Are 4R100 trans interchangeable amongst all 7.3s?
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From: Central Coast of CA
Stewart
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Mountain Pass
Joined: Oct 2005
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From: NH
The earlier ones had ON/OFF TCC. They went to a PWM(pulse width modulation) for variable torque converter lockup in 2000-2001ish. Dont know exactly when. Anyway, this may require a PCM swap. Does anyone know?
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From: Damon (South East Texas)
The PMW was added, at the start of production in '99, to the V-10 and diesel models for smoother TCC apply.
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Cargo Master
Joined: Feb 2005
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Alright, thanks for all the info guys. The reason I am asking is because I am considering purchasing another truck, specifically a DRW F350, but would want to swap my JW Trans into it. So I gather that I need to commit to looking for another 4x4. And as long as I stick with a 99 or later I don't have to worry about the PWM, right? Definitely some things I needed to know, thanks!
Tuned
Joined: Jan 2004
Posts: 419
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From: Jamestown, TN
Now why would you trade your truck for a DRW?Unless someone has bunged it up while you are in the dessert, it was a gorgeous Lariat. The DRW won't help you with pulling the 5er.
I have a friend that is looking for a truck exactly like yours now. I hate to tell you this, but I use your truck as the example of the high end.
There are some nice F350 DRW 2x4's in Nashville. Probably enough to buy a new tranny for the F350.
The grass is not greener on the other side of the dually fence
Lead Driver
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From: Damon (South East Texas)
If stay with a late '99-up you will be fine in regard to the PMW. I not sure if the statement from my ATSG manual meant model year or calendar date of production.
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Cargo Master
Joined: Feb 2005
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Now why would you trade your truck for a DRW?Unless someone has bunged it up while you are in the dessert, it was a gorgeous Lariat. The DRW won't help you with pulling the 5er.
I have a friend that is looking for a truck exactly like yours now. I hate to tell you this, but I use your truck as the example of the high end.
There are some nice F350 DRW 2x4's in Nashville. Probably enough to buy a new tranny for the F350.
The grass is not greener on the other side of the dually fence
Lord no, nothing has happened to my truck, the wife drives it regularly and even pulls the 5er on trips fairly often.
I am going to start another thread about what I'm considering doing with my truck to get others' opinions on it.
Here's the follow-up thread:
https://www.ford-trucks.com/forums/1...l#post11031209
Frmr Ford Trans Engr
Joined: Aug 1999
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From: SE Florida
All 4R100 transmissions are PWM. All E4OD transmissions are on/off lockup. The first '99 had a 4R100, the E4OD ended with the old body style trucks.