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Does the Z28 Torsen unit have a means for initial preload? One place helical differentials like the Torsen suffer in comparison to clutch-types is in heavily loaded highly dynamic situations, like autocross. They need a fair amount of grip on the inside rear for the mechanism to work, otherwise it becomes a 1-wheel peel.
GM equips their Corvettes (don't have any Camaro5 experience) with the best clutch-type diff setups of any OEM, curious to know the reasoning.
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