How do i tell which trans i have? I looked at the chat in the sticky and found these 2 that applied to my '01 f150 5.4l......

Model: 4R70w
Type: Four speed, Rear wheel drive, and 70(x10)lbs of torque
Years: '94-'07 F-150
Engines: {302, 4.2L}, {4.6L, 5.4L}
Display: PRN(D)21 w/ overdrive lockout switch
Fluid: Mercon V
Ratios:
1st 2.84:1
2nd 1.55:1
3rd 1.00:1
4th 0.70:1
Reverse 2.32:1
Trans code: U

Model: 4R100
Type: Four speed, Rear wheel drive, and 100(x10)lbs of torque
Years:
'99-'01 F-150's (rare)
'99-'04 Lightning's, F-150 7700'
'99-'03 superdutys
'03-'04 gas superdutys
Engines: {5.4L, 6.8L}, {7.3L PSD}
Display: PRN(D)21 w/ overdrive lockout switch
Pan: 20bolts
Fluid: Mercon
Ratios:
1st 2.71:1
2nd 1.54:1
3rd 1.00:1
4th 0.71:1
Trans code: E (gas), 9 (diesel)

Im most likely going to need to use Mercon V right?

 

Look at the data sticker in the driver door, you most likely have trans code U.

 

So, the trans code is by the vin# or in it?

 

Also, i just spoke with a ford parts guy and he said that both the 4r70w and the 4r100 take Mercon V.....