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Old 07-10-2013, 08:30 AM   #257
Norm Peterson
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Originally Posted by gajagfan View Post
. . . I would be concerned that the increased rear grip could bring back some understear, but assume the increased front grip would compensate for that
Close enough. More precisely, it's a matter of balancing the slip angles front vs rear, which generally follows what you do with tire sizes and wheel widths.

what is the difference in the two rear diffs (1LE vs ZL1)? I ask because I do not know and am curious.
The ZL1 has a 9.9" ring gear and an iron diff case. I think those are ZL1-specific pieces not available otherwise. "Heavy duty limited slip" was mentioned in the early reviews for the ZL1, whatever that means.

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