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#4075580 - 08/26/20 07:36 AM 09 and up transmission
symonds86 Offline
n00b

Registered: 07/31/20
Posts: 25
Loc: NY
looking at the p71interseptor.com trans id chart it says 09 trans can be used in an 07 08 if you have the plug or harness, does anyone know if the 2010 and up transmissions will fit?
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wrecked 2008 p71 transplanted into 73 f100

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#4075600 - 08/26/20 11:29 AM Re: 09 and up transmission [Re: symonds86]
Davidzq Online   happy
Member

Registered: 01/19/15
Posts: 286
Loc: Seattle, WA
Transmission swap years are 05-08 and 09-11. You can swap between them with a little extra work, as the only difference is in the electrical. In 09, they switch back to a soft wiring harness instead of the rigid plastic harness used in 08-. This required changing the bulkhead connector and all the solenoids (different connectors).

There are two ways to do this.

One is to drop the pan, and swap all the internal electrical components. You'll need to drop the valve body to swap the EPC, but it's a pretty easy job. Also let's you inspect the new transmission. I recommend performing a Jmod at the same time.

The other way is to simply splice the other style connector onto your car.
The colors mostly line up, but there is some differences.
08- - 09+
Red - red/yellow
Pink/yellow - violet/yellow
Grey/red - grey/red
Orange/black - orange/black
Orange/yellow - orange/yellow
Pink/orange - violet/orange
White/yellow - white/yellow
_________________________
David Hensley
Member of Northwest Panthers Car Club

2007 P71, Norsea Blue SAP
-Jmod
-Message Center cluster retrofit
-All interior lighting converted to blue
-Lincoln towncar seats, heated and power passenger
-Self installed Compustar remote start/security
-Full dynamat install
-Full interior swap from tan to charcoal
-Trailer hitch/light controller/AirLift assist bags
-Headlight relay mod

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#4075608 - 08/26/20 12:10 PM Re: 09 and up transmission [Re: symonds86]
symonds86 Offline
n00b

Registered: 07/31/20
Posts: 25
Loc: NY
Thank you! Exactly what i needed to know
_________________________
wrecked 2008 p71 transplanted into 73 f100

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#4075610 - 08/26/20 01:34 PM Re: 09 and up transmission [Re: symonds86]
Davidzq Online   happy
Member

Registered: 01/19/15
Posts: 286
Loc: Seattle, WA
Also bear in mind that p71s and Towncars have long tail transmissions.
Civilian Vic's and Grand Marquis have short tail transmissions. To use these, you must either swap in the longer steel driveshaft or use a driveshaft spacer (available from ADTR).
The transmissions are otherwise identical.
_________________________
David Hensley
Member of Northwest Panthers Car Club

2007 P71, Norsea Blue SAP
-Jmod
-Message Center cluster retrofit
-All interior lighting converted to blue
-Lincoln towncar seats, heated and power passenger
-Self installed Compustar remote start/security
-Full dynamat install
-Full interior swap from tan to charcoal
-Trailer hitch/light controller/AirLift assist bags
-Headlight relay mod

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#4075616 - 08/26/20 02:18 PM Re: 09 and up transmission [Re: symonds86]
symonds86 Offline
n00b

Registered: 07/31/20
Posts: 25
Loc: NY
I didnt know the towncar used the long tail as well that gives me another option. I have read you can put a long tail housing on a short tail trans and run the aluminum driveshaft, do you know it this is true? I have never had the tail housing off both type to see in the output shaft is the same length. I am running a 2 piece driveshaft in my truck so I will have to have the shaft lengthened if I go with the short tail. But it may be worth it they seem alot easier to find.
_________________________
wrecked 2008 p71 transplanted into 73 f100

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#4075624 - 08/26/20 04:03 PM Re: 09 and up transmission [Re: symonds86]
RF_Overlord Offline

Poobah

Registered: 12/14/02
Posts: 7258
Loc: MA
Bear with me as I'm not 100% on this, bur my understanding is that if you put a long housing on a short transmission, the front yoke will only engage the splines on the output shaft for a short distance. This is apparently acceptable as long as you don't drive like a maniac. Ideally, you would need to swap in the long output shaft, but this involves disassembly of the transmission.

Hopefully, 88grandmarq will chime in. He's the resident 4R70W guru.
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'03 Mercury Marauder (The Blackbird)
Trilogy Motorsports supercharged #61
Too many mods to list / Driveway Queen

'04 Grand Marquis LS Limited Edition (Spruce Green)
Daily Driver (Thanks, Adam!)

'00 Grand Marquis GS (Silver)
Rotted frame and broken transmission crossmember
Being resurrected...slowly.

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#4075630 - 08/26/20 04:23 PM Re: 09 and up transmission [Re: symonds86]
symonds86 Offline
n00b

Registered: 07/31/20
Posts: 25
Loc: NY
that makes sence. I plan to add a supercharger later on this winter so that makes me a bit nervous.
_________________________
wrecked 2008 p71 transplanted into 73 f100

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#4075638 - 08/26/20 04:57 PM Re: 09 and up transmission [Re: RF_Overlord]
Lance01 Offline
Member

Registered: 04/02/18
Posts: 390
Loc: Pa
Originally Posted By RF_Overlord
Bear with me as I;m not 100% on this, bur my understanding is that if you put a long housing on a short transmission, the front yoke will only engage the splines on the output shaft for a short distance. This is apparently acceptable as long as you don't drive like a maniac. Ideally, you would need to swap in the long output shaft, but this involves disassembly of the transmission.

