I have an 04 f150 reg. cab and just lifted it with a 6" procomp lift and put on 33/13.50/20 extreme a/t's. Trying to decide what would be best to increase the performance of the truck after these mods. What would you guys recommend a full system exhaust or regearing to 4.56 from the stock 3.73. I'm assuming that the 4.56's would take some work off of the engine with the increased torque and thus save alittle gas, again it's only an assumption. Would do you have to say or recommend I should do. Thanks guys.

 

i say edge evo if you dont have it already
and/or 4.56's

i am on 8 inch rize, 38's and have both, and my performance is great, can spin my tires when i want. gas mileage...not so good. but thats me

 

if you plan on keeping the 33's and gearing with the 4.56 you will have some major power to those wheels but your MPG will suffer bad on the highway, if you up them to 35's w/ 4.56 you should be good! but a 4.10 would better suit you on highway. as for the exhaust system you wont see much but it does help in the long run! what performance mod do you currently have, do you have a programmer, if not i recommend the edge!

 

i agree...