So, I am thinking about doing a supercharger system on my 03' F250 5.4l and I want the tranny to be able to handle the upgrade. I see that I can buy a new valve body for better shifts and Banks has a programmer for the transmission. Are there any better options and can I combine both of those kits?

 

BTS is beter setup

 

bts valve body, tell him what you want to do and he'll hook you up.

Brians Truck Shop

 

I Really got you thinking about a Supercharger for the truck eh? The 4R100 is already a strong Tranny. You got to remember, they used it on the 7.3L in your year and that was putting out 500 lb.ft of torque! With the blower your going to be displacing alot less. So i say leave her be. If you think the tranny will need a little help and you want to use a new valve body, since your dropping the pan why don't you Replace it with a bigger one and use some Synth ATF (Mercon/Mer5 Rated). It will help keep those temps down. As for the 4R100, i have a Great amount of trust in her.

 

the 4R100 and torque are actually a weak piece behind a 7.3,I would do at least a valve body and cooler
they also like clean fluid

 

Personally, I think your better off with a bigger/better cooler than a deeper pan.

 

I Can Tell you that there were never many 4R100's from 99-03 with a 7.3L in front of her that came throught this shop on Warranty or Customer Pay Repairs, and thats why i place my trust in her. Once again, he'll be putting out alot less Torque.



"kbeefy" Your Right, But the Extra fluid helps alot.

 

I would think a BTS valve body and you should be fine, also you may want to add a bigger tranny cooler, if your going to be doing a lot of towing.

 

Having replaced the first 4R100 at 40k miles, and just rebuilt the 2nd one at 99k miles I would agree that it is the weak link. However, recently installed tranny temp gauge suggests I need more cooling and maybe a better fluid. I run Mercon now. Is the Mercon/Mer5 different or better? Where do I find it, and how does one classify tranny fluids by their heat removal abilities?

 

Does anyone make something that you can select your own gear you want to be in for the 4R100 trans? Hate all that coasting down, want to be able to down shift or hold a gear if I want to.