I just checked jegs. TCI makes a Streetfighter 4R 70 tranny ( pretty standard , "not for use with S/C 'd engines.") but I would say that it's prolly better than stock...maybe TCI has some R & D into building a heavier duty race 4R70 or 4R100 for the 04 -07 F-150's.
I'll look into this in the next couple days.
Without a doubt, the absolute strongest built tranny you can get is from BTS. Brian will give you a two year unconditional warranty, and dare you to break it.
Best of my knowledge you would not be breaking any rules since you are not the vendor trying to drum up business for yourself or your company.
http://www.brianstruckshop.com/contact.html
Custom-Built E40D and 4R100 Transmissions.
Torque Converter Lock-Up Enhancement for 4R100.
Larger Capacity Fuel Tanks and Fuel Systems.
Diesel Engine Performance Upgrades.
Fuel Injectors
Turbos
And Much more. . . .
Later...
Bruce
i'm pretty sure the 06-07's are 4R70W. which is surprising since its such a weak tranny.
but factory tech does sell a valve body for the 4R70W, as well as a separator plate which does the same effect as the valve body, and is about 1/3rd the cost and much easier to install. Mad sells them both
I sent BTS an email. and Mad should have good input on the upgraded VB for the 4R70-75.
4R75W? new tranny?
i know the 4R100 is about 3 times the size as the 4R70W. any idea what the differences between that and the 75 would be?
Please let us all know what you find out!
Josh,
Check this site out: http://www.blueovalforums.com/forums...p?showforum=64
You have to have a valid email address to join, no Yahoo or AOL but there is some useful information on there. Actually it is the site that I am using to track my new truck.
Later...
Bruce
http://www.f150online.com/forums/arc.../t-154137.html
http://www.google.com/search?hl=en&r...R%3Aen&q=4r75w
Noted that the 75 is a great upgrade for auto tranny guys. Stronger than the 4R70W by about 50lbs of torque capacity.
Later...
Bruce
I had read that about the Marauder. The new HD's have the 4R75 since they are equipped with the 5.4 3V engine, it would've been awesome if the 4R100 was an option for one to upgrade to but not available.
There is talk that Ford will offer a 6 speed automatic in late '08 for the F series line. Should be 1st,2nd,3rd,Drive, Over Drive,and Reverse.... lol
Basically the Drive/overdrive button goes away and you get another gear to select on the column or center mount.
Later...
Bruce