Somebody mentioned to me that the 4R100 tranny came in our 5.4 Screws with the III hitch. Is that right? I thought the 4R100 only came in the F250s and Lightnings. Can someone clarify?

 

The 4R100 only comes in the SCAB F-150 with the 7700lb payload package or the Superduty F-250. In essence that (7700lb)was the F-250 before they came out with the Superduty. We all have the 4R70W in our Screws. It's been a very strong unit in my truck and has all the guts I could ever need.

 

Not all screws have the 4r70. The HD's have the 100, I've heard some CA trucks have the 100. Best way to know is check the door tag, should say 44e I believe for the 4r100. Someone please correct me if I'm wrong.

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- 2001 F150 Harley Davidson Special
- 1993 Mazda Miata, wifes car
- 1994 Harley Davidson Heritage
- 1976 Honda CB750K, Original
- 1965 Honda 305 Dream, Original
- 1971 Triumph Trophy 650, Original
- 1971 Norton Commando
- 1970 Honda Trail 90, Original
- Yamaha 500 Short Tracker, racing #69
- 1984 Yamaha Virago 1000, wifes bike
- 1981 Honda Passport 70, wifes bike

 

All 5.4s in California now come with the 4R100.

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2000 F150 XLT SuperCab, Short Bed, 4X4, ORP, 5.4L, Auto Trans, 3.55LS, Captains Chairs with power drivers seat, rear slider, class III towing package, remote entry with alarm and just about everything you can get on this truck. Added a Ford bug deflecter, floor mats, a Dynamax Race magnum muffler and 3" mandrel bent pipes, Superchip, K&N FIPK Gen II, Bilstein shocks, Redline Synthetic oil, Kenwood stereo system, an MTX Thunder 204 4 channel amp, ProComp AT 33/12.50/17 tires and 17X8 American Racing Python wheels.

 

I stand corrected. Anyone know why the HD's and Cal. trucks have the 4R100 tranny?

 

So, how can we tell if the 4R100 is in our trucks? Is there some way to identify it? A number somewhere?

 

Look at your door tag, under tranny I think it reads 44E for a 4r100, don't recall the 4r70 code.

------------------
- 2001 F150 Harley Davidson Special
- 1993 Mazda Miata, wifes car
- 1994 Harley Davidson Heritage
- 1976 Honda CB750K, Original
- 1965 Honda 305 Dream, Original
- 1971 Triumph Trophy 650, Original
- 1971 Norton Commando
- 1970 Honda Trail 90, Original
- Yamaha 500 Short Tracker, racing #69
- 1984 Yamaha Virago 1000, wifes bike
- 1981 Honda Passport 70, wifes bike

 

Just a followup, I recall that another quick check is the number of bolts holding the tranny pan on, like 14 for the 4r70 and 20 or so for the 4r100. Just and FYI.

------------------
- 2001 F150 Harley Davidson Special
- 1993 Mazda Miata, wifes car
- 1994 Harley Davidson Heritage
- 1976 Honda CB750K, Original
- 1965 Honda 305 Dream, Original
- 1971 Triumph Trophy 650, Original
- 1971 Norton Commando
- 1970 Honda Trail 90, Original
- Yamaha 500 Short Tracker, racing #69
- 1984 Yamaha Virago 1000, wifes bike
- 1981 Honda Passport 70, wifes bike

 

I live in CA and I just took delivery a few weeks ago of a supercrew w/5.4 and it does not have the 4r100 tranny.

Sean

 

Interesting! Contrary to what I've read in a few places, my dealership tells me that there is NOT an 'HD' 7700 lb trailering option on the SuperCrew. Putting aside what you've heard from others, has anyone actually got a SuperCrew with a HD suspension package and a 3.73 gear?

Ford Guy

 

Well, guys info you, my truck is from CA and its the 6600lb version and I have the 4R70W. So why did some of the trucks get the better tranny 4R100 and the rest of us did not?

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2001 F-150 SC 4X2 Lariat, Oxford White,
5.4L, Class III Tow Package, 3.55 LS, Flowmaster Exhaust, Line-X Bed Liner
2000 XLT Sport Expedition 4X4, Laiser Red/Grey
4.6L, Class III Tow Package, Flowmaster Exhaust
"ON ORDER"
(2002 Limited Explorer 4X4
4.6L, Class III Tow, Moonroof)

 

i just looked at my door jamb sticker and couldn't figure out what tranny my genII 4x4 5.4l with trailor tow package had. the only code i could find that seemed to relate to tranny type was a "U" underneith TR on the sticker! well, looked in the owner's manual to try and figure this thing out. owner's manual says that the 4r70w uses mercon v atf while the 4r100 uses just plain old mercon. my tranny dipstick says mercon v on it. therefore, i must have the 4r70w since the owners manual says these two atfs are not interchangeable.

 

U is the 4R70W
E is the 4R100

California trucks get the 4R100 due to shift points & emissions. I don't think a 7700 Screw is available.

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2000 F150 XLT 4x4 Short Bed. Amazon Green, 5.4L, SuperCab, ORP, Tow Package, Sliding Rear Window, Electronic Shift, Remote Keyless Entry, LT265-70-17 Tires, Clarion Pro Audio, Herculiner Bedliner, Air Silencer Removed, Keyless Entry Mod
1994 SVT Mustang Cobra. #1032 of 5009.

<A HREF="http://home.fuse.net/94cobra/my150.html" TARGET=_blank> </A>

 

The 4R70 tranny handles less torque (700 ft/lbs) than the 4R100 (1000 ft/lbs) . The reason CA Screws have them was for emission purposes . The 4R70 less power loss than the 4R100 . It turns "easier". This gives better fuel mileage and less overall emissions .


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2001 S-Crew 4x4 White 5.4L XLT Off Road & Tow Package 17 in. Aluminum wheels Snugtop Shell

 

I didn't say anything about efficiency, only shift points. Totally different. And the 4R100 can't suck up that much more power. I would think the fact it's heavier would affect mileage more than the internals anyways..



[This message has been edited by 2000 F150 4x4 (edited 06-19-2001).]