Iron Heads Only Combos

final5-0 · Oct 4, 2007

Hi Folks

I did up a chart of iron heads in another thread and then realized I had
left out a group of iron heads

Here is that same info with

Iron OEM heads that have been modified by ........
porting, valve size upgrades, etc

Some of these dyno values are STD and others SAE ... don't be mislead

Hope this gives ya'll an idea of what is possible ... or ... Not

Grady

blksn955.o · Oct 4, 2007

Hey grady nice list...I hope to add mine when its fully tuned and setup.

FWI- for now its...

Thumper gt40, Tmoss ported Explorer, TFS1, 251/285, OEM, 98gt, 24, 1.6, Flow-tech u/e shorty, OEM, flow 2.5, 30* timing, -conditions were 99* high humidity (I think the final number for the day was around 70%)-.

...with abit more in it.

5spd GT · Oct 4, 2007

I love comparisons

final5-0 · Oct 4, 2007

Well Greg

I can't take credit for the list as I scarfed it up from another site

I did load it into Excel so I could better analyze the data

Grady

final5-0 · Oct 4, 2007

I guess since this is MY thread

I can deviate a bit from the original subject

From this point in time ...
If any of you see stuff I post up here that you might want to refer to at some
later date ...

Better save it fairly quick after I post it up :Word:

Pretty soon .....
I'm gonna start to kill some of these older thread files on my host site as I place
more of a priority on the tuning stuff I keep there.

Things are starting to get a bit crowded over there

A public announcement of sorts ... if you will

Grady

blksn955.o · Oct 4, 2007

It is a good list either way.

saved as...

thanks for the warning

The Green GT · Oct 4, 2007

Good to know.

SO once I get my ported Cobra intake, I should be able to get some GT40P heads, port them, and a afm b25 cam, and a bigger TB and some 42# injectors and hit over 300 RWHP if that list is correct.

I would get 30# injectors, but I am also saving for a KB. Gotta plan for the future.

final5-0 · Oct 4, 2007

The Green GT said:
Good to know.

SO once I get my ported Cobra intake, I should be able to get some GT40P heads, port them, and a afm b25 cam, and a bigger TB and some 42# injectors and hit over 300 RWHP if that list is correct.

I would get 30# injectors, but I am also saving for a KB. Gotta plan for the future.

Well Eric

Here is my take on looking at data such as this

If you take ALL the OEM block with OEM parts based combos you can find and look
at the percentage of them that top 300 rwhp you will start to see things like this
that I believe should be considered.

First of all .......

Some of those 300 rwhp combos are done with the STD rating which is usually
a bit higher than SAE and it is that SAE rating that was the original bench mark
of reference as I see it.

Then you will find that ......
Just cause you can say you got to 300 rwhp for a peak value ...
the low end has become a bit soft in the quest for that peak value.

This really does not matter if you look at a strip kind of application
but
A power band like that does not always make for the best street car.

Lastly .........
You don't really know what all was done to those exceptional combos

There is a reason why they excelled beyond most other similar combos

Some of the times ...
the reason might not be something that can be duplicated in a street combo

Things such as ....
no serp belt
race gas
etc

Then there is always the possibility of .......
the dyno could be a few percent off during the pull

Say you had a 300rwhp pull that displayed elevated values by 3% .....
Thats 300 x .97= 291

Just said all this to have you consider the trends you see in data
as opposed to
Hoping or Expecting you can duplicate the exceptional combo with ease

I am not trying to be negative
I am trying to keep it real here

Hope some of this makes sense

Grady

The Green GT · Oct 4, 2007

Im getting a ported Cobra intake soon.

You think with some GT40P's and a nice cam, matching inj and MAF, I could make around 275 to the wheels in? Id love that.

final5-0 · Oct 5, 2007

The Green GT said:
Im getting a ported Cobra intake soon.

You think with some GT40P's and a nice cam, matching inj and MAF, I could make around 275 to the wheels in? Id love that.

Well Eric

I looked at your sig and I see 1.7 rr's and a cai for motor mods

You add those to your parts above and you're off to a good start

Here is a crude way to look at the objectives

Lets trace the air flow path

cai=Y
maf=Y
tb=N
intake=Cobra ported
heads=40p's
headers=n
mid pipe=?
catback=Y

Lets look at fuel needs

fuel pump=?
inj=Y

Now the valve train
cam=Y
springs=?
rockers=1.7

Finally .. the misc items
pulleys=?
tune=chip

Now ... lets address the N's & ?'s in each category

tb=oem is fine
headers=oem will hurt you ... but not all that much
mid pipe=if its the oem 4 cat pipe ... greatest restriction of all this group of parts

fuel pump=the tiny OEM pump will not cut it

springs=you want a nice set from Comp, Crane, etc

pulleys=good hp/tq gain through out the ENTIRE power band

You might do 275rwhp or perhaps a bit more ... I F ... you do the
above plan with headers, mid pipe, and a set of pulleys

You might have to get that ........ Hack of a tuner
To do you a chip reburn

I'd go with the better low/mid range torque advantage of LT's
and
The off road h or x pipe of your choice when you upgrade exhaust

Grady

fiveoho · Oct 5, 2007

nice thread

subscribing...

