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During the recent Ford Racing Invitational, one of the Mustangs being raced by the journalists on hand featured a newly developed intake manifold on its 4.6-liter V8. The current production manifold works very well with all kinds of engine modifications, but once the revs hit 6,500 rpm, it completely falls flat. The new manifold is designed to support a bump of that redline up to 7,500 rpm. The manifold doesn't really add much power on its own, but it does allow other mods like camshafts, valves and exhaust systems to take advantage of more engine speed.

Ford will be building tooling over the next few months and running production prototypes toward the end of summer. The manifold should be on sale later in the fall. Ford hasn't yet set pricing for the new manifold but it may come in at about $600-700. Mike Sutton from Car and Driver who drove a 2009 GT fitted with the new manifold said the engine easily revved beyond 7,000 rpm, something impossible with a stock modular V8.

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    • 1 Second Ago
      • 6 Years Ago
      Does Jack Roush have any involvement in this? I am going to assume by looking at the picture that the new intake is taller than the stock one and that my Strut tower brace is not going to work in conjunction with this intake. There isn't any mention in the article about what the intake is made of but 600-700 dollars for a plastic intake seems a little steep but from the picture it does look like its made of aluminum. Either way I cannot wait to see the final product. It states in the article also that its for RPMs above 6500 which would definitely make this a modified engine intake due to the 4.6's habit of self denigration above 450 crank HP.
      • 6 Years Ago
      Anybody read the latest Car and Driver. The old "carry over" V8 Mustang GT is NOT outperformed by the SS 6.2L V8 from GM nor is it by the hemi in the Challenger. The Mustang GT is the better total package. It also had better road manners and skid pad than either of the IRS cars.

      The floating dual piston brakes of the Mustang GT also performed well against the Camaro SS brembo units.

      This intake manifold is made for the Ford Racing customers, it is not a production part and it is designed to not reduce low RPM power but instead maximize upper rpm flow and in high flow forced induction or stroker applications.

      • 6 Years Ago
      Wow, a big 4.6L V8 that revs like a Honda VTEC engine, sweet. They should make this standard on the new Mustang.
        • 6 Years Ago
        Jay Evans is right on the money. This intake manifold is pointless unless you have head mods. If you have a set of ported heads and more aggressive cams, this manifold would allow for a significant power bump in the upper RPM range. However, it will do very little for a stock engine. Besides, with the new 5.0L coming to the market next year, making changes to the production 4.6L is pointless anyways.
      • 6 Years Ago
      I don't see why getting a 4.6L V8 to rev to 7500 is impressive. When for quite a while now we've had 7.0L V7's revving easily to 7000 (LS7).

      Kudos to ford for more goodies to play with though.
      • 6 Years Ago
      I can understand a certain halo effect for Ford, but re-tuning an intake for racing rates an article?

        • 6 Years Ago
        I hear they also make an after market muffler, and high output alternator. I smell two more riviting articles!!
      • 6 Years Ago
      A high-revving Mustang GT with the track pack sounds like a blast!
      • 6 Years Ago
      If I can fit this in my 2004 mustang GT that would be awesome. It will be a great addition to all the performance parts I am planning to get over the summer. I need to read more about it, to see what are the gains and and benefits over stock one.
      • 6 Years Ago
      Meh...they will still be underpowered boat anchors.
        • 6 Years Ago
        Every Ford post, you invade.
        • 6 Years Ago
        Really??? They are not boat anchors???

        Let's see here:

        Ford 4.6 - 315 HP
        Ford 5.4 - 310 HP

        Hyundai 4.6 V8 - 375 HP
        GM 3.6 V6 - 304 HP

        Plus, we must not forget that Ford's idea of luxury is to make everything outrageously heavy...so, that is why the new F-150 with a CLAIMED 11,000 pound tow rating struggles immensely to tow 6500 pounds up a hill.

        But yeah...Ford know what they are doing by launching all of this so-called new product with crap, carryover engines.

        That is the best way to turn people off to your product...and it is showing by the dismal sales numbers.
        • 6 Years Ago
        Well, having the unfortunate experience of owning a "performance improved" modular 4.6, I feel I am more than qualified to make that assessment.

        What you blind cheerleaders call "trolling" most people would call the truth...or are you denying that the Modulars have the boat anchor nickname?
      • 6 Years Ago
      Without the expense of putting on a turbo I always said when I build engines for my hot rods in the past, it is not all that "crap" that you put on an engine. It is getting that engine to 'breathe". I would always have the ports and valves oversize and the head shaved and the biggest heads I could place on a certain engine. Yes I am old school. When you "open" up an engine to breathe you increase both fuel mileage and horsepower. I am happy and looking forward to adding this new manifold to my metal flake fire red Mustang GT 4.6 liter 315hp 5 speed convertible. Going down the interstate at 80 + mph @ 26 mpg to what I believe will be 80+ mph to 30 mpg and increase horsepower to boot.
      Like Carl Edwards says about Ford, " the best cars in the world" and guest what they keep getting better.

      Bye Bye GMC and Chrysler!
      • 6 Years Ago
      It's amazing what a little competition from the Camaro and Challenger has done to push Ford to put together all of these little goodies we're seeing. That should help to keep the Mustang on top and selling the numbers Ford wants. I wonder if the Gremlin x might make a come back.

      Keep it coming Ford.
        • 6 Years Ago
        if your gonna go to all the expense and weight of ohc you mine as well rev it
      • 6 Years Ago
      arturo, I believe this manifold is specific to modular 3 valve heads. Therefore, it could not be used with the 2V heads on your 2004 GT.

      Lemon, Ford did use a dual runner intake on the 1996-98 4.6L 4V in the Mustang Cobra but dropped that design for what they referred to as a "tumble port" single runner manifold in 1999.
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