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Old 10-31-2011, 08:08 PM
Gene K Gene K is offline
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3.21's should never have been in these trucks to begin with.

With 17's 3.55 is minimum. With 20's the 3.92 is minimum.

Since you already have a Superchips so you can adjust for different ratios and 20's I would go 4.10. That will be similar to the 3.92 17" combo in rpm.
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