DJRockit69
Well-Known Member
- Joined
- December 29, 2007
- Messages
- 158
- Reaction score
- 0
- City, State
- Fargo, ND
- Year, Model & Trim Level
- '96 ex 5.0 swap 4406 swap
Hey everyone
I am starting my swap from a 4r55e to a 5r55e in my 96 ford explorer tomarrow.
Ive been looking into this for a while now and hopefully I got all of my info correct I will be taking Pics and writing down information so If this does work I will have a thread for everyone posted so this question can be answered. Now for all the information Ive gathered so far will be listed Below for u.
Now the 2 trannys are similar internally and main differances are increased torque capacity for the 55E vs the 44E.
Before people start jumping on the fact that one is a 4 speed and the other is a 5 speed, they should have a good look at how the " 5th " gear is achieved. It's in the PCM. PCM commands the O/D band on in 1st to split the 1- 2 shift. So "2nd" is now 3rd and "3rd" is now 4th and so on. You will not have a 5 speed when you're done.
The 5R will shift the same as your 4R will. You will still have O/D gear same as the 4R. When you start comparing spec's, the 4R would shift 1-2-3-4. The 5R would shift 1-2-3-4-5 but in reality the 5R 3-4-5 gears are IDENTICAL to the 4R 2-3-4 gears. In fact, the early 5R's would shift 1-3-4-5 under part throttle and would shift 1-2-3-4-5 on hard throttle. 5R gets it's 2nd gear by overdriving 1st gear. Other than that, the gears ( and ratios ) are the same between the trannys.
The second gear( which only works under heavy acceleration)is computer controlled as far as i know you will only have 4 gears instead of 5..the valve bodies are the same its all controlled my computer strategy. Second gear in the 5R is 1st gear being overdriven(OD)...this tranny is capable of 6 speeds forward and 2 reverse.
And As far as the computer the swap will not be needed
The neutral safety switch will need to swaped for one that fits in my harness.
Well that most of the info I got wish me luck everyone I hope this swap goes as smoothly as I think it should Updates will be come over the next couple of days.
I am starting my swap from a 4r55e to a 5r55e in my 96 ford explorer tomarrow.
Ive been looking into this for a while now and hopefully I got all of my info correct I will be taking Pics and writing down information so If this does work I will have a thread for everyone posted so this question can be answered. Now for all the information Ive gathered so far will be listed Below for u.
Now the 2 trannys are similar internally and main differances are increased torque capacity for the 55E vs the 44E.
Before people start jumping on the fact that one is a 4 speed and the other is a 5 speed, they should have a good look at how the " 5th " gear is achieved. It's in the PCM. PCM commands the O/D band on in 1st to split the 1- 2 shift. So "2nd" is now 3rd and "3rd" is now 4th and so on. You will not have a 5 speed when you're done.
The 5R will shift the same as your 4R will. You will still have O/D gear same as the 4R. When you start comparing spec's, the 4R would shift 1-2-3-4. The 5R would shift 1-2-3-4-5 but in reality the 5R 3-4-5 gears are IDENTICAL to the 4R 2-3-4 gears. In fact, the early 5R's would shift 1-3-4-5 under part throttle and would shift 1-2-3-4-5 on hard throttle. 5R gets it's 2nd gear by overdriving 1st gear. Other than that, the gears ( and ratios ) are the same between the trannys.
The second gear( which only works under heavy acceleration)is computer controlled as far as i know you will only have 4 gears instead of 5..the valve bodies are the same its all controlled my computer strategy. Second gear in the 5R is 1st gear being overdriven(OD)...this tranny is capable of 6 speeds forward and 2 reverse.
And As far as the computer the swap will not be needed
The neutral safety switch will need to swaped for one that fits in my harness.
Well that most of the info I got wish me luck everyone I hope this swap goes as smoothly as I think it should Updates will be come over the next couple of days.
