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3.73 to 4.10 gears 2002 civilian vic
01-03-2018, 06:05 PM (This post was last modified: 01-03-2018 06:07 PM by ksurf_k.)
Post: #11
RE: 3.73 to 4.10 gears 2002 civilian vic
(01-03-2018 05:44 PM)BlackVic_P71 Wrote:
 
(01-03-2018 03:08 PM)ksurf_k Wrote:
 
all great info, how do i read my vin 3's to know what i have in my 99 and my 2002?

That link there has a door sticker decoder, look at the axle code on your door sticker and it'll tell you what you have.
If going to 3.73 or 4.10, it's recommended to use an aluminum driveshaft

oh i see the link , i will check it out thankyou!, my 99 door sticker is readable, the 2002 may take a while to figure out, somehow its all blurry and faded. im betting both my cars have the lower torque rear end... but the 99 feels more torquey could be pcm tune, i think its an lx where the 02 is base basic
Kenny 491304- 1999 crown vic (back burner project) with 260,100 miles planning on it to be my drive to work/beater/race car mode/parts kick around car, Also have a nice 2002 crown vic 182,000 miles with 200 lb weight delete, & love it!
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01-04-2018, 12:02 PM
Post: #12
RE: 3.73 to 4.10 gears 2002 civilian vic
(01-03-2018 12:13 PM)BlackVic_P71 Wrote:
 
X15, never heard of that. DK is 3.55 trac-lok though.
http://www.idmsvcs.com/liquid/data.html

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Dunno, that website is a little odd using. I'll need to get a shot of my door sticker at lunch to see if anything different is to be had but my VIN 2FAHP71W37X156545 seems to be an odd one if you saw my ETIS question from not long after I joined. Still have never gotten an answer to that one. I do know now according to that site that mine is #156545 in the production sequence.
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01-05-2018, 07:15 PM
Post: #13
RE: 3.73 to 4.10 gears 2002 civilian vic
Am i wrong that the 8.8 rear diff's i could expect to find in the civilian base and civilian lx, would most likely be 2.73? Its been a winter wonderland this week, so i havent checked my 99's door sticker, the 2002 in completely unreadable.
Kenny 491304- 1999 crown vic (back burner project) with 260,100 miles planning on it to be my drive to work/beater/race car mode/parts kick around car, Also have a nice 2002 crown vic 182,000 miles with 200 lb weight delete, & love it!
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01-06-2018, 02:41 AM
Post: #14
RE: 3.73 to 4.10 gears 2002 civilian vic
2.73s were the standard equipment ratio for the base and LX Vics. Some were probably optioned otherwise for towing, etc.
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01-06-2018, 08:56 AM
Post: #15
3.73 to 4.10 gears 2002 civilian vic
Not sure when the tow package was done away with, but mine(1989) came with 3.55. Limo package TC was 3.55, 31 spline and drum rear in the early years(aero). Highest I thought available for whales is 3.27 in HPP or Sport, aside from police.

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01-06-2018, 07:52 PM
Post: #16
RE: 3.73 to 4.10 gears 2002 civilian vic
thanks guys. i believe my old 94 towncar definately had 2.73, the base 2002 vic feels like a 2.73, but the 99 might have a different diff its got more of a lets boogy feeling, but could be factory tuning also.
Kenny 491304- 1999 crown vic (back burner project) with 260,100 miles planning on it to be my drive to work/beater/race car mode/parts kick around car, Also have a nice 2002 crown vic 182,000 miles with 200 lb weight delete, & love it!
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01-06-2018, 08:15 PM
Post: #17
RE: 3.73 to 4.10 gears 2002 civilian vic
Here’s a little trick I learned in determining your gear ratio while driving: at highway speeds, preferably at 70 mph, take a look at your rpms (if possible). If it’s running at or above 2000 rpms at 70mph, you have 3.27s or lower. If they’re between 1700-1800 rpms or less, then you have 2.73s. Regardless of what the tag on your differential cover might say, your engine’s running rpms will not lie.
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01-06-2018, 08:43 PM
Post: #18
3.73 to 4.10 gears 2002 civilian vic
My merc and vic have 3.55's and at 70 I run about 2300rpms

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01-13-2018, 09:06 AM
Post: #19
RE: 3.73 to 4.10 gears 2002 civilian vic
Thanks guys, using that decoder i was able to find the axle in my 99 has code c8 which decodes as a 2.73, my 2002 label is screwed up can not read one letter on the whole thing but im pretty sure its a 2.73 aswell. good for gas mileage at higher speeds atleast ha ha. tried to check my 98 ranger sticker cant make out what it says either but it does have a 8.8 rear diff.
Kenny 491304- 1999 crown vic (back burner project) with 260,100 miles planning on it to be my drive to work/beater/race car mode/parts kick around car, Also have a nice 2002 crown vic 182,000 miles with 200 lb weight delete, & love it!
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