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Re: help me identify my diff, nothing in archives. (archive)
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Posted by Dwight Chew on June 25, 2000 at 17:06:03:

In Reply to: help me identify my diff, nothing in archives.... posted by Allen on June 25, 2000 at 14:45:32:

Unfortunately, the '02 speedometer is not the most accurate thing. At 4000 rpm with a 3.64:1 differential, you should be at 76 mph with stock diameter tires. With a 3.90:1, it's 71 mph.

The easiest way to tell is to jack up the rear of the car and put it on jackstands. Then rotate the driveshaft 4 times. If the rear wheel rotates 4 times, then it's a 3.90 rearing. 3.5 times, it's a 3.64.

Somewhere in it's lifetime, a PO may have swapped your differntial.

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