Changing out a worn transmission...
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Modular motor junkie
Joined: May 2009
Posts: 6,190
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From: Texas
Changing out a worn transmission...
Monday I'm pickup an 01 5.4 2wd F150 with a slipping tranny.
The owner is wanting to pick it back up from me the next day.
Now here is the question: I have two of these transmissions in my shop.
They are both out of crown vics. One came out of an 01 and the other an 04. They are both the long tail shaft police interceptor style.
What needs to be done to put one of those trannys in the F150?
I'm using the F150s TC and electronics that bolt to the tranny along with its pan. If the tail shaft is diffrent I will change it too.
Is there anything else I need to worry about?
Thanks.
The owner is wanting to pick it back up from me the next day.
Now here is the question: I have two of these transmissions in my shop.
They are both out of crown vics. One came out of an 01 and the other an 04. They are both the long tail shaft police interceptor style.
What needs to be done to put one of those trannys in the F150?
I'm using the F150s TC and electronics that bolt to the tranny along with its pan. If the tail shaft is diffrent I will change it too.
Is there anything else I need to worry about?
Thanks.
Post Fiend
Joined: Jan 2007
Posts: 18,157
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From: Stanton DE
If the tranys your putting in are 4R70 tranys they should work.
I have no idea what your talking about a longer tail shaft.
But If it dose have a longer tail shaft then the one your replacing, the only way to change a tail shaft is totally disassemble both tranys.
Dont think you want to mess with that. You might as well have the current trany rebuilt if that is the case.
I have no idea what your talking about a longer tail shaft.
But If it dose have a longer tail shaft then the one your replacing, the only way to change a tail shaft is totally disassemble both tranys.
Dont think you want to mess with that. You might as well have the current trany rebuilt if that is the case.
Thread Starter
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Modular motor junkie
Joined: May 2009
Posts: 6,190
Likes: 8
From: Texas
There are at least three 4r70w tail shafts. One for the 4x4 trucks, one for the mustang, crown vic and town car, and a third one for the police interceptor and Mercury Maruader.
They use a longer tail shaft and shorter drive shaft than a normal crown vic to cut down on drive line strain and vibration at 120+ MPH.
The 2wd trucks might be a forth diffrent one, I'm not sure becuase I have never seen the crown vic/mustang tail shaft to see if they are the same or not.
I just got both out and put them side by side. The F150s is 12.5 " and the CVPI/MM tail shaft is 13.5".
The truck must be back together today too.
They use a longer tail shaft and shorter drive shaft than a normal crown vic to cut down on drive line strain and vibration at 120+ MPH.
The 2wd trucks might be a forth diffrent one, I'm not sure becuase I have never seen the crown vic/mustang tail shaft to see if they are the same or not.
I just got both out and put them side by side. The F150s is 12.5 " and the CVPI/MM tail shaft is 13.5".
The truck must be back together today too.
Post Fiend
Joined: Jan 2007
Posts: 18,157
Likes: 0
From: Stanton DE
From my understanding, the tail shaft is the first thing to go in the tranny and the last thing to come out. So you would need to take apart 2 tranys and put one back together in a day.
Maybe you can find a shorter driveshaft?
Maybe you can find a shorter driveshaft?
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Modular motor junkie
Joined: May 2009
Posts: 6,190
Likes: 8
From: Texas
I have everything here to cut the drive shaft down an inch and weld and balence it. I think thts the best way to go from here.
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Modular motor junkie
Joined: May 2009
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From: Texas
Ok, Its all in and everything works other than one thing.
The speedo reads 5X the speed I'm really going.
I used the shift postion sensor and what I thought was the speed sensor off the old transmission. Whats the deal? I'm also starting a new thread becuase I am in an extreame time crunch.
The speedo reads 5X the speed I'm really going.
I used the shift postion sensor and what I thought was the speed sensor off the old transmission. Whats the deal? I'm also starting a new thread becuase I am in an extreame time crunch.
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