4r100 compatibility
Thread Starter
|
Tuned
Joined: Sep 2010
Posts: 473
Likes: 0
From: Farmington, MO
4r100 compatibility
Just want to make sure all this information is accurate. Any gasser 4r100 is interchangeable (with modification of the pump) from 98 to 04. The diesel 4r100 is interchangeable regardless from 99-03 (mid year). 4wd to 4wd, 2wd to 2wd.
Just trying to make sure so I can widen my search for a transmission as much as possible. Truck to receive is a 2002 F350 4wd.
That is what I've gathered from my searching.
Just trying to make sure so I can widen my search for a transmission as much as possible. Truck to receive is a 2002 F350 4wd.
That is what I've gathered from my searching.
Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,704
Likes: 2,625
From: SE Florida
A 4R100 from a 5.4L will bolt in place of a trans from a 6.8L. The problem comes in when you try to drive it. The 5.4L trans is not as strong as the 6.8L trans. A 6.8L will tear up a 5.4L trans in a very short time. A trans from a 6.8L will fit and work behind a 5.4L, but many of the shifts are going to be harsh because the trans has more capacity than the 5.4L needs.
You are correct on the 7.3L.
The exceptions are that the early '99 trans has a different solenoid pack, pump, and torque converter. It also doesn't have the two speed sensors, which the later control system MUST have for the trans to operate.
You are correct on the 7.3L.
The exceptions are that the early '99 trans has a different solenoid pack, pump, and torque converter. It also doesn't have the two speed sensors, which the later control system MUST have for the trans to operate.
Posting Guru
Joined: Nov 2008
Posts: 1,229
Likes: 2
From: Oregon
A 4R100 from a 5.4L will bolt in place of a trans from a 6.8L. The problem comes in when you try to drive it. The 5.4L trans is not as strong as the 6.8L trans. A 6.8L will tear up a 5.4L trans in a very short time. A trans from a 6.8L will fit and work behind a 5.4L, but many of the shifts are going to be harsh because the trans has more capacity than the 5.4L needs.
You are correct on the 7.3L.
The exceptions are that the early '99 trans has a different solenoid pack, pump, and torque converter. It also doesn't have the two speed sensors, which the later control system MUST have for the trans to operate.
You are correct on the 7.3L.
The exceptions are that the early '99 trans has a different solenoid pack, pump, and torque converter. It also doesn't have the two speed sensors, which the later control system MUST have for the trans to operate.
Freshman User
Joined: Sep 2017
Posts: 42
Likes: 0
Not relevant to the OP, but if this thread is found later in a search, this pertains to 2wd...
7.3L vans use the same 4R100 trans as 7.3L F250/350, BUT the tail shaft is different, smaller than the trucks. The sensors on the later ones may be in different locations, but will work, according to my trans guy. To put a van trans in a truck, you will need the correct slip-in yoak for the driveshaft.
7.3L vans use the same 4R100 trans as 7.3L F250/350, BUT the tail shaft is different, smaller than the trucks. The sensors on the later ones may be in different locations, but will work, according to my trans guy. To put a van trans in a truck, you will need the correct slip-in yoak for the driveshaft.
New User
Joined: Jan 2021
Posts: 3
Likes: 0
4r100 case compatibility
I have a 2003 F350 6.8L 4x4 that the bell housing cracked badly. I'm courious as my transmission had low mileage, an the insides are still in great shape. If I took any 4R100 case, wether it be from a Lincoln navigator or something. If i could put my parts from inside my trans an install them into the other vehicles 4R100. An still have just as strong as a transmission as before?
Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,704
Likes: 2,625
From: SE Florida
Yes, you would. If the case has the modular engine bolt pattern, and not all 4R100s did, it will work. The only difference in the cases is the bolt pattern on the bellhousing.
Trending Topics
Lead Driver
Joined: Mar 2010
Posts: 5,504
Likes: 256
From: Woodbridge, Ontario, CA
I have a 2003 F350 6.8L 4x4 that the bell housing cracked badly. I'm courious as my transmission had low mileage, an the insides are still in great shape. If I took any 4R100 case, wether it be from a Lincoln navigator or something. If i could put my parts from inside my trans an install them into the other vehicles 4R100. An still have just as strong as a transmission as before?
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
10 Most Surprising 2026 Ford Truck Features!
Joe Kucinski
Top 10 Ford Trucks Coming to Mecum Indy 2026
Brett Foote
5 Best / 5 Worst Ford Truck Wheels of All Time
Joe Kucinski
New User
Joined: Jan 2021
Posts: 3
Likes: 0
Theres a scrap yard near me that sells "re-buildable" transmissions for only $150. Just meaning the insides are worn out. An I figured after taking my transmission out I've noticed the cluthes an everything is in good shape still, just the case is now bad. An the scrap yard has a few transmissions from a navigator, an possibly from a excursion. To rebuild it it would only cost me about $400 in parts online. I just wasnt sure if I took a transmission from another rig an not a F250 or F350 just from like a navigator, as the bolt pattern is the same an it's a 4R100 trans to. I just wasnt sure if I'd still have the same pulling power, as I've heard just cause it's a 4R100 doesn't mean it would have the same pulling power behind it. As one from a F350.. just wasnt sure is all or if I was told false information. I figure if it was a 4R100 it would be the same transmission even if I was pulled from a F150 or F350
New User
Joined: Jan 2021
Posts: 3
Likes: 0
Oh ok, thank you guys! I appreciate the information 😊 I'm definitely glad to know that switching the parts over is possible due to the cases are the same. I couldnt find the answer I needed else where,no matter how hard I searched.
New User
Joined: Mar 2022
Posts: 1
Likes: 0
Truck to van?
I have a ‘99 E350 Super Duty 7.3L. We’re doing a Ujoint Offroad 4x4 conversion and I’m trying to figure out if I can take a 4x4 tranny from a Super Duty F250/350 and put it in the van with little to no modifications?