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Speedo Drive Gear


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Hi all, does anyone know what colour speedo drive i need for a getrag 5 speed box for a manta A series 1973 manual with original back axle. Car is currently a 4 speed but bought a 5 speed manta gearbox without the speedo drive gear, cheers.

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  • 10 years later...

Plenty of speedo drive calculators online using tyre sizes final drive etc. But you need to know the drive gear size for your box which someone may be able to help with as I don’t know. 

This YouTube clip may help to explain things a little better. 

Links to a couple of the calculators.

which may help. 



Edited by Mickfrad
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My rear axle is (original) an 3.18 so thats maybe why. When I drive 200km/h the speed on my GPS is 202km/h chrono. So my speedometer is rather accurate. Remember this while I was chasing a Shelby Cobra on the German highway to the Nürburgring. We exchanged thumbs up while I pushed harder and passed him. 

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