purchased complete 2007 4.6 3v intake TB/CMC etc.

i purchased a complete 2007 mustang GT intake,throttle body, with CMC motor etc.


the first thing i noticed is the CMC plates and adjoining runner section. the plates themselves are half as thick as mine, so they will flow better than the truck intakes. they are flat and riveted to the control rod. the rod is also flat instead of a square rod. the runner is also of a larger cross section to reduce restriction in the CMC area. in essence ford compensated for the plates, whrereas in my intake ford didn't. not only are ours restricted more than 4.6 3v, but the plates themselves on ours are killing us. i will post some pics later today. you ask"why is he telling us this"? well...

the removal and tuning for the removal of the plates on my motor is essential for HP. i guess the pick-up engineers didn't care or were satisfied with less.


the articles debating CMC plates removal for mustangs aren't valid for the 5.4 3v. there may not be much gain for them, but with such a large section of our intake runner filled, no wonder 280 is the limit. has anybody wondered why i made 340 rwtq without half of the mods the rest have? i am an automatic. oh i gain a few percent from drivetrain(rear end,tranny), but otherwise i lose as much as any 2wd truck. i don't have a tune, so my load calculations are off. (spark advance). i had a stock exhaust with 'x' pipe. a restrictive header with number 1 and 2 cylinders using the same 1 5/8" primary. a 75mm throttle body and elbow that is not as good as the stock 5.4 3v setup. but i still made 340 rwtq!!!! 250 rwhp as a baseline.


i attribute it to the CMC removal. i will post pic like i said, but those who want to exceed the dreaded 280 rw should seriously consider a few hours of work for an easy gain. i am mad at ford for giving us so little to work with in this intake, when they gave the stang croud so much.


i am going to investigate a way to use the 4.6 3v intake. i don't see how. it is 1" narrow at the ports.

this is out of focus a little. but you get the idea. the 4.6 runner compensates for the CMC plates. not to mention their plates are better.

this shows the angle that can be used for longer plates to fit this on my 5.4.






it won't work with any other port style. 2v or 4v. only 3v.

measuring the outside of the two intakes runner length the 5.4 is 18" long and the 4.6 is 15". not much loss there in torque band. the only drawback is plenum volume. the 4.6 unit will be small for the 5.4. adapter plates will add 1" to the 4.6. for 16". i figure the advantage in twin 57mm 833 cfm TB to make up for any losses. these unit make power to exceed 7200 on a cammed 4.6 3v.