An the FPV website it says the new engine uses improved Cobra R cylinder heads and a couple other thiings... i have no doubt that ford could make a 5.4 NA close to 400hp in the US.

<!--QuoteBegin-00StangGT@January 16, 2006, 4:18 AM
and not to mention actually in production compared toteh Challenger and Camaro. The concepts always have extravagant engines.

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The only differentce is that the engine in each of these are engines that are already in a lot of their lineup.

 

This is what I think:

Mustang - V6 2v 4.0 N/A - 235hp - $19,999
Mustang Gt - V8 3v 4.6 N/A - 300hp - $24,999
SE Mustang - V8 3v 4.6 SC(lowered compression) - 375hp - $29,999
SE Mustang - V8 3v 5.4 N/A - 435hp - $34,999
Shelby Cobra - V8 4v 5.4 SC - 500hp - $39,999

Just my thoughts.

 

I have said it before, and I will say it again, the 5.4L 3v will not put out that much power. Keep in mind the 2000 Cobra R had a NA 5.4L 4v that put out 385.

If Ford decided to put the 5.4L 3v in the Mustang my guess would be that it would put out around 365-375 hp.

 

I know this logic is flawed from the beginning but bear with me (I didn't bother to figure out valves and head design on the F-150 4.6 and 5.4 engines).

The 4.6L in the 2006 F-150 puts out 231-hp and 30% more (300hp) in the 2006 Mustang GT.

So if the 5.4 in the 2006 F-150 puts out 300-hp, then Ford should be able to get 30% more for the Mustang. That's comes out to 390HP for a NA 5.4L mustang.

Not scientific but probably in the ball park. Plus half way between the GT and the GT500 is 387.5HP (avg of 300 + 475hp), so this would definitely be a nice # if Ford was trying to put out an SE mustang that is half way between the GT and GT500 in both price and performance.

 

Intake
lift------------stockCFM
.100--------------77.1
.200-------------147.0
.300-------------199.6
.400-------------216.0
.500-------------223.2
.600-------------224.8

Exhaust
lift------------stockCFM
.100--------------52.7
.200--------------97.8
.300-------------120.2
.400-------------138.1
.500-------------148.2
.600-------------153.7

These are some flow figures for the stock 3v head and they have the potential for about 460 hp (Hp = 0.25714 x cfm x No. of cylinders). So I think a 400 hp 3v 5.4 isn't out of the question given the right supporting equipment.

 

ok, why not then have ford offer a SC version. That is the route most of the others are going? Roush, saleen, etc.

We got most of the NA version up to 340 to 350 (retune, cai, pulleys). Ford could do the same with a SE version. Offer a GTSC, Ford could offer a factory authorized SC.

This would keep the current 4.6L 3V in production. the addition of a SC would bump up the price 5K. Std GT would be 30 to 33K more with a SC. No real changes in the production line. It would give us about 400 to 425 HP. That fills in the gap. And using off the shelf stuff would save R & D for Ford.

Face it, most of the GT500's are out of sight for most of us....just go by the production numbers.

This in the end would bring or offer a basic price point compariable to the Dodges and Chevys.

 

They could increase the compression on it, how much was it for the Cobra R, and wasn't the Cobra R under rated?

 

I don't know if slapping a supercharger on a 4.6L solves anything..why not buy an aftermarket one...which will probably out perform the Ford version anyways?

All this is happening too soon....as I'm looking at buying a house within that time frame, but I'm also looking at one of these cars at the same time. Might have to go the bargain route 03 Cobra.

I'm just happy that American Muscle is back. Sport Compacts are too expensive to build and they don't involve any hands-on work.

 

It is true that the Cobra R was underrated.. Motor Trend Dynod one and it did 376rwhp...9 hp drivetrain loss, yeah right lol

 

9 HP!!!!!! must be using some sort of super duper teflon coated snake oil

less, doesn't the typical mustang drivetrain absorb about 15% of the engines output??? That'd be about 52 HP following that convention, however the drivetrain only really absorbs a total of about 35 or 40 horsepower so that'd put the R model 5.4 at about 420 hp

 

Yeah Fords 5.4L is easly capable of 400hp N/A.

 

Hopefully we will find out what it is capable of soon.

 

Or not so soon, since neither one of the cars we're talking about will be out for several years. I think its going to be quite a wait before we see the goods. They would be silly to waste the ammo until they are under fire.