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Speedo reading too fast

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Old Feb 11, 2006 | 06:56 PM
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wment's Avatar
wment
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Speedo reading too fast

I have just installed 4:11 gears behing my 302 with a C6. The speedo reads about 60mph when Im going about 40mph. According to the old parts books I have, the proper speedo gear is installed but I need a reducer/adapter to reduce the speed of the cable by about 70% (actually .695 to 1). I have looked all over, can anyone point me in the right direction to locate one.

Wayne
 
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Old Feb 11, 2006 | 09:10 PM
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rclarke
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A C6 has the drive gear rolled onto the output shaft and there are 2 different shafts, 7 tooth and 8 tooth. You may have to change the output shaft to get the speedo to read correctly. If you can find a good speedo shop it is possible to have a gearbox made to add into the speedometer cable to fix the problem.
If you have a 4x4 the drive gear is in the transfer case and is replaceable.
 
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Old Feb 11, 2006 | 09:39 PM
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You can get a bit closer by installing a driven gear with more teeth on it.
 
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