Okay.. so heres the deal.. I own a 2003 supercrew 5.4 f-1fiddy. And I'd really like to make it.... well.. FAST!!!! It's lifted 6 inches on 36's.. what could I possible do to it? Here's what i'd like to happen... Better (more like stock) Bottom end, More top end (if possible) Nice sounding exhaust, Better performance (meaning... being able to pretty much beat every truck in my way..) So please help me out here with anything.. Sites to go to, Things to add, things to do, things not to do.. Please anything will help.. Thank you all.

 

If I could offer one bit of foresight: be prepared to spend LOTS of money.

This is risky for me getting flamed, but it's true.

It costs more to make a lifed truck with big tires go as fast as a stock truck with stock tires...

Also, the higher your truck is lifted from stock, affects it's stability and center of gravity.

 

harley/lightning supercharger easily found on ebay

 

Well, here is a start. When you lifted the truck, did you swap in a lower front and rear gearset? Most F-150's have either 3.55's or 3.73's. With stock tires and wheels, this gearing is adequate. But with a larger diameter tire and wheel combination, this actually takes gearing away. The gears actually turn slower with larger tires. The larger rotating mass also could affect your braking distance. Basically it's slow as s***. This is where I would start. Most people would have either a set of 4.56 gears swapped in to bring you back into normal rpm range. The next thing would be a GOOD catback exhaust, intake, and a good programmer such as SCT, Diablo or such. You could probably install a GOOD set of headers too but it depends on how deep your pocket is. If you go with a BOLT ON catback exhaust, you can save money by doing it yourself. Same thing with a programmer and intake. Simple hand tools. As for the gears, you need a professional to do that. Hope it helps. Be prepared to spend the cash and hit up the internet sales.