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post #1 of 6 (permalink) Old 04-26-13, 09:16 PM Thread Starter
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Gear ratio

Hey guys, just wondering what the gear ratio is in a 92 crown vic and if I can replace that rearend with one out of a newer interceptor. Is it worth doing or just a waste of time?

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post #2 of 6 (permalink) Old 04-26-13, 10:48 PM
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Re: Gear ratio

If the rear end will bolt in then of course you can . .the only change will be it the ratio is higher or lower then the original . .you can look at the pinion gear on the end that faces the ring gear and the ratio should be stamped on that
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post #3 of 6 (permalink) Old 04-27-13, 11:39 AM
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Re: Gear ratio

Police: 3.27, civilian: 2.73, but as far as bolting up, should be the same, unless there was a radical change in the shell.

Ever notice that there's so many high performance parts available for GM products?

Did you ever think that maybe they NEED them?
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post #4 of 6 (permalink) Old 04-28-13, 08:20 PM
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Re: Gear ratio

3:27's are also in cars with HPP. They are interchangeable with 2:73's.
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post #5 of 6 (permalink) Old 04-28-13, 11:51 PM
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Re: Gear ratio

Have to look at door sticker where it says AX . . The ratio can be anything like 2.55, 2.73, 3.08, 3.27, or 3.55 . . Those gears can be open or trac-lok also depending on code given . Usually 3.55 trac-loks were in wagons, limos, or tow package & known as "K" code rears . Have to check code on door of car or metal tag on diff. cover . . The rear is a 8.8" & can have 3.73 or 4.10 installed also, but will cause higher rpm at highway speed


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post #6 of 6 (permalink) Old 04-29-13, 12:26 AM
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Re: Gear ratio

Open/Lock/Ratio # ----------------------
-G / H / 2.26
B / C / 2.47
8 / M / 2.73
7 / -/ 3.07
Y / Z / 3.08
4 / D / 3.42
F / R / 3.45
5 / E / 3.27
6 / W / 3.73
2 / K / 3.55
A / -/ 3.63
J / -/ 3.85


my 1986 Grand Marquis LS... Rose...
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