SO let me try to understand what you are saying here. Are you saying that the 2004 Mustang V6 has a 3.9 Liter engine in it? And that it does "NOT" have the 3.8 Liter engine? If this is true, then wouldn't the 3.9 liter engine put out a little more horsepower than the standard 193 horsepower that the 3.8 Liter 2001-2003 V6 Mustangs have? Please enlighten me on this. Thanks.
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szer0
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szer0
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szer0 said:What's the difference about the 2003/2004 hood
Oh I see it now. Yeah that hood is nasty.
FallenPhoenix
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PerformanceRed said:
More cubes means more power yes, but .1 liter isn't enough to notice. Anyone know the bore x stroke of the 3.8 to the 3.9?
If what you are saying is true, then it will be much harder to get parts for the 3.9 Liter engine when it needs service, unless everything on it is "universal" to the 3.8 Liter engine. I am not sure whether all the external and internal engine parts on the 3.9 Liter engine is "universal" and would also fit the 3.8 Liter engine? IMHO, the 3.9 Liter was a "waste" for Ford to build. Especially if they are going to build it only for 1 year. They should have stuck with the 3.8 Liter engine instead.
PerformanceRed said:
I don't know if you still don't belive that the 04 has a 3.9, but click here http://www.fordvehicles.com/Cars/mustang/features/specperformance/
you'll see
01White5spd said:
Why should you?
Have you installed a CAI yet? Have you swapped your exhaust yet? 2003, 2002 and 2001 V6's are all the same engine.
While your at it, throw in a 70mm BBK TB, that will make your car sound better
I think all ford did was change the crank out for the 2004's, so the pistons move down just a little more. I don’t believe they bored it out at all
The 3.9L engine is the same engine as the 3.8L basically. It's not a new design at all. It just has 6 more cubes. There are a number of different ways Ford could have gotten them.
External engine components should be the same. No way would ford ever put the money into developing a new engine for 1 year only. The only 3.9L engine Ford wants to soak money into right now is the LS/Jag 3.9L V8 (280HP). The 3.9L V6 is just a slightly revised 3.8L.
External engine components should be the same. No way would ford ever put the money into developing a new engine for 1 year only. The only 3.9L engine Ford wants to soak money into right now is the LS/Jag 3.9L V8 (280HP). The 3.9L V6 is just a slightly revised 3.8L.
Mean03V6
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PhantomGT said:Umm,apparently you have never owned a 01 cobra, because it isn’t just the engine, it's got a little IRS in the back, better suspension, and new front bumper which allows more air to come in, and it also matches the hood a lot better than the tacky V6/GT front end that we all got. Granted, if Ford threw the 01 cobra bumper on the v6, it would look a hella lot better, but they didn’t.
And your comparison on the ford emblem is not a good one, I would have compared it to something more or less like the Monaro to GTO or Charger to C300...
It's a hood......just a hood. 
Mustang5L5 said:
The general design is similar, sure the slowbra has 4-valves, but the basic intake is similar, minus the obvious 2 extra cylinders of course
open one up, you'll see.
There is a 03 engine in pieces at my local dealership and if i get time ill swing over there and snap some pics of the intake system and post em up (assuming they haven’t shipped the engine back to SVT that is)
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