 1.382
2nd 2.058 2.167
1st 2.98 3.44
Reverse 2.679 3.095
Overdrive Optional laylock Type LH
4th 0.82
3rd 1.07
Automatic Transmission Optional 3 speed Borg-Warner type 35
3rd 7.91
2nd
1st
Chassis
Construction Unitary
Brakes Girling servo assisted
Front 11.6" disc
Rear 9 x 2.5" drum
Steering Rack & pinion
3.5 turns to lock
Suspension - Front Independent, torsion bar, wishbone
Suspension - Rear Half elliptic leaf spring
Wheels Ventilated 5J x 15 disc
Optional 5J wire wheels
Dimensions & Weight
Wheelbase 7ft 7"
Track - Front 4ft 2"
Track - Rear 4ft 1.5"
Length 12ft 9.2"
Width 5ft
Height 4ft 2"
Ground Clearance 4.5"
Turning Circle 34ft 
Kerb Weight 21.8 cwt
Performance
Max Speed 118 Mph
0-60 10 Sec
Fuel Consumption 19.3 mpg
Production
UK 1403
USA 717
Rest of the world 18720
Total 115898