shammodogg

I have a 07 f-150 4.2L V6 and Im trying to find a Dual Flowmaster Exhaust, K&N Air Filter System for it. I am going to put a 3" leveling kit on it with 33's but I want the intake and the exhaust to help me out with the power Im going to loose putting bigger tires on it. Can anyone help me out here?

ATOM

flowmaster does not make a kit for your truck. K&N also does not make an intake kit for your truck, just a replacement stock filter. just regear it.

flareside93

you can do the ghetto mod to the air filter that has been posted somewhere here before, as for the exhaust, just go to a muffler shop and have them do whatever type of exhaust you want seeing as you cant get the kit. you might even save $$$.

shammodogg

what ratio should I regear it to?

ATOM

4.10's at least

shammodogg

Thanks Atom! I called 4WheelParts and they said that no one has any exhaust or intake systems for the 07 4.2L V6. They have them for the earlier models but not for the 07's. Im currently in Iraq right now and dont now what size rear diff I have on my truck so I can purchase the gears. Ive spent hours trying to find what diffs came with the 07 4.2L V6 but I have had no luck. Does anyone know what size diff they came with?

Keeblerz28

Either the 8.8 or the 9.75". The 8.8 diff looks fairly round, the 9.75 is kinda oblong shaped. There should be a metal tag on one of the diff bolts, indicating ring gear size, gear ratio, and LS/open. LOL. It will take you less than a minute to find out when youre back home.