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Old 03-28-2013, 08:24 PM   #3
YELOZL1
 
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Drives: 2013 ZL1 Yellow & 1969 Z28 Orange
Join Date: Feb 2013
Location: La Salle, MI
Posts: 15
If you change your tire dia. (smaller) it will change your rear end ratio gear here is a chart.

http://www.4lo.com/calc/geartire.php
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