Im looking to do a twin turbo set up on a 03 f150 with a 5.4. Please dont tell me just to find a kit for a 4.6 and bolt it on. Im the wrong guy for that. I have a tig and wire welder, all the metel tools need to do this, and also the years behind me. what i need help on is the size of the turbos. Stock 2003 f150 5.4 auto 4x4, Im looking to keep the motor in one peace, so i dont need extrem amounts of boost, but i want power. please dont just tell me that i need a t3/t4 turbo times two. i need the sizes of everything. so that i can find the right one's. the turbos are going under the cab of the truck, lots of empty room for a twin set-up. yes i do know i need an external oil pump to return the oil from the turbos to the oil pan. and i will need to have my computer flashed to a new program, i live in wisconsin so if anyone knows anyone in the state that has the background behind this to help with the computer let me know too! CAN ANYONE HELP ME OUT HERE?? dose anyone have all the right numbers to put into the turbo caculaters to find out the right size i need??? please email me at ( ridersofthestorm680@yahoo.com ) Thank you
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sounds like a good project. You might want to post further down in the engine mod. forums for more technical info.

 

You might check with Troyer performance.
http://www.troyerperformance.com/cgi-bin/ppistore.pl

 

I saw a site from texas awhile back about this.They do all this like a club and invite anyone to join and play together.They dont charge anything and expect the same in return.I wish I new were that was now.
If you get this off the ground start a thread for your progress.I want to see this

 

i am not sure of the size but if you went with a single turbo it would be a lot simpler. tuneing would be better. and only half the problems. i might see it if you were going forged, and more boost. if it were me i would go single. also i know hellion single kits are making more then twin turbo.

 

Do you plan on building the internals of the engine? If not, just one turbo will be enough to grenade the 5.4L

Good luck...sounds like an interesting project.