429 Boss Mustang

but they were late 2 years fords gonna be late 1 so its fair

TTS197

I'm sure you can run boost, but at what PSI? 5-6 before detonation.
What would be the point of going that route, when I'm sure that a Head and cam swap can probably yield the same results...

Does anybody know if this engine is siamese bored?

turbo05gt

ask the zo6 guys what 5-6 psi does for them, low boost on high CR motors will give you close to the same power (much more down low) than a low CR motor on 2x the boost.

No way a head/cams swap will give you that power.

sgt d

tts197 beat me to it, i would not go through the trouble of putting a kit on the car for 6 lbs of boost, at max.

but he does bring up a good point, maybe the platform will be woke up like the older gm platforms with the head and cam swap. i personally would love to see an n/a motor putting down some power. but i am sure if this motor is the base v8 and not some se version, then the internals will be limited to that of hypercraptic like materials.

turbo05gt

Come on James you're smarter than that, to look at just the boost numbers is well silly.

C6 Zo6 11.0 CR puts out around 440-465 rwhp

now lets go through the trouble of adding a little boost.

587 RWHP, 4.5 psi, ProCharger P-1SC-1, stock LS7

And a tiny bit more

622 RWHP, 6 psi, ProCharger P-1SC-1, stock LS7

Dunno about you but 150-200 hp is WELL worth it to me.

turbo05gt

Ive yet to see a mod motor cam/head swap thats worth the $$$

sgt d

i agree with the mod motor comment but i still take you back to hypercraptic internals.

if this is going to be the base v8, non romeo, then when you pop that pos i would build at a low compression for the fi. again though we will see, i remember when everyone thought we would see the 4 valve from the mach powering the 05.

jsaylor

Yes, it is siamese bore.

3Mach1

You make a very valid point. This sounds like a typical Ford marketing scenario. I will not be blackmailed into this by Ford. Instead, I may find my way to a GM stealership and get a ss camaro. That is if I can find a way to live with the interior and the weight. Ford needs to drop this engine in the GT ASAP and get on with it.

TTS197

I agree that the z06 engine makes good power under 5-6 psi but the reason that it does, it's because of the it's displacement.

If that car had 281 C.I with a high CR running at 5-6 psi tops, I'm sure the number would not be all that impressive.

Now if you had another vehicle displacing the same as the Zo6 with a lower compression say 8.1 and running 25 PSI.
It would completely dominate.
Actually high Compression engines on boost lose low end torque.

Comparing apples to apples,
which one do you think is better for boost and will make more power before and after FI?

5.0 4V doch 400HP 375TQ CR 11.1
or
5.0 4V doch 400HP 375TQ CR 8.1<---------this one

stangfoeva

I can understand you don't want to wait, because I'm in the same boat. But you might be kicking yourself in the rear if the 5.0 comes in 2011

turbo05gt

Only to a point the CR helps, alot.

Im not a big bench racer but the gains will be substantial. Have you ever had a mod motor with low CR on street boost? Its a joke you need almost 2x the boost to make the same power than with even stock CR.

Running high boost on low CR you can make power but you MUST run big boost.

I dont think thats correct or even see how thats possible.

Wrong here given the same ammount of boost the 11.1 will make more power over the entire RPM range.

Take a peek at this.

http://www.musclemustangfastfords.co...o_results.html

TTS197

NO, the C.I helped alot.



That was a vague conparison.
But I have seen a 5.4 3v 8.5.1 @ 15 PSI make 700RWHP.
Not much of a bench racer my self, Do you know if morosso is open this wednesday?




Like I said in my original post, What's the point if you can run the boost!



I see your point.
But that's at the same boost level.
But happens when you up the boost?

TTS197

Who said anything about power?

turbo05gt

Ill get to this tomorrow!



I bet that 3V was a pig down low.

No Moroso is down for awhile, I think.



For a race car low CR is the way to go, but for a street car, hell even street/strip IMO its not the BEST way to go.



Its WAY past my bed time Ill get back to this tomorrow!!

turbo05gt

Other than power why do the swap?

TTS197

Nite.

TTS197

What I meant was power level.

I agree I haven't seen any H/C combo mod motors worth the $ either,
375rwhp is the most that I have seen so far on the 3v.

We still don't know much about the engine beside it being 5.0 DOCH 4V DI and that it's spins at 7000rpm.(Siamese Bore)
I see a lot of potential here in N/A form.

I think it's safe to say that with a H/C and full exhaust treatments it should be well above the 400rw mark easily.

I think it will run close or evenly to one that is boosted at only 5-6 psi
just because it will be lighter than one that has to haul that extra weight to produce power.
This is what I meant.

MetalMustang

something interesting to note was a dealer I talked to today mentioned that the 2010 would have a 5.0 like it was a sure thing. I was talking to him about ordering an 09 and what kind of mod work they did, and he was talking about how in the past they've sold a bunch of Boss customs and I asked if they were just appearance mods, or if they had a 5.0 in them and he said "well they were just an appearance plus new exhaust/intake type of thing, the 5.0 isn't going to show up from the factory until the 2010 comes out. I didn't think it sounded like you want to wait that long though."

Who knows how accurate his info on it is, but he sounded like a nice guy and at least genuinely seemed to believe it himself at the very least.

Boomer

4.6 goes bye bye...
This engine gets the call up

For those thinkin the 2010 gets it, don't hold your breathe unfortunately
We have to wait...
and yes..4v