Stock Heads

usafimj · October 20th, 2008, 11:39 AM

I was just wondering at what power level do the stock heads become a restriction

raycutchins · October 20th, 2008, 03:37 PM

Originally Posted by usafimj

I was just wondering at what power level do the stock heads become a restriction

To piggyback this question, what changed with the '08 heads compared to the '07?

usnzt84 · October 20th, 2008, 05:25 PM

i was wondering the same thing, b/c i just bought a set of 06 stock heads to port and put on my 08, did i just screw myself??

07 STROKER · October 20th, 2008, 05:29 PM

spark plugs changed....dunno what else

thumperer · October 20th, 2008, 07:50 PM

I probably would have bought the 08' heads just to run the better plugs.

usafimj · October 20th, 2008, 07:52 PM

+1 on the 08+ change on the spark plugs.

Anyone have an answer on what power level the stock heads become a restriction

beefmobile · October 20th, 2008, 07:59 PM

Originally Posted by usnzt84

i was wondering the same thing, b/c i just bought a set of 06 stock heads to port and put on my 08, did i just screw myself??

anything is possible with our imaginations...

07stanggt · October 20th, 2008, 08:00 PM

Originally Posted by usafimj

+1 on the 08+ change on the spark plugs.

Anyone have an answer on what power level the stock heads become a restriction

You would gain power now with them, i can answer you that much.

I was waiting for someone smarter then me to answer.

I thought i saw someone on here at one point say 500hp? but that seemed like a somewhat arbitrary number to me. I mean, FRPP sells superchargers that can take you to 450rwhp+ depending on other factors on stock heads.

The stock heads flow pretty well and some big hp engines are doing it on stock heads. If no one gives you an answer that satisfies tonight, i would call 1800ford788 in the morning. they can answer it as well as anyone.

usnzt84 · October 20th, 2008, 08:52 PM

im pretty sure i can use the 08 plugs on the 06 heads, so far i dont think there is any difference once you change the plugs, i would up grade anyway since i am going F/I

07stanggt · October 20th, 2008, 08:54 PM

Originally Posted by usnzt84

im pretty sure i can use the 08 plugs on the 06 heads, so far i dont think there is any difference once you change the plugs, i would up grade anyway since i am going F/I

Yea your good man.

raycutchins · October 21st, 2008, 11:41 AM

Originally Posted by 07stanggt

You would gain power now with them, i can answer you that much.

I was waiting for someone smarter then me to answer.

I thought i saw someone on here at one point say 500hp? but that seemed like a somewhat arbitrary number to me. I mean, FRPP sells superchargers that can take you to 450rwhp+ depending on other factors on stock heads.

The stock heads flow pretty well and some big hp engines are doing it on stock heads. If no one gives you an answer that satisfies tonight, i would call 1800ford788 in the morning. they can answer it as well as anyone.

I called and was told that there was nothing different from the '07 to '08 heads. The tech said that the heads are good to 550 (crank HP) but had no knowledge past that. He also said that ported heads gets you another 20-30 HP.

usafimj · October 21st, 2008, 11:51 AM

Hey thanks for the info ray

psycho bob · October 21st, 2008, 12:07 PM

kenne bell claims 775rwhp with stock heads/cams and forged bottom with the 2.8H mammoth.
Mammoth Supercharger

usnzt84 · October 21st, 2008, 02:44 PM

Thanks for the help guys!!

07stanggt · October 21st, 2008, 03:06 PM

Originally Posted by raycutchins

I called and was told that there was nothing different from the '07 to '08 heads. The tech said that the heads are good to 550 (crank HP) but had no knowledge past that. He also said that ported heads gets you another 20-30 HP.

Yep. 20-30 depending on the cams you choose.

raycutchins · October 21st, 2008, 03:23 PM

Originally Posted by 07stanggt

Yep. 20-30 depending on the cams you choose.

If you change cams depending on which type you get you may have to change your springs, but there are NSR (No Springs Required) cams out there. If you can ramp up the boost why upgrade a part that doesn't have to be changed, more dollars for something else. Ford did design these cars with road racing in mind.

usnzt84 · October 21st, 2008, 08:35 PM

i would probably get the springs and increase the boost, i am never satisfied, just limited by $$$$$$

bohica281 · October 21st, 2008, 11:49 PM

Hellion power systems did an article a few months back and made over 700hp to the tires with an upgraded bottom end(281 c.i.) and stock unported heads and stock cams.

