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#1692218 - 02/18/09 06:09 AM whats my gear ratio
I_AM_SEAN Offline
Member

Registered: 12/14/08
Posts: 249
Loc: Lexington,KY
i'm not sure if my gear ratio is correct, it says my axle is "X5" and when I rev my car to burn out both tires spin, does that mean posi-trac?
also i want max MPG so what should i switch to?


Edited by I_AM_SEAN (02/18/09 06:09 AM)
_________________________
2001 CVPI -147.979k Miles Former KSP
Interior Paint job, 180F Temp, Typhoon PI Intake Manifold, Headlight Wiring mod, ZIP tube, 37k Transmission,5% tint rear/25%front.

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#1692239 - 02/18/09 07:25 AM Re: whats my gear ratio [Re: I_AM_SEAN]
98VicP71 Offline
[email protected]
Grand Poobah

Registered: 03/28/06
Posts: 12731
Loc: ATL
yes that would mean you have a trac-loc.

As for rear gears for the best fuel economy you would want to switch to 2:73's

You currently have 3:27's
_________________________
1993 Lincoln Town Car 150k+ - RIP 5/10/2011
1998 Ford Crown Victoria P71 - RIP 12/25/2006
2001 Ford Crown Victoria P71(Count blackula) 297k+ - Ummmmmm evil

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#1692255 - 02/18/09 07:43 AM Re: whats my gear ratio [Re: 98VicP71]
I_AM_SEAN Offline
Member

Registered: 12/14/08
Posts: 249
Loc: Lexington,KY
Okay so for the swap
1 do you know where i can get them
2 is there any major thing i have to do?
_________________________
2001 CVPI -147.979k Miles Former KSP
Interior Paint job, 180F Temp, Typhoon PI Intake Manifold, Headlight Wiring mod, ZIP tube, 37k Transmission,5% tint rear/25%front.

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#1692257 - 02/18/09 07:48 AM Re: whats my gear ratio [Re: I_AM_SEAN]
98VicP71 Offline
[email protected]
Grand Poobah

Registered: 03/28/06
Posts: 12731
Loc: ATL
1.) you can find them anywhere, Ebay, On this board, adtr.net summit and so forth.

I would look on here and ebay to find the best deal. Most people swap their gear out to go to a lower gear so there should be some that have a set of 2:73 gears that they would be willing to part with pretty cheap.

2.) You will want to have them installed by a professional. it is about a 4 hour process if you know what you are doing and there are very tight tolerances you have to deal with and would need a dial indicator and such.


personally if you are going to swap gears and will have the rear end torn apart anyway now would be a perfect time to get a rear end rebuild kit and replace all the bearings and seals in the rear end as well as the axle seals and bearings.
_________________________
1993 Lincoln Town Car 150k+ - RIP 5/10/2011
1998 Ford Crown Victoria P71 - RIP 12/25/2006
2001 Ford Crown Victoria P71(Count blackula) 297k+ - Ummmmmm evil

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#1692262 - 02/18/09 07:54 AM Re: whats my gear ratio [Re: 98VicP71]
I_AM_SEAN Offline
Member

Registered: 12/14/08
Posts: 249
Loc: Lexington,KY
I check adtr and ebay neither have them


Edited by I_AM_SEAN (02/18/09 08:25 AM)
_________________________
2001 CVPI -147.979k Miles Former KSP
Interior Paint job, 180F Temp, Typhoon PI Intake Manifold, Headlight Wiring mod, ZIP tube, 37k Transmission,5% tint rear/25%front.

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#1692416 - 02/18/09 12:12 PM Re: whats my gear ratio [Re: I_AM_SEAN]
Rizzo Offline
J-MOD Master
Metroplectic

Registered: 03/06/04
Posts: 29215
Loc: Romulus,MI
Check out the for sale section here... A near free set of 2.73's will become more available as peeps get tax refunds and want a higher ratio.

If you buy used... Ask for pics...If the teeth arent saw "blade sharp" so to speak... Walk.
_________________________


The Jmod video is done! LINK!

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#1692430 - 02/18/09 12:25 PM Re: whats my gear ratio [Re: Rizzo]
kustomizingkid Offline
Poobah

Registered: 11/18/06
Posts: 5070
Loc: Minnesota
Just pick up a complete rear axle assembly form a junk yard with the 2.73's in it...
_________________________
2000 CVPI 121,000 miles

1998 Mark VIII Collector's Edition 110,000 miles


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#1692449 - 02/18/09 12:40 PM Re: whats my gear ratio [Re: I_AM_SEAN]
dRock96Marquis Offline


Posting Addict

Registered: 02/22/05
Posts: 24394
Loc: Maryland
 Originally Posted By: I_AM_SEAN
i'm not sure if my gear ratio is correct, it says my axle is "X5" and when I rev my car to burn out both tires spin, does that mean posi-trac?
also i want max MPG so what should i switch to?



X5 is 3.27 w/ Traction-lok for 2001 MY

Complete door sticker axle code chart for '01:

 Quote:
The axle ratios are:

l C8 2.73 conventional (non-locker)

l 58 2.73 conventional (non-locker)

l AZ 3.08 conventional (non-locker)

l R2 3.55 conventional (non-locker)

l Z5 3.27 conventional (non-locker)

l X5 3.27 locker




There is also a tag on the rear differential cover with the ratio stamped on it. For a 3.27 w/ TL it would be 3L27, then the plant/buil sequence under it.
For a 3.27 open it would read 3 27, with the open space between.

