300 rwhp 4.6

dstang01 · Dec 7, 2007

Hey guys,
Im just wandering over here from the 94-95 5.0 section to learn more about "that other mustang V8" I was curious what the most popular way to get to 300 rwhp with the 4.6 is, and what it usually costs. Let's assume that we are talking about 99+ or PI swapped 96-98 2 valves. With the 5.0, we usually do an h/c/i swap and a few bolt ons, and that gets us right around the 300 mark. The 4.6 heads are already good (unlike the crappy stock 5.0 heads) so Im sure you guys dont do h/c/i (also probably quite expensive) whats the plan for a 300 rwhp 4.6?

CobraRed_96_GT · Dec 7, 2007

if you search im sure you'll find what your looking for. But on the 4.6 n/a power inst so easy. to get 300rwhp your going to need to port+polish those PI heads, agressive cams and all bolt on's. It's best just to throw some boost at it

Tim2002GT · Dec 7, 2007

Actually, you will more than likely need heads, cams, and full exhaust to reach 300 rwhp with a 4.6. Most people don't buy aftermarket intake manifolds unless they're running some type of forced induction.

The easiest and most common method of reaching 300+ hp is supercharging.

[BlackDiamond] · Dec 7, 2007

ya, us 4.6 owners are cheaters...

Crzyhrse · Dec 7, 2007

[BlackDiamond] said:
ya, us 4.6 owners are cheaters...

Not if you have a Mach 1 . Catback, Midpipe, CAI, Tune.....300RWHP.

scupking · Dec 7, 2007

Full exhaust (LT headers, Mid Pipe, Catback), a stage 1 cam (comp 262), Steeda U/D pulleys, 75mm TB, Plenum and a 93 Oct tune. Those mods should put you around 300 rwhp.

AntiRice98 · Dec 7, 2007

CobraRed_96_GT said:
if you search im sure you'll find what your looking for. But on the 4.6 n/a power inst so easy. to get 300rwhp your going to need to port+polish those PI heads, agressive cams and all bolt on's. It's best just to throw some boost at it

You don't need all the bolt ons. or aggressive cams. I have mild street cams with almost no bolt ons and i have 305rwhp and 328rwtq

CobraRed_96_GT · Dec 7, 2007

AntiRice98 said:
You don't need all the bolt ons. or aggressive cams. I have mild street cams with almost no bolt ons and i have 305rwhp and 328rwtq

well that's an anomaly - which are never good examples

scupking said:
Full exhaust (LT headers, Mid Pipe, Catback), a stage 1 cam (comp 262), Steeda U/D pulleys, 75mm TB, Plenum and a 93 Oct tune. Those mods should put you around 300 rwhp.

I believe there are more than a handful of guys running this set up here and arn't at 300hp

scupking · Dec 7, 2007

CobraRed_96_GT said:
well that's an anomaly - which are never good examples

I believe there are more than a handful of guys running this set up here and arn't at 300hp

Yup and that’s why I said close to 300 rwhp. If you change your intake (like a P-51) then you would probably make it to 300+ rwhp.

TGJ · Dec 7, 2007

CobraRed_96_GT said:
scupking said:

Full exhaust (LT headers, Mid Pipe, Catback), a stage 1 cam (comp 262), Steeda U/D pulleys, 75mm TB, Plenum and a 93 Oct tune. Those mods should put you around 300 rwhp.

Click to expand...

I believe there are more than a handful of guys running this set up here and arn't at 300hp

There is more than a handful of guys running this set up and are just over 300RWHP.

SVT32VDOHC · Dec 7, 2007

Biggest gains are cams and L/T's at the same time with a good tune.
Here is everything you need to know about 4.6L N/A performance using stock heads and intake.

http://www.alternativeauto.com/prodserv/2v-cam-package.html

Winters98GT · Dec 7, 2007

mild head work, cams, stock exhuast manifolds, untuned, 279/314 on my car

LT's and a tune proboly would have got me there, but I am not sure.

Zax · Dec 7, 2007

Maybe bolt on's and a good tune would get you close. Add ported heads and cams and I would think you are easily there and then some.

scupking · Dec 7, 2007

Zax said:
Maybe bolt on's and a good tune would get you close. Add ported heads and cams and I would think you are easily there and then some.

But your sig says you have a 99 Cobra.

Zax · Dec 7, 2007

Yeah, I had an 02 sonic blue GT before this car.

Poisoned Pony · Dec 7, 2007

I did 283rwhp and 298rwtq with the following mods on a 2000 GT 5-speed:
- Steeda pullies
- K&N conical filter
- VT Stage 1 N/A cams
- CompCams Beehive springs
- BBK LT's
- BBK Catted X-pipe
- Magnaflow catback
- 4.10's (not sure of any effect they have)
- custom tune via Predator

I have a feeling I'll be over the 300rwhp mark soon. I have an Accufab plenum and TB sitting on my living floor right now, plus I swapped the catted X for a O/R one. I'll probably switch to a MRT cold air really soon here as well. My main problem is that I'm moving to California for the 2 years. I'll probably take a hit with the crappier gas

steedastangt · Dec 8, 2007

AntiRice98 said:
You don't need all the bolt ons. or aggressive cams. I have mild street cams with almost no bolt ons and i have 305rwhp and 328rwtq

Kinda hard to believe. When you say "almost no bolt ons" does that mean everything but a blower? Not calling you a liar. I've just never seen a near stock PI car lay down close to 300 at the wheels. Cams arent that magical either.

fisttaface · Dec 8, 2007

h/c/i full exhaust tune should be around 300 -315 rwhp

patriot stage II heads
Comp / VT stage II cams
Longtube header
o/r mid pipe
catback (does nothing really)
p-51 intake manifold / hardballer
tb/plenum
jlt cai
ud pullies
sct tune

fisttaface · Dec 8, 2007

oh i know 100 shot of nos with do it just fine and cost ya maybe 500-700 bucks. Thats should put you over 330 rwhp

roundboy · Dec 8, 2007

i have stage 3 heads, vt stage 2 cams, and all bolt ons. My car makes 308rwhp and 311 rwq. i have a trick flow intake on the way so we will see if it makes good power on a n/a car.

300 rwhp 4.6

dstang01

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CobraRed_96_GT

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Tim2002GT

[BlackDiamond]

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Crzyhrse

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scupking

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waiting for the next hack atta

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Whoop...whoop-whoop-whoop-whoop...GANGNAM STYLE!!!

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