5R55E Swap - TCCoA Forums
 
LinkBack Thread Tools
post #1 of 6 (permalink) Old 09-21-2003, 01:39 PM Thread Starter
Boom.

Moderator
 
Palmguy's Avatar
 
Join Date: Dec 2002
Location: Niceville, FL
Age: 34
Posts: 5,238
5R55E Swap

Maybe I'm just dreaming here, but that's why I'm asking. I've been driving my dad's '99 Explorer for the last few days and I really love it, specifically the tranny. The five-speed auto does a great job of keeping the SOHC 4.0L V6 in it's powerband, and it is sweet to get on it and a shift only drop the RPMs drop a couple of hundred instead of a couple of thousand on our wide-ratio transmissions.

Here's the question: There is a 5R55E that will bolt to a 4.6 block ('02-04 4.6L Explorers), so is it possible without too much extra effort to put this bad boy in? I assume that I will need a new DS and computer work, but how about the crossmember etc.?

No one has ever seriously brought this up here, and I may just volunteer myself to be a guinea pig if I can get some more info on it.

5R55E Gear Ratios:

1st: 3.22
2nd: 2.32
3rd: 1.55
4th: 1.00
5th: 0.71
R: 3.07

Sounds like fun! Should feel quicker off the line with the 3.22 1st gear ratio versus our 2.84.

TCCoABAMFC - Founding Member
Official Member of the TCCoA Evil Underground Moderator Conspiracy
TCCoA Gun Club

2003 Mach 1 - 4.6L DOHC V8/4R70W

1995 Cougar XR7 - PI 4.6L SOHC V8
Palmguy is offline  
Sponsored Links
Advertisement
 
post #2 of 6 (permalink) Old 09-21-2003, 03:37 PM
Pedal Faster
 
Josh_Keady's Avatar
 
Join Date: Jul 2002
Location: No. Oregon
Age: 35
Posts: 2,658
Send a message via AIM to Josh_Keady
I saw one of those in a tranny shop the other day, and I may be wrong, but it looked WAY bigger than either the 4R70W or the AOD, even the C6 (which people have kind of determined won't fit in the MN-12 without modification to the floor pan.)

I don't know though, it might work... someone needs to get the dimensions on both first.

Josh Keady

1994 Super Coupe ('93 5.0L swap), 1990 Tbird 3.8L, 1982 Honda CB900F, 1972 F-100 SportCustom 4x4, 1970 Chevy Custom Camper / 20
Josh_Keady is offline  
post #3 of 6 (permalink) Old 09-21-2003, 04:39 PM
Refrigerator Raider Hater
Moderator
 
GreenBird's Avatar
 
Join Date: Jul 2002
Location: Vermont
Age: 36
Posts: 11,719
You'd probably need a shortened driveshaft too.

Not sure, but if I am deciphering the trans model # correctly, it wouldn't stand up to as much torque. Probably plenty for a semi-stock bird though.




Matt "Looks Like Egon" Davis
96 Alpine Green V8
98 Audi A8 4.2Q in Racing Green Totalled
02 Audi A8L 4.2Q in Black

I buy my OEM Ford parts at 10% over dealer cost from Steve in White Bear Lake, MN.
You drive "like a man possessed"... by a woman!
GreenBird is offline  
Sponsored Links
Advertisement
 
post #4 of 6 (permalink) Old 09-21-2003, 05:05 PM
PostWhore
 
Join Date: Apr 2003
Location: O'Fallon, MO
Age: 38
Posts: 1,411
According to what I've found, the 5R55E's gear ratios are:
1 - 2.47
2 - 1.87
3 - 1.47
4 - 1.00
5 - 0.75

The 5R55W's gear ratios are:

1 - 3.22
2 - 2.41
3 - 1.55
4 - 1.00
5 - 0.75

Only problem with the 5R55's is they seem to be sealed "maintenance-free" transmissions...

'95 Cougar - 2002 Explorer engine, 2004 Mustang PTP2 PCM

Best times:
PI 4.6L 95 XR7 Cougar: [email protected]
2004.5 Silverado Crew Cab/Long Bed/4x4 6.6L Duramax: [email protected] (Weighing in at over 7200#) on 10/19/2007
Dyno - 446.4RWHP/820.2RWTq on 6/13/2008
Pulling - 300.9' 3rd place finish 8/2011

Last edited by Cougar281; 09-21-2003 at 05:10 PM.
Cougar281 is offline  
post #5 of 6 (permalink) Old 09-21-2003, 07:24 PM Thread Starter
Boom.

Moderator
 
Palmguy's Avatar
 
Join Date: Dec 2002
Location: Niceville, FL
Age: 34
Posts: 5,238
Quote:
Originally posted by GreenBird
You'd probably need a shortened driveshaft too.

Not sure, but if I am deciphering the trans model # correctly, it wouldn't stand up to as much torque. Probably plenty for a semi-stock bird though.
That's what I was thinking too...although it would be enough for me I think. I'll have an Explorer 4.6 parked in front of whatever trans. I get, with no plans for power adder or serious rebuild anytime in the next few years.

I'll probably end up with just a newer 4R70W, but it sure is nice to think about.

I just found some more info on the gear ratios, you are right about them. I guess the previous source that I had read was completely wrong.

After thinking about it, it would be more complicated than what I want to do now. Maybe if someone has the opportunity they can work on this and see what is necessary. A new driveshaft is all but guaranteed, and the shifter would be difficult to rig I imagine as all vehicles equipped with this transmission have column shifters.

I'll put in a post-'98 4R70W now and maybe get a 5R in the future.

TCCoABAMFC - Founding Member
Official Member of the TCCoA Evil Underground Moderator Conspiracy
TCCoA Gun Club

2003 Mach 1 - 4.6L DOHC V8/4R70W

1995 Cougar XR7 - PI 4.6L SOHC V8
Palmguy is offline  
post #6 of 6 (permalink) Old 09-21-2003, 07:43 PM
PostWhore
 
Join Date: Apr 2003
Location: O'Fallon, MO
Age: 38
Posts: 1,411
If the transmission will physically fit in the MN-12's, theoretically, the electronics would be easy to work out if you got something like a Baumannator TCS (if/when they support the 5R55. Who knows? Maybe with a wiring harness mod and some programming, maybe our stock EEC's could run the 5R55's (Probably not, though) I drove an '02 Explorer when I was on a buisiness trip in California, and liked the feel of the 5 speed auto... I wouldn't mind having one in my Cougar...

'95 Cougar - 2002 Explorer engine, 2004 Mustang PTP2 PCM

Best times:
PI 4.6L 95 XR7 Cougar: [email protected]
2004.5 Silverado Crew Cab/Long Bed/4x4 6.6L Duramax: [email protected] (Weighing in at over 7200#) on 10/19/2007
Dyno - 446.4RWHP/820.2RWTq on 6/13/2008
Pulling - 300.9' 3rd place finish 8/2011
Cougar281 is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the TCCoA Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in











Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome