BEST HEADS FOR 4.6

if you're trying to buy heads for your v6, don't. you'll spend far too much money for poor gains (compared to a v8). buy a new mustang, cobra if funds allow.

why I continue to mod my 2v? I do not know.

You could also port and polish the stock heads...but might as well go aftermarket since it's out.

DAZ said:

Can anyone suggest the best heads to use for adding HP. I plan on supercharging eventually. I want to maintain street driveability and highway use. Is there a head manufactured that would be good for a daily driver and allow good gains for a supercharger?

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PI heads will easily flow enough with a blower to overpower a stock 2V bottom end. Unless you're building a monster with a complete forged rotating assembly, I'd stick with stock PI units. They can be had pretty cheap, they flow well, their ports & cams lend themselves to maintaining good low RPM torque (you're looking for a good daily driver, right?)

You can mill out the emissions dam in the combustion chamber to take a tick or two off the compression (more blower friendly) if you like. If you go this route and are using junkyard parts, then while they're apart treat them to a good valve job.

Its all about the Benjamins...

VT Engines, Fox Lake, Steen Racing, MPH are all companies i personally would let port my heads.

billfisher said:

#1. 05 ford GT.
#2. 03-04 4v.
#3. navi 4v.
#4. 96-98 4v.
#5. any 4v.
#6. 04+ 3v.
#7. any ported PI 2v.

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Can you just slap on 03-04 Cobra heads on a 4.6L SOHC GT block??

Stang|ess said:

why I continue to mod my 2v? I do not know.

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I know right? ...me neither

UDTBadkarma said:

I know right? ...me neither

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I met up with a couple Mustang owners, and there were 2 Mach 1s with very minimal mods with 300 at the wheels. Ill be lucky to have that much after I'm done with my mods

Stang|ess said:

I met up with a couple Mustang owners, and there were 2 Mach 1s with very minimal mods with 300 at the wheels. Ill be lucky to have that much after I'm done with my mods

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geeze....my GOAL is 300 rwhp. And that will take everything in my sig + a possible Long Tube header change over + stage II cams and a tune + CAI. And look at all my mods already....

tomustang said:

4.6 for what?

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Good question. I just assumed 2v

I would just look at the bench flow numbers of some of the bigger brands. I have been looking at heads for quite awhile now, eg. hours into reading and if I was going to go out and by a pair of heads tomorrow, and my equation was horsepower per dollar I would look into the steen racing heads. I havent heard any bad reports and there prices seem to be very competitive. Of course this is the same with MPH but from what I have seen they seem to be bit on the high side...

i'm certainly not an expert at swapping heads, buit i am certainly getting a set. my personal plan is to get them and a 2 covers. the only mismatch i have ever heard of is the cover. i will get 2 covers, a navi and one that goes with what ever heads i buy. cut and graft wherever there is a mismatch. drill steamholes or any other changes that need to be made. i only expect a cover mod.

the 05 3v block that had 4v put on it for the aluminum block had the front cover modded. MMFF this year.if i have to do a cover mod i will certain publish it here.

Where does one get 03-04 Cobra heads? I am looking to upgrade down the road and have read they are a good bang for the buck (like 30-40hp for ~$500).