MGB Five Speed Conversion Kit

Shared Left Border

Two kits are available to cover all 4 synchro MGB cars with the wider gearbox tunnel and the 3 synchro models with the narrow tunnel.

The conversion adapts a Ford Sierra type 9 gearbox(5-speed fully synchronized) to the MGB engine

The standard ratios of the Sierra gearbox suit the MGB well with a 10% higher second gear for better overtaking. The 5^th gear ratio is exactly the same as the MGB overdrive ratio

The conversion is totally non-intrusive to the MGB. There are no holes to drill, no metal to cut or remove. With the conversion kit installed the clutch plate can be replaced without removing the engine.

Prices are subject to change without notice.

The Conversion Kit Complete with Gearbox $2395.00

Close Ratio Gearbox Available ……………. $325.00 extra

The MGB Kit Contains:

1. Ford Sierra type 9 gearbox 

2. Cast aluminum Bell Housing

3. Clutch release lever pivot & bolt

4. Gasket, Bell Housing to gearbox

5. Extended spigot bush

6. Rear rubber gearbox mounting

7. New gearbox support cross member/clamp plates

8. Modified gear lever assembly

9. New propshaft assembly

10. Speedo cable/circlip

11. All bolts & fasteners

12. Detailed fitting instructions

13. Loctite ( 2 types )