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Old 01-22-2001, 08:11 PM   #5
exgmguy
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Join Date: Feb 1999
Location: Utica, Michigan
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There should be a tag on the diff cover bolt that says something like 2L73.

Or this trick works great. Jack the car up and count how many times the tires spin per one driveshaft revolution.

tires turn approx. 2 3/4 times, it is a 2.73.

You may also have a 3.08, or a 3.27. I am not sure what gears came in those cars.
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