Hopefully, 88grandmarq will chime in. He's the resident 4R70W guru.


Darrin Burch at BC automotive who is also an expert AOD/4r70w transmission builder already explained this in on another forum in that it's a huge no no to do this. A serious automotive accident and injury can result in trying to jerry rig a short tailshaft to be a long or vice versa.

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#4075656 - 08/26/20 06:43 PM Re: 09 and up transmission [Re: symonds86]
Davidzq Online   happy
Member

Registered: 01/19/15
Posts: 286
Loc: Seattle, WA
RF has it right, it's not the tail housing that matters, it's the output shaft within it. And he's right again when he says the tranny must be fully disassembled to swap the shaft. So it's not worth even trying, at that point it's just as easy to rebuild the original tranny.

Usually this is easily remedied by using the driveshaft spacer to use the shorter driveshaft on the shorter tail, but that wouldn't be an option for your two piece driveshaft, unless you want to move the center mount forward.
Or maybe you can shim the center mount to straighten the driveshaft which would make it a little longer.
_________________________
David Hensley
Member of Northwest Panthers Car Club

2007 P71, Norsea Blue SAP
-Jmod
-Message Center cluster retrofit
-All interior lighting converted to blue
-Lincoln towncar seats, heated and power passenger
-Self installed Compustar remote start/security
-Full dynamat install
-Full interior swap from tan to charcoal
-Trailer hitch/light controller/AirLift assist bags
-Headlight relay mod

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#4075666 - 08/26/20 07:59 PM Re: 09 and up transmission [Re: symonds86]
symonds86 Offline
n00b

Registered: 07/31/20
Posts: 25
Loc: NY
Good to know it's a no go that's what I wanted to know. I will just have to decide to find another long tail trans or switch everything to work with the short tail. I can deff make the drive shaft work. I have a 2018 mustang rear irs that i plan to put in this winter also so the driveshaft may or may not need to change anyway. Thanks for the info, I appreciate it.
_________________________
wrecked 2008 p71 transplanted into 73 f100

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#4075680 - 08/26/20 11:25 PM Re: 09 and up transmission [Re: Davidzq]
Lance01 Offline
Member

Registered: 04/02/18
Posts: 390
Loc: Pa
Originally Posted By Davidzq
RF has it right, it's not the tail housing that matters, it's the output shaft within it. And he's right again when he says the tranny must be fully disassembled to swap the shaft. So it's not worth even trying, at that point it's just as easy to rebuild the original tranny.

Usually this is easily remedied by using the driveshaft spacer to use the shorter driveshaft on the shorter tail, but that wouldn't be an option for your two piece driveshaft, unless you want to move the center mount forward.


Or maybe you can shim the center mount to straighten the driveshaft which would make it a little longer.


+1


Edited by Lance01 (08/26/20 11:25 PM)

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#4075688 - 08/27/20 02:04 AM Re: 09 and up transmission [Re: symonds86]
Lance01 Offline
Member

Registered: 04/02/18
Posts: 390
Loc: Pa
Originally Posted By symonds86
Good to know it's a no go that's what I wanted to know. I will just have to decide to find another long tail trans or switch everything to work with the short tail. I can deff make the drive shaft work. I have a 2018 mustang rear irs that i plan to put in this winter also so the driveshaft may or may not need to change anyway. Thanks for the info, I appreciate it.


I just picked up a 4r70w from the yard about 2 weeks ago. Long tailshaft from a Towncar. Has only 89k on it. Got it for 250$.


Regardless if you go long or short take a look at the upgraded hard parts from Sonnax since you said you were looking to go the route of supercharging so it will hold up.

https://www.sonnax.com/parts/4646-smart-tech-direct-clutch-drum-shaft-kit

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#4075704 - 08/27/20 10:38 AM Re: 09 and up transmission [Re: symonds86]
symonds86 Offline
n00b

Registered: 07/31/20
Posts: 25
Loc: NY
I am thinkin I will try to find a long tail replacement to keep it driveable andthen I can rebuild what I have to hold more power. I called a couple shops and they wanted 1500 to do a stock rebuild if i pulled it it for them, and that didnt include bad hard parts. I Did a few transmission rebuilds in college, and did some powerglides during my breif wannabe dirt track racing career but that was over 10 years ago. Can anyone recommend a good book on the 4r75e, I think it will be worth looking into doing myself.
_________________________
wrecked 2008 p71 transplanted into 73 f100

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#4075820 - 08/27/20 11:19 PM Re: 09 and up transmission [Re: symonds86]
Lance01 Offline
Member

Registered: 04/02/18
Posts: 390
Loc: Pa
Originally Posted By symonds86
Can anyone recommend a good book on the 4r75e, I think it will be worth looking into doing myself.


Everything is right here:

https://www.crownvic.net/ubbthreads/ubbthreads.php?ubb=showflat&Number=4065026#Post4065026

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