What's best for towing?

What's the best for light off roading?

Which can handle the most HP and TQ?

What's the best all around?

Which one is best used as a boat anchor (or oversized paperweight)?

 

best all around 70-75 (there is also the new 4R70E btw)

heavy towing i would go with the 4R100

the E4OD is the predicessor to the 4R100 i believe

 

The E4OD and 4R100 are basicly the same unit used in heavy duty applications. The 70s are also basicly the same unit in light duty applications.

Best all around? 5R110.

Adrianspeeder

 

Where is the option for the ZF6?

In my opinion, the 4r100 is the best fit for all of your questions except for the paper weight one... that is probably the domain of the 4r70w.

The E4od, and 4r100 are essentially the same unit, with updated electronics in the newer 4r100 model. The 4r70w and the later 4r70e are also the same units. The 4r75e is a lighter duty transmission (same with the 70w/e) compared to the E4od/4r100.

 

Now wait a minnit! I thought the E4OD was simply a C6 with overdrive. Except it had electronic shifting controls. Now you say the E4OD is the same as the 4r100 except... well, you didn't say except what? Does that mean my C6 is as strong / trouble free as the 4r100? The same as the 4r100 except for OD and electronic control?

Does this mean my 4r70w is just a lightweight C6?

I'm confused! I wish I had no automatics! Only manuals!

Flagship

 

e40d and 4r100 are the same except the 4r100 had some electronics added...

 

whats the transmission code 'U' on my 2001 screw for?

 

That's basically correct.

The 4R100 has many stronger parts and improved electronics. Other than that it's the same trans.

The C6 also does not have a lockup torque converter. The C6 is a strong trans, and since it's so simple it is very reliable, too.

No. The only thing the C6 and the 4R70W have in common is that both are automatic transmissions. The 4R70W has nothing else in common with the C6.

 

U = 4R70W.

 

Honestly, I think the C6 is the strongest automatic transmission Ford made until the release of the 5R110 Torq-shift. If I were going to build up a drag racing car with a Ford motor in it, I would back it with a built C6.

The 4r70's are more or less based on the AOD trasmissions, which are loosely based on the C4 but with overdrive.