I just pulled one from the junkyard and mine is a 3.23 Posi with Discs out of a 1994 Camaro. That should be what you have. Make sure your car is sitting on LEVEL ground, Chock the front wheels and set the back on jack stands. throw the car in Neutral and rotate the wheels while looking at the Pinion. Count the number of times the pinion rotates in relation to one rotation of the wheel. Your pinion should rotate about 3 1/4 times.
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