[ga-mustang]

all right guys need some input-i know alittle about the v8 engines but am alittle lost on the v6's. i bought my wife a 2004 mustang 3.9l and am wanting to pull some more hp-and im not to sure which way to go-the duals are my first mod then cai but after that im lost-looking for some guidence. i have thought about a supercharger but im not wanting to spend that much yet. any help would be great--also has anyone upgraded their mach 460 system to the 1000 if so what is needed--thanks

[HMUSN]

welcome to the forums..

put gears in it.

[itschristorres8]

exhaust and intake might add 5rwhp together
gears and a posi would be a god first buy instead

[whtpny]

welcome
gears and posi in that ass end is a good start
check around and you might find some more things youd like to add just by searching or browsing the v6 forums

about the mach1000.. personally i would suggest a nice aftermarket system..

[ga-mustang]

hey i appreciate all the input

[whtpny]

no problem, it's what we're here for
are you from ga?

[xXsmokinaceXx]

ya gears and posi for sure i made the mistake of getting a CAI first

[GreenFaleen]

gears posi, then do some porting and a windstar intake swap, a cam and duals yyoull have a fun street car for not to much money

[MWWarlord]

Duels and CAI are not bad first mods depending on what you want. They won't give you much power but they make the car look and sound sooooo much better. Also gear and posi won't give you any more HP. They give a HUGE boost in TQ. However, gears and posi are a good upgrade for the cost.

[MWWarlord]

Also, I'm surprised that no one has mentioned a tuner. click the link in my sig to find out all you'll need to know about tuners.

[04mustang232]

+1 on the gears. and i wouldnt upgrade the 460, IMO our headunits suck and mine gets worse by the day.

[ga-mustang]

yeah we live here in covington ga

[whtpny]

Originally Posted by ga-mustang yeah we live here in covington ga

cool, welcome and enjoy your stay

[focus0frenzy1]

i got the 2004 3.9 also. I wouldnt go with the mach 1000, im looking at a full flush box with 2 solo 10's with a kenwood 1000mono amp. but thats a bit powerful.
anyways im looking at doing a s/c later down the road, but i dunno what i should do now though. i did dual exhaust and thats it. So ill be looking for advice as well. Thinking about getting a posi from my boy but i dont have money for the gears so its pointless. Then i as going to get bullet rims with new parelli's but my other friend wont answer his phone

[ga-mustang]

hey i appreciate all the input- my first step will be the duals and rear end - has anyone bought a supercharger-if so how much hp did you gain and were can i find one -- thanks in advance

[itschristorres8]

Originally Posted by ga-mustang hey i appreciate all the input- my first step will be the duals and rear end - has anyone bought a supercharger-if so how much hp did you gain and were can i find one -- thanks in advance

you can expect about 10-15rwhp per psi gain from a s/c kit
you can expect about 20rwhp per psi on a turbo

if your an auto-4.10s is a better gear to look at
if your 5speed look into 3.73s as far as gears go

[whtpny]

Originally Posted by ga-mustang hey i appreciate all the input- my first step will be the duals and rear end - has anyone bought a supercharger-if so how much hp did you gain and were can i find one -- thanks in advance

you can get pretty good power out of a s/c or a turbo, both will be pricey and have their own advantages and disadvantages, weigh your options and see which sounds more appealing to you

..also, another thing to consider.. chris can probably give you the specific on this, but if your going FI (forced induction, i.e. s/c, t/c, nitrous) then you might want to look at upgrading that rear.. it's been awhile since i traded in my six so I don't remember a lot of the stuff i learned, but i think there's a point somewhere around 300 or 350 rwhp where most suggest you upgrade the rear

like i said, i don't remember specific numbers, but I'd ask chris, I'm sure he can nail that down for you..

[ga-mustang]

hey chris was just checkn out your web site-very nice by the way. quick question tho the stage 4 combo you have forsale-what kinda hp/tq could i exspect out of that setup-also my wifes car is a 3.9 but i was thinking the engine was the same as a 3.8 just displacement diff -i could be wrong tho. and with the porting of the intake and heads a bigger t/body and injectors would be needed correct

[FEELLNFROGGY]

I don't know if it's been mentioned eyt, but keep in mind with the gears and posi. V-6 (for the new fellas) has a 7.5 inch rearend and gt has 8.8. If you can swap to an 8.8 inch from a wrecked GT or something, you get the sway bar quad shocks and all its all bolt up and the gear swap is easy since you already have the rearend dropped anyways

[itschristorres8]

Originally Posted by ga-mustang hey chris was just checkn out your web site-very nice by the way. quick question tho the stage 4 combo you have forsale-what kinda hp/tq could i exspect out of that setup-also my wifes car is a 3.9 but i was thinking the engine was the same as a 3.8 just displacement diff -i could be wrong tho. and with the porting of the intake and heads a bigger t/body and injectors would be needed correct

roughly 80+hp
you can expect about 70rwhp or more on an n/a application
on forced induction the gain is much greater, especially with the big valve heads