nonetheless, the 4R70W can still be built up. the mustang guys are using it, and many of them are putting out much more power than we our with our trucks. in any case, brahmus is a member who has a built 4R70W that has been able to withstand 38'' tires and a supercharged 5.4.

 

I have 35s and a stock driveline, what can I do so I dont worry about it? Put in one of those valve body's?

 

Yes you need an upgraded valve body in order to keep the line pressures where they should be. You also need to have a trans temp gauge and the largest cooler you can get. The 6.0L cooler is the best fit.