06RedfireGT · October 22nd, 2008, 12:17 AM

^nice username lol

psycho bob · October 22nd, 2008, 06:03 AM

that's 2 forms of FI that are over the 700 rwhp mark with stock top end

October 20th, 2008, 11:39 AM	#1
usafimj I Post Entirely Way Too Much 2007 Ford Mustang GT 12.847 @ 114.12mph Join Date: Sep 2007 Location: Oklahoma City, Ok. Posts: 5,086 iTrader: 1 reviews	Stock Heads I was just wondering at what power level do the stock heads become a restriction __________________ 07 GT-- Gone But Not Forgotten Military Crew E-5

October 20th, 2008, 05:25 PM	#3
usnzt84 Regular 2008 Mustang GT Join Date: Apr 2008 Location: Charleston, South Carolina Posts: 224 iTrader: 0 reviews	i was wondering the same thing, b/c i just bought a set of 06 stock heads to port and put on my 08, did i just screw myself?? __________________ Vortech Supercharger,Hurst shifter, Diablo Sport Predator tune, Pypes O/R x-pipe, Super 44 Flowmasters,Hawk HPS Brake pads, Granitelli Slotted and Dimpled Rotors, Goodrich Steel braided brake lines, FRPP 3.73

October 20th, 2008, 05:29 PM	#4
07 STROKER MM's resident Juice head 07 Mustang GT Join Date: Nov 2007 Location: PA Posts: 7,920 iTrader: 0 reviews	spark plugs changed....dunno what else __________________ The MGW short throw shifter Its not just a shifter...It's a lifestyle!

October 20th, 2008, 07:52 PM	#6
usafimj I Post Entirely Way Too Much 2007 Ford Mustang GT 12.847 @ 114.12mph Join Date: Sep 2007 Location: Oklahoma City, Ok. Posts: 5,086 iTrader: 1 reviews	+1 on the 08+ change on the spark plugs. Anyone have an answer on what power level the stock heads become a restriction __________________ 07 GT-- Gone But Not Forgotten Military Crew E-5

October 20th, 2008, 08:52 PM	#9
usnzt84 Regular 2008 Mustang GT Join Date: Apr 2008 Location: Charleston, South Carolina Posts: 224 iTrader: 0 reviews	im pretty sure i can use the 08 plugs on the 06 heads, so far i dont think there is any difference once you change the plugs, i would up grade anyway since i am going F/I __________________ Vortech Supercharger,Hurst shifter, Diablo Sport Predator tune, Pypes O/R x-pipe, Super 44 Flowmasters,Hawk HPS Brake pads, Granitelli Slotted and Dimpled Rotors, Goodrich Steel braided brake lines, FRPP 3.73

October 20th, 2008, 07:50 PM	#5
thumperer Regular 02' and 08' Mustang GT Join Date: Mar 2008 Location: Los Angeles, CA Posts: 161 iTrader: 0 reviews	I probably would have bought the 08' heads just to run the better plugs.

October 21st, 2008, 11:51 AM	#12
usafimj I Post Entirely Way Too Much 2007 Ford Mustang GT 12.847 @ 114.12mph Join Date: Sep 2007 Location: Oklahoma City, Ok. Posts: 5,086 iTrader: 1 reviews	Hey thanks for the info ray __________________ 07 GT-- Gone But Not Forgotten Military Crew E-5

October 21st, 2008, 02:44 PM	#14
usnzt84 Regular 2008 Mustang GT Join Date: Apr 2008 Location: Charleston, South Carolina Posts: 224 iTrader: 0 reviews	Thanks for the help guys!! __________________ Vortech Supercharger,Hurst shifter, Diablo Sport Predator tune, Pypes O/R x-pipe, Super 44 Flowmasters,Hawk HPS Brake pads, Granitelli Slotted and Dimpled Rotors, Goodrich Steel braided brake lines, FRPP 3.73

October 21st, 2008, 08:35 PM	#17
usnzt84 Regular 2008 Mustang GT Join Date: Apr 2008 Location: Charleston, South Carolina Posts: 224 iTrader: 0 reviews	i would probably get the springs and increase the boost, i am never satisfied, just limited by $$$$$$ __________________ Vortech Supercharger,Hurst shifter, Diablo Sport Predator tune, Pypes O/R x-pipe, Super 44 Flowmasters,Hawk HPS Brake pads, Granitelli Slotted and Dimpled Rotors, Goodrich Steel braided brake lines, FRPP 3.73

October 21st, 2008, 11:49 PM	#18
bohica281 Newbie 2006 Mustang GT 13.35@106.14 Join Date: Mar 2008 Location: Jacksonville,FL Posts: 11 iTrader: 0 reviews	Hellion power systems did an article a few months back and made over 700hp to the tires with an upgraded bottom end(281 c.i.) and stock unported heads and stock cams.

October 22nd, 2008, 12:17 AM	#19
06RedfireGT One Man Wolf Pack 2006 Mustang GT 13ish....maybe Join Date: Aug 2006 Location: Regulatin On Some OGs Posts: 22,484 iTrader: 2 reviews	^nice username lol __________________ ΜΟΛΩΝ ΛΑΒΕ

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