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Old 01-05-2015, 01:35 AM   #1
MAC71
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What Differential is this?

What differential is this, the autoparts store is coming up with a gasket that is incorrect and I want to change the gear oil and need to determine the gear ratio so I can fix the speedometer that is 15 mph off.

This is in a 1969 C20.

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Old 01-05-2015, 03:19 AM   #2
leftybass209
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Re: What Differential is this?

That's a Dana differential. I believe they came standard with a 4.10 ratio but don't quote me on that, I'm not a 3/4 ton guy.
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Old 01-05-2015, 03:20 AM   #3
68bowtie
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Re: What Differential is this?

dana 60
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Last edited by 68bowtie; 01-05-2015 at 03:28 AM. Reason: error
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