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Help needed with speedo drive for m21 4speed man gearbox

Hi im currently looking for a speedo drive assembly kit for a holden hq 1972 the gear box which needs this is a aussie 4 speed. Currently looking for a speedo retainer and driven gears and anything else needed to send information form gear box to speedometer. if you can help me at all that would be greatly appreciated.

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In the back of the box is the DRIVE GEAR held in place with a clip. This in turn drives the DRIVEN GEAR on the end of the cable, both are available at Rares and other places, the clips are probably still available at Holden.

First you need to find out what drive gear you have by counting the teeth on the FLAT of the gear not the side of the gear. To do this you will need to remove the gearbox extension housing.

Then use the Speedo Gear Calculator on this site to find out what driven and drive gears you need.

http://codes.oldhold...

When removing the extension housing on the gearbox be careful not to pull the rear shaft, as for memory the shaft is only held in place by the extension housing against the rear bearing.

To remove the drive gear on the rear shaft simply depress the clip inside the gear and the gear will slide off.

Hope this helps.

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i have a heap of all differant colour speedo gears here give me a call with which one you are after $7 each

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