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Old Nov 4, 2004 | 02:37 PM
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Default Rear End Gear Type

I cannot locate the code inside of the glove box but my rear diff is stamped with 2.73. Does this mean that I have 2.73 gears or is it just the size of the rear end.
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Old Nov 4, 2004 | 03:04 PM
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Sorry, but if you dont see the code and the rear is stamped 2.73, thats what you have. The 2.73 and 3.15 cases are different.
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Old Nov 4, 2004 | 04:57 PM
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trueblue02;

you can verify that here:
http://mikemercury.home.att.net/ratio.htm
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Old Nov 5, 2004 | 10:00 AM
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If you want to check your engine speed in 4th gear, here are the correct rpm values.

3.15s

2000 rpm @ 72 mph
2100 rpm @ 76 mph

3.73

2300 rpm @ 70 mph
2500 rpm @ 76 mph

3.90

2400 rpm @ 70 mph
2600 rpm @ 76 mph

I didn't calculate for the 2.73s, but if you're turning less than the 3.15 values then, obviously, you have a taller gear.
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