colton

I recently sold my 99 and bought an '07 F150, 4.2l. I'm looking to put a larger TB on it, but there are no aftermarkets for it, and i haven't heard of anyone successfully switching out the OEM TB with a larger one from another vehicle. Not wanting to switch the fly-by-wire to cable, and just curious about possible options for now.

Any larger TB's compatible with the plug, if that's possible(doubt it will be that easy)? Or other general advice?



Also: the truck is sufficiently modified for this, A larger TB would be beneficial. Just figured i would throw that out there beforehand. Thanks for any advice.

Southern_FX4

I have the 5.4 and I upgraded my tv to the bbk 80mm I think they make one for the 4.6

colton

not sure if you misread or what, but i have a 4.2 not the 4.6. But yeah, I just saw that one and was told that it would likely interchange in place of the 4.2l's TB anyways. idk if i want to spend $300 on a TB that would "likely" work though, i'd like to be sure about it. haha

Southern_FX4

Yep sorry misread

bennie87

I'm new to this. What is the benefits of a bigger TB? I put a larger TB on a car once and it lost significant power. Do you have to have any mods to have a bigger TB?

colton

A larger throttle body isn't necessary unless you have a considerable amount of extra power. The factory TB can handle pretty much any bolt on modifications you add.

Blown Ford

What size is your stock throttle body?

bennie87

I have no idea what size the stock size is

colton

the 4.2l stock size is either 60 or 65. if i remember right it was 65mm but i would have to double check.

Blown Ford

Ok. So that gives you a cfm rating of between 600-630 roughly. Considering it takes 1.5 cfm's to produce 1hp your stock throttle body is capable of supporting at least 400hp.