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 Post subject: Speedo drive help
PostPosted:Mon Aug 29, 2016 9:38 pm 
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Big Block

Joined:Sun Jun 19, 2016 11:26 pm
Posts:59
Car Details:3rd Gen camaro RS 305TBI M5 Ttops
Hi guys I have been struggling to find the answer to sorting my speedo, the car was orig a auto with 2.73 rear and has been converted to manual T5 still using the 2.73 and 27" tyres so needless to say the speedo is somewhat out.

The speedo drive is electronic but looks different to the pics I have found, looks a cross between a cable drive and VSS, the driven gear is the same as a cable speedo mine is the red one. So the question is what driven gear will I need and will I get away with keeping the drive gear thats in the box.

Thanks in advance

This is what my driven gear looks like
Image


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Speedo drive help

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 Post subject: Re: Speedo drive help
PostPosted:Wed Aug 31, 2016 12:26 pm 
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Big Block
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Joined:Tue Feb 23, 2010 12:40 pm
Posts:3245
Car Details:'79 Camaro, 350 V8
Location:South Bucks
I thought that the different colours represented different gearing ratios. Without having looked yet, i wonder if there's a guide posted somewhere on the internet that show which gear to use for which ratios?

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 Post subject: Re: Speedo drive help
PostPosted:Wed Aug 31, 2016 2:43 pm 
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Big Block

Joined:Sun Jun 19, 2016 11:26 pm
Posts:59
Car Details:3rd Gen camaro RS 305TBI M5 Ttops
yeah the different colours are different number of teeth but I am unsure if I can use a different driven gear with the drive gear thats in.
as far as I know the red one I have is 22 teeth so I could get a 21 and 20 tooth one and try them but would be nice if someone had the answer instead of having to buy a handfull and having to try them all to get the correct reading


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 Post subject: Re: Speedo drive help
PostPosted:Sat Sep 10, 2016 9:09 am 
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Big Block

Joined:Sun Aug 08, 2010 11:18 am
Posts:148
Car Details:Camaro 1977 LT 305CI V8 small block
Location:Leicester
I've installed a GPS speedo, so I can change anything in the future and the speedo will always be correct. Will save you a lot of messing around, very easy to install.


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