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identifying marks on differentials?

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Old 05-14-07, 09:01 PM
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Question identifying marks on differentials?
are there any external methods of differentiating between an auto and manual diff?
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Old 05-15-07, 05:11 AM
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I believe they have different companion flanges.

But I don't know if they look different from the outside.

The other option is to turn the flange and count out the ratio.

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Old 05-15-07, 05:33 AM
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The manual pinion flange is about 1" thick, the auto is about 5/16" thick. There are no real identifying marks on the outside of the casing, because it is the same.
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