The first digit is often partially under the diff cover bolt. If it ends in 27, 08, or 55 it is a 3. If it ends with 73 it has 2.73s (which weren't installed in CVPIs, but are in all base CV/GMQ)
_________________________
-Derek
-Panther info & FAQs-



Former owner of a Grand Marquis with a few mods, Grand Marquis "LSE S/C"

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#1692488 - 02/18/09 02:10 PM Re: whats my gear ratio [Re: dRock96Marquis]
RiceBurnt6 Offline
Poobah

Registered: 10/21/08
Posts: 5079
Loc: SWMI
You Rock!! Drock. I have x5 as well. But when i encountered 7' of snow. Only 1 wheel was spinning? If i hold down the brakes and do a burnout both wheels spin?
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Originally Posted By: RiceBurnt6
You're getting mad at the content of a thread of which you clicked on? Maybe you need to get a life? Yes?

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#1692493 - 02/18/09 02:26 PM Re: whats my gear ratio [Re: RiceBurnt6]
98VicP71 Offline
[email protected]
Grand Poobah

Registered: 03/28/06
Posts: 12731
Loc: ATL
 Originally Posted By: Stallone
You Rock!! Drock. I have x5 as well. But when i encountered 7' of snow. Only 1 wheel was spinning? If i hold down the brakes and do a burnout both wheels spin?


sounds like you need new clutches.. Average life span is around 50k-75k
_________________________
1993 Lincoln Town Car 150k+ - RIP 5/10/2011
1998 Ford Crown Victoria P71 - RIP 12/25/2006
2001 Ford Crown Victoria P71(Count blackula) 297k+ - Ummmmmm evil

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#1692494 - 02/18/09 02:27 PM Re: whats my gear ratio [Re: 98VicP71]
RiceBurnt6 Offline
Poobah

Registered: 10/21/08
Posts: 5079
Loc: SWMI
Great \:\( How difficult is it to replace the clutches, and Where can i find the kit?
_________________________
Originally Posted By: RiceBurnt6
You're getting mad at the content of a thread of which you clicked on? Maybe you need to get a life? Yes?

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#1692607 - 02/18/09 05:45 PM Re: whats my gear ratio [Re: RiceBurnt6]
ludwigvan968 Offline
Over the Hill

Registered: 04/08/07
Posts: 1141
Loc: Austin, Tx
adtr.net sells them, get the carbon ones they rock!
_________________________
96 GM HPP 206K mi.(chassis), Tuned by Manny at HPP, 76mm DBB PT, SQV BOV, Accufab TB/UP, Tial 44mm WG, 3" Intake and 3" Single Exhaust piping, PI Intake, PI Cams, MMR Stainless Valves, Manley Springs, P&P PI Heads, Forged Rods and Pistons, 90mm Lightening MAF and injectors (42lbs), 255 Walbro, BOC Trans, BOC Stage II TC 3,000 stall, 3.73, Trac-Loc, Cobra Carbon Clutches, AMMX driveshaft, SCT Xcal II J-Tune, Transmission cooler, PowerSlot Brakes, ENS front control arm bushings, Addco Front and Rear Swaybars, Poly Endlinks and Clamps, Front and Rear Bilstien Shocks, F/R PI springs, Rear ENS Control Arm Bushings, custom structural re-enforcement(stabilizer bar mounts and lower control arm mounts, among other spots), Custom Boxed Lower Rear Control Arms, Kenwood HU, Alpine Type R 5X7's, Kicker Comp 6X9's,Alpine 4X50, Crunch 1100 subwoofer Amp, Image Dynamics 12" subwoofer, Yellow Top



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#1692827 - 02/18/09 11:07 PM Re: whats my gear ratio [Re: ludwigvan968]
innertwist Offline
n00b

Registered: 06/13/07
Posts: 35
Loc: Huntersville, NC
I'm confused. My door sticker has 'X5' for the axle as well, but it's definitively not a locker (I've changed the gear oil - no clutches). It's a 1997. Is it still a 3.27? Should it have an LSD based on the code on the door?

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#1692886 - 02/19/09 12:39 AM Re: whats my gear ratio [Re: innertwist]
dRock96Marquis Offline


Posting Addict

Registered: 02/22/05
Posts: 24394
Loc: Maryland
 Originally Posted By: innertwist
I'm confused. My door sticker has 'X5' for the axle as well, but it's definitively not a locker (I've changed the gear oil - no clutches). It's a 1997. Is it still a 3.27? Should it have an LSD based on the code on the door?


No, the code doesn't have the same description every year - hence the confusion.

On the OP's 2001 it's a 3.27 w/ traction-lok


On your '97 it should be a 3.27 OPEN differential.

Look at the tag on the diff cover to confirm
_________________________
-Derek
-Panther info & FAQs-



Former owner of a Grand Marquis with a few mods, Grand Marquis "LSE S/C"

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#1692898 - 02/19/09 01:04 AM Re: whats my gear ratio [Re: dRock96Marquis]
hotrodjcc Offline
Over the Hill

Registered: 03/07/08
Posts: 2337
Loc: DFW, TX
Sean i know a shop in lexington who will do a gear swap for you for a decent price. He swapped my gears out
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2003 Cobra: cold air, catback,2.8in pulley, O/R upr x pipe,Accufab TB/Plenum and hurst shifter only. #5983
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