Alot of good butt kicking potential with that 2v OHC architecture.

 

I think you're forgetting the most important thing... a warranty. I'd take 365+ SCHP w/warranty over 400schp on a stock bottom without a warranty.

 

For 2007-2008 Ford has a 3/36 warranty on new car dealer installed FRPP Superchargers (400HP and 500HP). No reason why they wouldn't extend that to the full 5/60 when factory installed on production cars. The warranty just adds a few dollars to the cost.

 

From the looks of it, the 500hp super pack isn't covered, but the 400 is

 

I stand corrected.

I mistook to Limited warranty icon on the FRPP web site as being applied to the 500HP kit.

The 2008 Accessories brochure only lists the 400 HP for the GT and 600 HP GT500 kit with a warranty

 

Yeah, and another bummer...
Looks like the warranty on the S/C is 1/12,000 not 3/36,000
At least its something...just wish it covered the whole bumper to bumper

 

???? If installed on a new car (at delevery) it's 3/36. Any other car up to the end of the normal 3/36, it's 1/12. Either way it doesn't have any effect on the rest of the cars normal bumper to bumper warranty.

 

Just saw that...thanks LB
Tres cool...

If warranty was my issue... it would suck.
I'm not new..nor do I even have a year left on my factory 3/36
DOh

 

Nice idea, Rhumb, but I think you're a bit optimisic on the HP #s. Unless Ford has managed to do some more tricks with the 4V heads, you just can't get enough air into a N/A small bore Mod Motor to turn those sorts of HP #s in emission legal form. 350 HP for the 4.6 and 390 for the 5.4 would be more like it.

I agree a nose heavy 5.4-4V would be more in line with a 69 Mach 1 428 than a Boss.

Regarding weights, those 4V heads are HUGE and HEAVY. A complete 4V head weights around 30 lb more than a 3V head (each head). An AL block 4.6 4V weighs 61 lbs more than the AL 4.6-3V.

With the iron block 4V the situation is even worse, add 60 lb for the heads and another 90 lb for the 5.4 iron block and another 20 lb for all those other 5.4 extras, longer rods, longer cam chains, larger intake, bigger crank, bigger vibration damper, etc. It all means a N/A 5.4-4V will weigh 170 lb. more than the 4.6-3V.

As the after maket tuners have already demonstrated a S/C 4.6-3V appears to be the best HP to weight trade off. It would weigh "only" 560 lb. and could safely have 375 HP and lots of torque with a Ford factory warranty and probably better gas mileage than a 5.4 NA.

Approximate Mod Motor weights:
4.6-3V: 460 lb (AL block) 310 HP
4.6-4V: 521 lb (AL block) 320 HP
4.6-2V: 530 lb (FE block) 260 HP
4.6-3V S/C: 560 lb (AL block) 375 HP est.
5.4-3V: 570 lb (FE block) 350 HP est.
5.4-4V: 630 lb (FE block) 375 HP est.
4.6-4V SC: 690 lb (FE block) 390HP
5.4-4V SC: 730 lb (FE block) 500 HP

 

Is the Boss Mustang really going into production? '08 is the Bullitt, '09 is the last year before the refresh. Would they really put out a one year only 5.4L powered Boss Mustang?

 

Yeah they could... its not a brand new motor anyway, just some mods to an existing one.

But if they carry over the powertrains the first year of the refresh, they could get more than one year out of it, or just use it at as a one year 400+ N/A engine till the BOSS motors are ready

 

Hopefully it's more than one year. I'd like to see some aftermarket parts get developed. My fear is the aftermarket won't take off for the Boss because it would be for one year only.

 

Despite the detractors of the GT500's iron block, its only about 45 pounds heavier than the 4.6 iron block.

However on a more positive note for anybody wishing to give thier fellow GM buddies the middle finger, the 3v 4.6 V8 in the Mustang weighs in at 420 lbs fully dressed compared to GM's LS engines which weigh 445 pounds fully dressed, so much for the compact lightweight nature of the LS engines , Now if only we could fix that displacement penalty.

 

Check the FRPP catalog, page 67 for the dressed weight of the engine.

 

Already got MY Boss...All aluminum 302, 400hp, awesome suspension and brakes, fuinctional shaker... </p>

 

Yeah, you know we all hate you right?

That is a very nice Stang!

 

Don't be mad; I've got a brand new one on the showroom floor you can buy... :stickpoke:

 

What I was saying is that the 5.4L iron block weighs 90 lb more than the 4.6 aluminum block.

Looking at page 69 of the current FRPP catalog, it says that newer 5.4L iron blocks weigh 15 lb more than older blocks, or 200 lb for a current 5.4L iron block.

So I stand corrected, a current 5.4L iron block weighs 115 lb more than a 4.6L AL block

 

The 460 lb weight I gave for the 4.6L - 3V is "Fully Dressed"

Since the FRPP catalog says "dressed" something(s) must be left off. 530 lb is a well published weight for the old 4.6L - 2V iron block, "fully dressed". I find it hard to believe that the 3V engine dressed the same is 110 lb lighter.

In any case, if we use the 420 lb figure for the 4.6-3V, to come up with the weight of a N/A 5.4-4V we need to add 115 lb for the block, 60 lb for the heads and at least 30 lb for incidentals, larger: crank, rods, front cam chain cover, intake manifold, timing chains, etc.

420 + 115 + 60 + 30 = 625 lb or only 5 lb less than the 630 lb I gave in my earlier post, but "fully dressed" it may weigh as much as 675 lb.! ! ! And in GT-500 S/C form the 5.4 weighs somewhere between 730 and 775 lb! That's 100 to 150 lb heavier than a Boss 429 ! ! ! ! Any way you cut it the iron block 5.4-4V is a pig heavy engine!

 

Of course theyre making the Boss. Gotta keep the gearheads at SVT busy right?