Hello guys I have a 2002 ford F-150 5.4L crew cab fx4 which comes with 4r70. I've owned a same truck like 2 years ago and I changed that tranny like 3 times it was a pain in the but I had slipping issues so the first time I took the tranny out i disassembled it to took in side because I was curious and the clutches are small, I was thinking about on buying an overhaul kit but I didn't I just wanted to get it fixed and get rid of it and not to long ago I brought me another one only this one came with a new motor it has about 1,000 miles but the guy wrecked it and he didn't want it so I got it from him, now I brought a 02 ford expedition so I could use the radiator support, and some other parts but what I like most about it is that was the last expedition that came with the 4r100 and its 4×4 too so I got the tranny wiring and I'm pretty sure I can use the flex plate, torsion bars and the driveshaft that gose to the front differential what else would I need and if it's possible to make the conversion successful

 

You'll also going to need the computer, the computer in your truck will not operate a 4R100.

 

Yes sir I noticed that. What's going to be a problem now is the exhaust system