I recently replaced my stock 2.73 ratio open rear with a 3.73 posi unit in my 72 Chevelle SS and having a little trouble figuring out how fast I'm going on the clock. The car also has 245/60r15 tires on stock 5-spoke SS rims and the original TH350 auto. I know this ratio was available originally in the car and was wondering if anybody had any info on the different speedo gears that were used in the trans. I also know that there are different color gears for different ratios, so looking for one that will set me speedo right, but don't know what the color may be. if anybody has any info it would greatly be appreciated, Thanks

Try these
www.chevelles.com/shop/speedo.html (http://www.chevelles.com/shop/speedo.html)
and
www.geocities.com/~69_chevelle/ (http://www.geocities.com/~69_chevelle/)



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Rick Schaefer
72 El Camino
TPI 350/700r4
Aces #00140
TEAM CHEVELLE #00038
NCOA #16197

Jon
Also take a look at speedo calibration info at my web site.

http://www.chevelles.com/forum/redface.gif Just another example of type first, read second.

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Fred Aldrich
Web Site: www.GeoCities.com/~69_chevelle (http://www.GeoCities.com/~69_chevelle)


[This message has been edited by Fred Aldrich (edited 07-19-99).]

Hey Fred-
Rick already listed your site! http://www.chevelles.com/forum/wink.gif

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Steve
64SS-327-4spd-sold to Original owner!
In process of finding a 65
Team Chevelle Member #71

I just changed gears in my Chevelle and used Fred's information. RIGHT ON THE MONEY!!!! Had to add 4 teeth to to get 10%.

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GARY
71 SS 454
T.C. Gold #56 ACES #2412