New Design SC heads

seawalkersee

seawalkersee

Registered User
I am not sure how far this will go, but tonight I found a site that can recast old parts. They had a 29 lincoln block and some door handles and such. I shot them an email and asked the probability and cost of a redesigned 3.8l ford head. In the post I suggested a thicker deck height and better exhaust port shape. If you are one of those guys that have some sort of knowledge about what else you would like to see, post it here and in the event they get back with me and it is a reality, I can suggest this to them.

On a different note, how much better would it be to go with a split port head and just an intake for our cars?

Chris
 
I suppost that could also be a possibility. I dont even know if this place will want to tackle this kind of project or not but I am trying to get things started. Only if they make like ten sets of heads I think there are ten people who would love to not have to worry about thier headgaskets again.

Chris
 
I would imagine the casting facility would gladly cast anything that you wanted, as long as you had a 3D computer model, or better yet, a pattern. I doubt that redesign is within thier offering and if it is, it would be cost prohibitive.
 
DamonSlowpokeBaumann said:
so far modified single port heads outflow modified dual ports.....SO ehhhhhhhhhhhhhhhhh,,,,Just my opinion
Click to expand...

What kind of numbers are you seeing, because SPI heads with stock valves
outflow the BV SC heads from all reports I have seen. Well, teh stock 1.45" SPI
exhaust can get close to 180 and that is on a very accurate 'bench. Stock
valve SPI intake ports are getting at least 30 more CFM than CMRE Stage 2
heads, easily.

BTW, www.newage-tuning.com is coming out with an intake that will
put an Eaton or AR blower housing on top of a Mustang V6 and it would
be easily adaptable to an SC car... I'm doing the cams for New Age and
the base kits will be getting around 400 BHP with SPI heads. I consulted
on the intake design, it will be pretty basic but still better than an SC intake.
I call the SC intake manifold the "pancake intake" for obvious reasons :D



Chris, I'd be willing to help if you ever get anything going, sounds like FUN!

Edit: FIXED LINK!
 
Last edited:
RGR said:
What kind of numbers are you seeing, because SPI heads with stock valves
outflow the BV SC heads from all reports I have seen. Well, teh stock 1.45" SPI
exhaust can get close to 180 and that is on a very accurate 'bench. Stock
valve SPI intake ports are getting at least 30 more CFM than CMRE Stage 2
heads, easily.

BTW, www.newagetuning.com is coming out with an intake that will
put an Eaton or AR blower housing on top of a Mustang V6 and it would
be easily adaptable to an SC car... I'm doing the cams for New Age and
the base kits will be getting around 400 BHP with SPI heads. I consulted
on the intake design, it will be pretty basic but still better than an SC intake.
I call the SC intake manifold the "pancake intake" for obvious reasons :D



Chris, I'd be willing to help if you ever get anything going, sounds like FUN!
Click to expand...


RGR,

The newage link doesn't work.

Please tell me more about the intake manifold. Got any pictures or concept sketches ? Made for bottom exit blowers ?

David
 
Yeah...It sounds pretty good. I actually have a set of these heads already. Course now I have to get new headers...I HATE FORD ENGINEERS...If we could have just had them pull their heads out of their @$$ before they put the final touches on these heads back in 83.

Chris
 
David Neibert said:
RGR,

The newage link doesn't work.

Please tell me more about the intake manifold. Got any pictures or concept sketches ? Made for bottom exit blowers ?

David
Click to expand...

Yeah, the new age site might be down or I gave the wrong URL, I'll check.

The intake is a bottom exit design, but has a designed-in (last I knew)
possiblilty for an IC, water-to-air. I may have some concept drawings, but
on my other computer so it'll be like tomorrow before I can show you. It is
really basic though, no big deal as far as design goes. Just a KISS theory
mostly, simpler is better for boosted intakes in most cases. We are reducing
pulley speeds to get the boost down to ~8 PSI right out of the housing,
and with a cam hope to hit over 300 RWHP. I have marketing rights and
am speccing and selling cams for the venture, and were the deal to fall thru,
I could probably get Constantin Andreev to allow me to proceed on my own
but I'd need help or have to re-do many of his efforts. They are using a
fabricated intake, but I canget anything that I can CAD draw cast here in
town for $15,000 start up costs. That would be 25 people paying around
$600-700 for intakes and that is a lot of people to get it going but not
impossible. I could get fabbed ones done for about that anyway, one at a
time. Or there is a CNC-machined possibility that I have considered for a
long time now, it would perhaps be easier yet but have some start up costs
as well, but lots less than casting new intakes. Either way I'd make it
universal, using adapter flanges to accept either Eaton or AR-style head
units. I think Constantin is doing a similar thing with his end of it.

If anyone wants to try, I am the SPI cam expert, my old Gen 1.5 SPI cam
is still killing the competitions latest efforts, and I have went to perhaps 5
generations now, I do not even use that designation anymore.
I have a cheap (but 200% professional!!!) TIG welding shop here that can
weld anything but the "crack of dawn" and my portion would be reasonable
too, I'd retain rights to the design but the buyer would be getting it for
near cost. Just a thought, but it would have to be later, like summer.
 
Chris Walker said:
Yeah...It sounds pretty good. I actually have a set of these heads already. Course now I have to get new headers...I HATE FORD ENGINEERS...If we could have just had them pull their heads out of their @$$ before they put the final touches on these heads back in 83.

Chris
Click to expand...

Why new headers???

Your SC set should fit fine!!!
I've had dozens of these and single ports, they all are basiclaly the same heads.
The only differences are the intake sides.
 
I guess I should look again at mine... I thought they were a round exhaust port like the 4.6.

I see you have sparked the intrest of Dave N. Last I heard he had specially made intake gaskets for his cause they were soo big. If he is planning on a SPI swap then it would probably be a good idea. His car makes more HP then mine so if he is going to up then it would probably be a worthwhile upgrad for all of us over the 300 mark. Also I think the drivability will go up with the SPI heads as well, not that the single is bad but to flow that much better with a similar (I believe) size valve...Hmmmmm the possibilities of 400 dont seem that far away.

Chris
 
Chris Walker said:
I guess I should look again at mine... I thought they were a round exhaust port like the 4.6.
Click to expand...

The port is small and round, I guess you could say it is like a 4.6,
but the bolt pattern is the same and the headers will bolt up.
The problem here is the header tube size is TOO BIG and you lose
velocity right after the port exit.


Chris Walker said:
I see you have sparked the intrest of Dave N. Last I heard he had specially made intake gaskets for his cause they were soo big. If he is planning on a SPI swap then it would probably be a good idea. His car makes more HP then mine so if he is going to up then it would probably be a worthwhile upgrad for all of us over the 300 mark. Also I think the drivability will go up with the SPI heads as well, not that the single is bad but to flow that much better with a similar (I believe) size valve...Hmmmmm the possibilities of 400 dont seem that far away.
Click to expand...

Yeah, the stock intake/head gaskets for SC need to be a bit bigger
for hi-flow applications, I'm exploring some options.

IMO too many setups spin the Eaton too fast, and with the new BH springs
the blower speed can peak later, like at 6500 or so, and the SC cars will
be faster thru using more RPM and having less parasitic losses. SPI heads
will just work that much better with these overall changes, they really
shine with the higher RPM applications. My little old 207 cammed SPI's
are out-powering the competition's stuff that has bigger cams :D THey
typically have spent much more on the entire combo as well!
 
Yeah...the port size was what I was talking about. That still does not answer my question about the port length.

Since we are on the subject of cams, what kind of things do you do for the 4.6 as far as cams AND porting?

Chris
 
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