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#4068656 - 06/25/20 01:41 PM 99-04 Mustang Rear End on '04 Crown Vic?
YoungP71dude Offline
Rookie

Registered: 08/16/19
Posts: 67
Loc: Charlotte, NC
Hey y'all,

A guy in my area on Facebook Marketplace has a parts New Edge Mustang listed for sale. It's basically been parted out except for the wheels and the rear end, which is an 8.8 3.73 rear end. How hard would it be to put the rear on my '04 Crown Vic? It's currently sporting an open-diff 3.27.

Thanks.


Edited by YoungP71dude (06/25/20 01:49 PM)
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The Crown Vic - America's Sedan, the 4-Door Mustang, the Truck with a Trunk, the Submarine of the Road, and unpredictable when put in the hands of a 15-year old.

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#4068704 - 06/25/20 08:37 PM Re: 99-04 Mustang Rear End on '04 Crown Vic? [Re: YoungP71dude]
ClayBelt Online   content

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You can’t swap the rear axle assembly, but you can swap the gears and carrier into your rear axle assembly,y
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#4068740 - 06/26/20 06:36 AM Re: 99-04 Mustang Rear End on '04 Crown Vic? [Re: YoungP71dude]
2008interceptor Offline
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Registered: 09/02/02
Posts: 3100
Loc: Pennsylvania
One thing to check is the condition of the clutches in that differential. Also if you change gears you'll need a tune. Otherwise the spedo and shifting will be off.
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#4068778 - 06/26/20 03:50 PM Re: 99-04 Mustang Rear End on '04 Crown Vic? [Re: ClayBelt]
BigMerc96 Offline

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Originally Posted By ClayBelt
You can’t swap the rear axle assembly, but you can swap the gears and carrier into your rear axle assembly,y
Yep. Only thing to watch is whether its a 28 or 31-spline carrier, not sure when the Mustangs changed. If its a 31-spline, you'll need new axles for it to work in your '04, but luckily enough '05.5+ Panther axle shafts are a direct swap for a '03-'04 and are 31-spline if need-be.
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#4068810 - 06/26/20 09:55 PM Re: 99-04 Mustang Rear End on '04 Crown Vic? [Re: BigMerc96]
YoungP71dude Offline
Rookie

Registered: 08/16/19
Posts: 67
Loc: Charlotte, NC
Originally Posted By BigMerc96
Only thing to watch is whether its a 28 or 31-spline carrier, not sure when the Mustangs changed. If its a 31-spline, you'll need new axles for it to work in your '04, but luckily enough '05.5+ Panther axle shafts are a direct swap for a '03-'04 and are 31-spline if need-be.

Looked it up, all Mustangs '79-04 are 28 spline axles.

I'll see what the guy's asking for them, see the condition of the clutches, and if all checks out, that will be the first real mod to the Vic.
_________________________
2004 Ford Crown Victoria P71 "Anakin" - 8/12/2019-present - 83,000 miles
"I want a Marauder so I can name it Darth Vader."

The Crown Vic - America's Sedan, the 4-Door Mustang, the Truck with a Trunk, the Submarine of the Road, and unpredictable when put in the hands of a 15-year old.

Top
#4068850 - 06/27/20 08:53 AM Re: 99-04 Mustang Rear End on '04 Crown Vic? [Re: YoungP71dude]
2008interceptor Offline
Over the Hill

Registered: 09/02/02
Posts: 3100
Loc: Pennsylvania
03-04 mustang svt cobra diffs are 31 spline with carbon fiber clutches. I've got a brand new one in my 08. Be sure to check 28 or 31 people do swap them as well. That being said having limited slip is a great thing to have on these cars.
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2008 Ford Crown Victoria Police Interceptor P71 with street appearance package.

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#4068862 - 06/27/20 10:21 AM Re: 99-04 Mustang Rear End on '04 Crown Vic? [Re: 2008interceptor]
YoungP71dude Offline
Rookie

Registered: 08/16/19
Posts: 67
Loc: Charlotte, NC
Originally Posted By 2008interceptor
03-04 mustang svt cobra diffs are 31 spline with carbon fiber clutches. I've got a brand new one in my 08. Be sure to check 28 or 31 people do swap them as well. That being said having limited slip is a great thing to have on these cars.


The car listed is a regular New Edge GT, so it should still work just fine.
_________________________
2004 Ford Crown Victoria P71 "Anakin" - 8/12/2019-present - 83,000 miles
"I want a Marauder so I can name it Darth Vader."

The Crown Vic - America's Sedan, the 4-Door Mustang, the Truck with a Trunk, the Submarine of the Road, and unpredictable when put in the hands of a 15-year old.

Top

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