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Originally Posted by Fraxum
One would hope the Z/28 could withstand a few hard launches.
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Found this in a thread discussing the ZL1 Differential & axles, figured it was worth quoting here . . .
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And stronger, 9.9 inch gear, cast iron housing, GM finally did there homework on this unit!
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http://www.camaro5.com/forums/showpo...3&postcount=16
Given that weight was the enemy for the Z/28 to the extent that it has a different and lighter wiring harness, you shouldn't expect it to get a large iron case diff which is more rigid than what it would have been in aluminum. Even momentarily, excessive case distortion (such as under harsh dragstrip launch conditions) isn't good for long-term gear durability. Don't know anything about the Z/28's R&P size, though I'll bet it's less than 9.9".
Norm