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It could be made of 14kt gold but it doesnt mean that it makes more power over ported PI's. :dunno And on the spark plug issue, that means nothing to me because ive never had a plug issue anyway.
Give yourself a pat on the back! They make more power on proper builds, you have ported heads on your car? If so you will see when I make more power than you.
 
I wonder if a 4v 4.6 makes more power than a 2v? I wonder if you could get 4v flow out of a 2v whether it would make more power than a stock design PI headed 2v. All these things just make me wonder.

BTW, both of you guys have wasted money on heads by your standards since both of your setups could be done without ported heads. Just saying
 
I haven't wasted any money, stock heads won't support the power level I want. And to me its not worth risking an engine on heads that have been known for failures ie. broken valves and spark plug blowouts

I was talking to baker and y2k. But just so you know, stock heads can support over 600rwhp with upgraded springs, enough boost and the right set of cams
 
BTW, both of you guys have wasted money on heads by your standards since both of your setups could be done without ported heads. Just saying
I have wasted tons of monies on my car, but I didn't waste money on tf head.
I would have bought them "if" they performed the way they were advertised.
 
^+1

And what are your mods to make this 680+ that you are going to make blue? You saying, "watch when i make more power than you", is a childish statement when your setup and my setup are probably nowhere near the same. The heads alone are not what determines "making more power than you". What are your mods exactly Blue to hit this near 700rwhp??
 
I subscribe to Muscle Mustangs and Fast Fords magazine.

I remember reading a letter from a reader that said that he made only 283 rwhp in his New Edge mustang with the Trickflow heads AND the Trickflow stage 1 cams. If I remember correctly his car was an automatic (which would lower the results vs. a stick car) but he did have all the possible bolt ons you could imagine. Now those results SUCK, IMHO.
 
Yeah and think.... he spent 2500-2750 for that head and cam combo and and still piss poor slow. There had to have been a reason (excuse). :rolleyes:
 
Hell, my car made 199rwhp before when something was wrong with my car. Does that mean that my cams or heads are junk? We have no idea why that guy put down 283 to the tires. Could be anything. Most likely not his choice of heads.

What you guys are forgetting or failing to realize is that they hands down flow better than even the best ported pi head available. How would they make less power? Maybe with a huge cam and aftermarket intake manifold they would lose some torque down below 3500, but who gives a rats ass about losing a few hp below 3500? Anyone that is scared of that should even be doing aggressive cams
 
Discussion starter · #111 ·
so when I started this thread I didn't realize I was going to start WWIII...

Very good opinions from everyone though.

While these heads do have attirbutes that make them superior to stock heads, it sounds like without the supporting modifications, these new TFS heads barely outperform ported PI's. It seems like the limiting factors are the other mods that would limit airflow, rpm, and displacement (we are still dealing with only 4.6 liters here).

IMO we aren't seeing the potential of these heads primarily because of the small displacement of our motors. Eventually it doesn't matter how well the heads flow or how much power they can support because 4.6 liters is only going to make so much power (rev limited of course).

Look what ford did to finally make a 400+ hp NA mustang GT... sure they made the 2011 GT DOHC, but they also increased the displacement of the motor to complement the better flowing heads and achieve the desired power numbers. I know they did a lot of other things (increased CR, actual headers etc.) but the motor is 0.4 liters bigger.

Despite the huge amount of negativity towards these heads, I think I am going to buy them based on my situation:

1. My setup is blown making the flow rates of additional pieces less relevant.
2. My built motor will have the increased displacement to complement the heads.
3. I never ripped into my stock longblock and upgraded to ported PI heads in the past.

My car is still a daily driver and I feel like these as cast heads are more streeable than say stage 3 ported PI heads whiling making the same amount of power give or take. Now it is just a matter of determining if I want the 185's, fox lake's ported 185's, or wait for the 195's to come out next year.
 
i still want to know what TT setup Blue is using. IF he plans on 700rwhp then it has to be a TT setup. If not, it better be a YSI or F1a. Guy is setting himself up for some disappointment.
 
Look at the comments on this youtube vid....

Guy makes 390rwhp with these heads and 10 pounds and some custom cams... Unix made 470rwhp with stock heads and 9 pounds with cams) ANYWAY.... Read further down and he says that TFS told him that a similar car at 15#'s made 707rwhp. Now mounder thinks with 5 more pounds he will see 300 more rwhp. :rolleyes: They will say whatever for a sale.

take note of ANOTHER EXCUSE in the comments. lol

 
all i did was a search.... I am TRYING to get in line with you guys to get on the train but just cant do it!
 
Oh I know I have been around plenty, thats just not the route I chose. You can FORCE air into anything but I want to make 680+ efficiently
Forced induction is forced induction. You aren't making anywhere near 600 without seriously force feeding a 4.6. Ported heads or stock heads, stress levels on your motor are huge. You might have to push an additional couple psi to reach the same goal, but what does 2 psi really matter when you are already pushing like 18-20? Turbo can get away with less
 
how did anyone ever make it without the TF heads...

 
another n/a TF build... doesnt even hit 300rwhp...

 
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