Evolution performance 2011 mustang

**Transamws6** · 05-06-2010, 04:54 PM

Originally Posted by wheeliE-maxx

Didn't say they were weak, but I'm guessing an iron 460 will hold up better in extreme conditions. Nothing makes them especially great for boost. It just "wakes them up" because the heads flow so little to begin with

Yes, the heads do flow pretty weak. For example, I bought this months Hot Rod magazine, they got a junkyard 2V from a crown vic, tested new TFS Heads, had the stock bottom end, and stage 2 npi cams, made 450@ the crank. Just shows how much they can be woke up with different heads.

**wheeliE-maxx** · 05-06-2010, 05:55 PM

i'm not even sure how they make 260 horsepower NET stock. the heads flow 160 cfm on the intake side, terrendous (terrible+horrendous). My 350 iron smogger lumps chevy calls cylinder heads flow just over 200 intake

**Transamws6** · 05-06-2010, 06:23 PM

Originally Posted by wheeliE-maxx

i'm not even sure how they make 260 horsepower NET stock. the heads flow 160 cfm on the intake side, terrendous (terrible+horrendous). My 350 iron smogger lumps chevy calls cylinder heads flow just over 200 intake

Oh man, just think about what the NPI heads flow like

**wheeliE-maxx** · 05-06-2010, 06:25 PM

5 or 10 cfm less, it's mostly the intake manifold and cams which you can do cheap

**Transamws6** · 05-06-2010, 06:37 PM

Yea, if I can remember correctly, you get about a 40hp or so gain from the PI intake swap, with custom cams to go along with it.

**big hammer** · 05-06-2010, 06:39 PM

Originally Posted by Transamws6

But to get back on topic, yes, this GT obviously responded well to the little bolt on's, but I'm reading mixed opinions on how it will respond to FI, some guys are saying it will respond well to forced induction, some are still saying it won't?? Guess we'll just have to see? I'm at a lost with that.

my est guess--- the 5.0 will respond well to boost after it has been built for it. right now it is too high compression to accept serious amounts of boost.

throw some low compression forged pistons in there and look out...

**Packy** · 05-06-2010, 08:24 PM

Originally Posted by big hammer

my est guess--- the 5.0 will respond well to boost after it has been built for it. right now it is too high compression to accept serious amounts of boost.

throw some low compression forged pistons in there and look out...

But it will like the gas in the N2O variety!

Just like our famed high comp LSX's do.