New Question I'm puzzled.
OK. According to the markings/ID on the axle tube, the gearing is supposed to be 3.23. I read on another website that you can manually check it using this method:
Determining Gear Ratio
You will have to put the rear up on jackstands, put the transmission in neutral. Make sure that the car is quite stable, get under the car, and TURN THE DRIVESHAFT. Count the number of turns of the driveshaft it takes to turn one wheel one time. If you turn a wheel, instead of turning the driveshaft, you will only turn the other wheel (not the driveshaft).
It also works better (more accurate) if you turn the driveshaft enough times to turn one wheel ten times, and count the number of times you turn the driveshaft. This is because it may be difficult to tell if the driveshaft goes around, say, 2.56 or 2.78 times for one turn of a tire. But if you turn the driveshaft enough times to turn a wheel ten times, you will have 25.6, or 27.8, or 41.1 (or whatever) turns of the driveshaft. Then just divide by ten to get the ratio of the rear.
I used this method and turned enough to to make the wheel go around 10 times. I got 16.25 turns of the driveshaft each of the three times I tried it. According to the directions, I have a 1.62 rear end. That can't be right. Am I missing something?