The Green GT · Oct 5, 2007

final5-0 said:
Well Eric

I looked at your sig and I see 1.7 rr's and a cai for motor mods

You add those to your parts above and you're off to a good start

Here is a crude way to look at the objectives

Lets trace the air flow path

cai=Y
maf=Y
tb=N
intake=Cobra ported
heads=40p's
headers=n
mid pipe=?
catback=Y

Lets look at fuel needs

fuel pump=?
inj=Y

Now the valve train
cam=Y
springs=?
rockers=1.7

Finally .. the misc items
pulleys=?
tune=chip

Now ... lets address the N's & ?'s in each category

tb=oem is fine
headers=oem will hurt you ... but not all that much
mid pipe=if its the oem 4 cat pipe ... greatest restriction of all this group of parts

fuel pump=the tiny OEM pump will not cut it

springs=you want a nice set from Comp, Crane, etc

pulleys=good hp/tq gain through out the ENTIRE power band

You might do 275rwhp or perhaps a bit more ... I F ... you do the
above plan with headers, mid pipe, and a set of pulleys

You might have to get that ........ Hack of a tuner
To do you a chip reburn

I'd go with the better low/mid range torque advantage of LT's
and
The off road h or x pipe of your choice when you upgrade exhaust

Grady

Ive got a chip I can burn to what I need, and I plan on freshening up the heads when I get them.

As far as fuel, I plan on getting a Warlbo when I get the jack. Probably after I replace some worn out suspension parts.

And I wouldnt be able to use the OEM headers with GT40P's anyway, and I would stick with shorties for ground clearances sake, and cost. And I already have a O/R H-pipe, and have the smog turned off in the comp. Now I just need to take the pump out and all the other crap.

final5-0 · Oct 5, 2007

The Green GT said:
Ive got a chip I can burn to what I need, and I plan on freshening up the heads when I get them.

As far as fuel, I plan on getting a Warlbo when I get the jack. Probably after I replace some worn out suspension parts.

And I wouldnt be able to use the OEM headers with GT40P's anyway, and I would stick with shorties for ground clearances sake, and cost. And I already have a O/R H-pipe, and have the smog turned off in the comp. Now I just need to take the pump out and all the other crap.

Sounds like a plan Eric so Good Luck

If you've dropped your Stang

I can see the concern for ground clearance and going with shortys

The peak power won't be all that much difference between them
but
The low & mid range difference can be quite noticeable

Just one thing more on the LT's and ground clearance

I still run at stock height so I couldn't comment on a low ride
but
I can say my Mac LT's hug the floor pan VERY tight
and
From all the pics I've seen of BBK LT's ... they do the same

I would have to wonder .......
Just how much difference it really is between the two choices

I'd be willing to measure low points on my OEM height ride if others
would be willing to do the same on their lowered rides

Might be helpful and an interesting bit of research
if
We can't get the answer from others who already know

Grady

The Green GT · Oct 5, 2007

Id like to see a ground clearance thread.

rj95svt · Oct 5, 2007

final5-0 said:
Sounds like a plan Eric so Good Luck

If you've dropped your Stang

I can see the concern for ground clearance and going with shortys

The peak power won't be all that much difference between them
but
The low & mid range difference can be quite noticeable

Just one thing more on the LT's and ground clearance

I still run at stock height so I couldn't comment on a low ride
but
I can say my Mac LT's hug the floor pan VERY tight
and
From all the pics I've seen of BBK LT's ... they do the same

I would have to wonder .......
Just how much difference it really is between the two choices

I'd be willing to measure low points on my OEM height ride if others
would be willing to do the same on their lowered rides

Might be helpful and an interesting bit of research
if
We can't get the answer from others who already know

Grady

I would absolutly be willing to measure the ground clearance on my car (stock headers and flowtech O/R Xpipe) because I've been debating if the longtubes hang down any lower at all. My car drags on practicly any obsticle. My car has still has the stock springs but it's a cobra and I'm not 100% sure the ride hight is exactly the same as a GT.

earleys94gt · Oct 5, 2007

Once again, Grady comes through with some VERY quality, complete info .

final5-0 · Oct 5, 2007

Somebody start a new thread then

Do it in tech

Give it a title that is descriptive and can be searched by others in the future

I'll go out and take some measurements later this afternoon
and
Post my findings in the new thread

Grady

Black95GTS · Oct 5, 2007

Nice work dude.

I'd love to see the graph of the GT40P, E-Cam, Cobra putting down 293 / 320. Do you have it? Those are stout numbers for the e-cam of fury. Do you know who tuned that car?

I need a mustang, stat.

Adam

final5-0 · Oct 5, 2007

Black95GTS said:
Nice work dude.

I'd love to see the graph of the GT40P, E-Cam, Cobra putting down 293 / 320. Do you have it? Those are stout numbers for the e-cam of fury. Do you know who tuned that car?

I need a mustang, stat.

Adam

The e-cam of fury

That never gets old :Word:

The thing about these combos is Adam .........

I just saw them listed on a chart on a forum

I got no numerical values or curves or anything like that

What we see here is what we get
so
Take em for what its worth

Grady

vladasap · Oct 6, 2007

grady #1

Iron Heads Only Combos

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