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What's the diff...

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WillC:
http://nationwideparts.com/differentials.htm

Mr Rock:
This is better that the one I have hanging in my garage!

Now do you have a link that will decifer the gear ratio tag???

WillC:
 Jack up the rear axle and support it with jack stands. Put the transmission in neutral and then rotate the rear drive shaft by hand. While turning, count the number of drive shaft revolutions required for one revolution of the tire. If the drive shaft turns approximately 3-3/4 times, you have a 3.73 ratio, etc. It may help to use a piece of chalk mark a reference point on both the tire and drive shaft. For increased accuracy it is recommended to rotate the wheels two times and divide the result by two. You may have different gearing front to rear (but the difference is typically very slight) so be sure to check the other axle too.

Number of Turns       Approximate Gear Ratio
2 - 3/4                     2.72:1 or 2.77:1
3 - 0                              3.07:1
3 - 1/2                           3.54:1
3 - 3/4                           3.73:1
4 - 0                              4.10:1
4 - 1/2                           4.56:1
4 - 3/4                           4.88:1

gearhead1985B:
the most accurate way is to pop the cover and look at the ring gear it tells you what it is

Flex:
the laziest way is to call the dealership with ur vin.

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