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Can anyone help me fiqure out my speedometer?I have just installed a new driving gear on the trans.It is a green 1.816 & a red 21 tooth speedo gear. I have 245/60/15 tires that are 25.5 inches tall this is a 4 speed muncie trans & 12 bolt rear end with 3.08 ratio

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johnny
 

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Just FYI...if its a 12-bolt, it is a 3.07.

I believe there is a method in the tech section which will show you how to calculate speedo error....

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Steve McCorry - Central Ohio Camaro Club
'69 Camaro RS/SS-350 - Daytona Yellow
'95 Camaro Z-28 - Sebring Silver
 

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Check out this site for some good info on speedo gears:
http://www.corecomm.net/~faldrich/

Then click on "speedo gear selection"

Good luck

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70 & 1/2 RS
SB406 & M20 4spd
9" rear

70 Malibu 350/TH400

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Driveline Technician
 
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