[mister0big]

i have a question, what is the most horsepower and torque you have seen come out of the modular 4.6 sohc naturally aspirated in these cars, and what parts did it take, and how much did it cost? i bought one on leave and am going to put some money into the motor, in hopes to smoke the balls off my buddies 2002 gt. just looking for what has been done, how much, and the improvements.

thanks

[97stanggt]

well you could....


bore it 20 over - under 200
forged bottom end with racing bearings - 1200-1500
if not PI put PI heads on - 300 an some change
some blower cams - 600ish
a blower - 3,500-4,000ish
some comp cams beehive valve springs - 200
31spline rear end - 1,000ish if all brand new to take the new found power and torque
some suspension mods - another 1000ish to get the traction to the rear tires

or sell the 4.6 and buy a 5.4 and have alot better HP to TQ ratio and everything u put on the 5.4 goes further then the 4.6

i have just a stock 5.4NPI with PI heads with some stage 2 N/A cams and ill tell you it pulls way harder then the NPI 4.6 ever did and that would be enough to surpass ur buddy and thats untuned which i dont recommend mine goes in for base tuning tomorrow and should run better yet then the 24th she gets a dyno tune

now if u want to surpass ur buddy and some LT1s
put everything i just said in a 5.4 and do it all day long.

and this is if ur serious bout your car ;> if not it can be done cheaper with just a 5.4 implant and ull run circles around any 4.6 SOHC non FInduct.

[GMoney98]

you can just put on pi heads and pi cams and pi intake to beat his 2002. You can get those used for a decent price (200-400) and it will make a big difference. You have different pistons in your 4.6 and that will give you higher compression and more hp than ur buddies if his is stock. oh and X pype and 4:10 Gears!!

[330CubeGt]

Originally Posted by mister0big i have a question, what is the most horsepower and torque you have seen come out of the modular 4.6 sohc naturally aspirated in these cars,

Naturally Aspirated 4.6
348/496
Recipe for a 350 RWHP NA 2V

[mister0big]

thanks 97 stanggt and everyone else. how hard is it to swap to the 5.4? what type of costs to do it, and is their a kit or something ensure i have all the proper parts? will i have to change my transmission or any other parts?

i appreciate the help.

[Antfo89]

5.4 = overated

[97stanggt]

antfo=overrated all my 5.4 has in it is stage 2 cams and theres night an day from 4.6 to 5.4 its kinda lik 305 to 350

my 5.4 cost me 3000 but i completely rebuild it also a 5.4 can be had for about 1500 then you just need some adapter plates a pi intake and a tune so
plates-300
pi intake-150
tune-if you have like a xcal already tune be like 400 if not 800 for xcal and dyno tuning

go here start on page 1 read to page 245 ;> youll be very well versed then
Anyone intrested in 5.4L swaps, in here. Need you to opine. - Page 245 - Mustang Forums

[4.6LMadness]

I'm sorry but a 5.4 isn't over rated. its a bigger motor. anything you do to a 4.6 you could do to a 5.4 and end up with more power. Ever heard the saying "There's no replacement for displacement." There is some truth behind it.

[JiMi_DRiX]

I think the whole 5.4 thing for the most part is just being able to say you did it, because it is definitely quite the feat, and one hell of a job and accomplishment. But you can build up and make big power out of the 4.6 just the same. Although the big block sound and feel is nice too!

[330CubeGt]

Originally Posted by Antfo89 5.4 = overated

Explain.I would love to hear this...

[330CubeGt]

Originally Posted by JiMi_DRiX I think the whole 5.4 thing for the most part is just being able to say you did it, because it is definitely quite the feat, and one hell of a job and accomplishment. But you can build up and make big power out of the 4.6 just the same. Although the big block sound and feel is nice too!

We can go back and forth all day.But stock for stock the 5.4 is a better motor.And Bolt on's for bolt on's the 5.4 will still make more power(hp and Tq.When it comes to Boost nitrous etc.the 4.6 and 5.4 limits are about the same in Stock form Due to the Rods and anything over 400+ hp Is on borrowed time anyways.HP Wise the 5.4 only has a small advantage but its the Torque that's a big jump.Its all debatable tho,there are Pro's and cons from both engines.

[JiMi_DRiX]

TORQUE, you sir make a huge point, that didnt come to mind when I was thinking about comparisons.

[mister0big]

thanks again everyone for the info. so what is the max horsepower you can get out of a 4.6 and 5.4 block(for each).

[97stanggt]

how much money do you want to spend? theres 1000+ 5.4s and 4.6s HP wise but tq the 5.4 will always make more

[NO_PI_NO_POWER]

I wonder what kind of power the 2v GT that ran 10.8@121 on the motor, made?

[mister0big]

i would like to spend less than 5 grand on this, around 2-3 would be great. do you have some ideas? what do you think it would cost to either rebuild my engine, or put a 5.4 in. and which would be better with cost for performance?

[Regulator]

Originally Posted by NO_PI_NO_POWER I wonder what kind of power the 2v GT that ran 10.8@121 on the motor, made?

Ken B from ModularDepot? I think it was upwards of 350, with the car gutted all to hell. Big compression pistons and custom grind cams that were not "street friendly"

Any 2v that's making over 310ish at the wheels on the stock casting heads has to be running some monster cams and/or high compression.

Now ModularDepot just released a dyno graph of a stock displacement 2v with a pair of the new Trick Flow heads with some OTS Comp cams, and it made like 353 at the tire. Those new heads look pretty serious.

[Regulator]

Originally Posted by mister0big i would like to spend less than 5 grand on this, around 2-3 would be great. do you have some ideas? what do you think it would cost to either rebuild my engine, or put a 5.4 in. and which would be better with cost for performance?

Why not go 4v?

[the misfit wolfie]

Originally Posted by mister0big i would like to spend less than 5 grand on this, around 2-3 would be great. do you have some ideas? what do you think it would cost to either rebuild my engine, or put a 5.4 in. and which would be better with cost for performance?

if your looking to spend up to 5k, you might want to consider staying with your motor, and getting stage 1 or 2 cams, pi intake, have your stock heads ported,(staying with your npi heads will keep the compression the same so you can do nitrous or turbo later.) and buy all the boltons you can. like under drive pulleys, t-body and plenum, cai, coil packs, exhaust, etc... you should be at or around 300 rwhp at the end of that if im not mistaken. then if thats still not enough, you can always go gears.

[GMoney98]

Originally Posted by the misfit wolfie if your looking to spend up to 5k, you might want to consider staying with your motor, and getting stage 1 or 2 cams, pi intake, have your stock heads ported,(staying with your npi heads will keep the compression the same so you can do nitrous or turbo later.) and buy all the boltons you can. like under drive pulleys, t-body and plenum, cai, coil packs, exhaust, etc... you should be at or around 300 rwhp at the end of that if im not mistaken. then if thats still not enough, you can always go gears.

Those are the mods I have done except i didn't p/p my heads and they are pi. Once i get eveything done i will post a video for you to see if thats what you want to do.