As many of you know, Ford's "new" 4.6l 3-valve V8 just debuted in the 2005 Mustang. As more of you probably know, the engine produces 300 hp and 320 lb-ft of torque. My question is this, if and when do you think this engine will migrate to the truck end of the spectrum? 300 hp in an Explorer or a Town Car might be kinda fun. Also, if and when the engine is put into a truck, do you think Ford will "de-tune" it (for more torque instead of horse power)?

This new version of the 4.6 is all over Toyota's variable-valve-timing equipped 4.7l V8. The revised I-Force produces 282 hp, and I believe 325 lb-ft of torque.
Ford seems to be keeping up fairly well.

 

It'll eventually turn up in other cars once Ford uses up all the old 2Vs. It'll be like the same story as with the switch to PI heads, where the Mustang got them first, then slowly everyone else did.

Of course they'll tune it for more torque, there not like Dodge with the HEMI, one size does not fit all.

 

I have heard that the new 4.6L Stangs are running 13.8 through the 1/4 mile. That's not impressive at all. If the Z28 was still manufactured, it would still be smoking the Stang. So what did the 3-valve heads really do for the engine?? Just add complexity and therefore more odds of breakage...that's about it.

As far as Toyota's V8, I don't know of any Toyota cars getting the engine so it's really like comparing apples to oranges.

 

It should only be a matter of time before the 3V 4.6 makes its way into the F-150. It will definitely be tuned for more low end torque. Right now its peaks are at 5750 for hp and 4500 for torque which are even higher than the Hemi which receives so much flak for being weak down low (something I don't agree with). Ford went for bottom end grunt with the 5.4 so I would imagine the 4.6 would be similarly tuned. It would probably end up slightly below the Toyota 4.7 for power and torque. I imagine VVT-i and 4 valve heads might also give the iForce a slightly wider powerband than the Triton 3V.

 

0-60 in 5.1 and 1/4 in 13.6 @ 99.9 MPH with an auto according to Motor Trend. Shave a couple tenths off with a manual and a good driver. That's not bad for a curb weight of 3500 lobs. Previous 2v Mustang GT's were clalmost a full second behind that. Pretty good for keeping the same displacement. I'd look for a truck version to be around 260 to 280, 320 ft-lbs. It's revving way to high to make that 300 HP mark, Hopefully it'll be out for 06.

 

I think that the 4.6l is a strong engine with the manaul tranny (which i have) and the auto tranny is suppose to be faster than the manaul

 

Somebody please correct me if I'm wrong, but doesn't Ford put an All-Aluminum block, 4V 4.6L V8 in their Lincoln Aviator? I'm pretty sure they do. Isn't this the "same" engine, just hopped up for the upscale SUV?

 

Finaly someone on the positive side of the FORD ideas!!!!!
LIVE LONG AND PROSPER....................TURBO TED

 

No, it's not all aluminum, it's basically the mach1 engine with a different intake. The Aviator uses 4V as did the mach1. The 05 mustang uses 3V (2 intake, 1 exhaust) and variable valve timing. The all aluminum 4V 4.6L were found in the 99 and 2001 cobras.

 

Geez WX... Cut Ford some slack. The new Mustang is a little heavier and yet it is still faster. I would say that's progress. Not to mention they still moved to the 3 valve head w/o the Camaro around to push them to do it.

Glad to see Ford being proactive instead of reactive for one, myself.

 

The Z28 to a GT was never a truly fair comaparison. The Z28 shipped with a 350 (5.7) where the Mustang shippied with a 5.0 or a 4.6... THe sad thing was that the mustang was still the best fun for the money. Car and driver said that year after year.

 

Thanks for the clarification 73Fastbackv10. I went on their website and pasted the below FYI. I guess the 3V version of the 4.6L is like Ford's version of the 4V 5.4 L -- 4V per cyl + increased compression for improved performance. Of course the higher compression calls for premium fuel, which I guess is a no-no in a work truck, so they backed off the compression and went to a 3V design for the F150/F250 5.4L. Guess they'll eventually do the same for the F150 with the 4.6L?

From the website (http://www.lincolnvehicles.com/vehic...lt.asp?flash=0):

4.6L 32-VALVE INTECH™ V-8 ENGINE

POTENT Aviator's V-8 boasts an impressive 302 hp and 300 lb.-ft. of torque. And if those numbers don't get your heart pumping, a simple application of pressure on the accelerator surely will. Aviator excels at towing and off-the-line acceleration. Aluminum 4-valve heads and an aluminum intake manifold with variable-length runners optimize airflow at all engine speeds for improved performance.

 

The 4.6l in the 2003 Expedition is all aluminum. My wife has one. but she's saleing it. She has ordered a new -05 GT. I like the Chevy people who thy to compare a 4.6L
( 281 ci ) to a 57L ( 350 c.i. ). I see that chevy 305 stock can't compete with a 281 c.i. stock. 5.0 mustangs killed the 5.0 camaro's and birds.

 

The Camaro and Mustang were competitors from the beginning. Back in the late 60's Ford and Chevy had V8 engine offerings that ranged in size to be competitive. Its sad when people have to use the size of the engines to make up for lack in performance. The 4.6 was Fords answer to Chevy's Camaro. Chevy concentrated on all out performance and gave the Camaro a serious handling package, along with a serious driveline-5.7 V8 and 6 speed tranny. Ford went for the more vanilla approach and made a softer all around car that rode nice, and accelerated fairly well. That was what made them sell so well, all around driveability. When the LS1 F-Body's died, they were running the quarter mile in high 12's stock. The new mustang still doesn't compare. Yes its gained weight, but its also gained 40hp and better gears stock. Most 5speeds are only seeing low 14 second runs-same as the 99-04 stangs. The auto does run quick times due to close ratio 1-2-3 gears but then dies once in 4th because its a gear for economy, which explains such low trap speeds. Relating this to the truck, even if this engine finds its way to the new truck, it'll still feel the same as the old 4.6 if not slower as the new truck has gained a lot of weight also.

 

I'd like too see the F-150 gain a 3-valve 4.6L, along with the 6-speed auto that is now in the Navigator. Or atleast a freakin 5-speed, I don't know what Ford was thinken when they decided too stick with the ol 4.