Intake Spacer Clearance?

skinemann96 · Oct 3, 2009

I am currently figuring out and purchasing a H/C/I combo and have a few questions about what works well together.

I currently have a 95 cobra upper and lower intake that is getting ported and polished

Before:

After:

I have read mixed reviews on here about phenolic spacers and if they actually help or really do anything at all. If i go with a spacer what is the biggest i can fit with a stock hood and brace? Seems 3/8 is a popular size. I would assume i also would need longer intake bolts and egr tube as well?

Also i am torn on what heads would be best. I am thinking of the Edel RPM #60229 with either #7122 or #2221 cam.

That being said is the stock fuel pump and injector/MAS ok with this set up?

Thanks in Advance!!

final5-0 · Oct 3, 2009

Most use a spacer to put the upper a bit higher to clear the vc's

As if they make more power .............
I can't say for certain but if so ... I'd think it would be very small

I have no experience with em as my Edel did not need one

About those heads

I've seen good power made from any of the big three and the
difference in the results between them is nothing to be concerned
about from what I've seen in all the posted charts

I don't think I've seen any dyno charts where Edel cams have
been used so I'd have no idea about them

NO

The OEM fuel system is not able to feed those mods :Word:

You will need a larger intank pump like a 190 or 255

You will need at least 24# inj's
and
You might need an afpr to run em at elevated pressure

I run 30's myself but I self tune and run em at OEM pressure

The little OEM meter will be pegged or very close to being pegged
with the additional airflow that combo is gonna generate therefore
you're gonna have to upgrade

Here are a few aluminum head based h/c/i combo dyno pulls

Perhaps you can get some ideas with the data

Grady

revhead347 · Oct 3, 2009

Most of the entry level heads are all the same. The only one that has a distinct difference is the twisted wedge, which has the exhaust valve at a different angle. Anything else with a factory valve angle of 20 degrees and factory port locations is going to flow about the same. Buy based on what package you can get the heads. I'm kind of interested to see how well the new E-street heads from Edelbrock work. The sales pitch is that they are packaged really well to perform right out of the box. Most of the aftermarket heads need a little machine work to get the most out of them.

Kurt

skinemann96 · Oct 3, 2009

Yea i had a feeling i would need to bump up the fuel with adding so much air. As far as the edelbrock heads go seems they are the biggest i can run with the current clearance i have with stock internals. The largest intake i can run is a 1.90" correct? No on has answered about clearing the stock hood with a spacer or not.. Summit has a .5" spacer kit with bolts for the GT-40 that i was going to get if it cleared the hood. i just picked the edel cam due to having a hook up on edel products and them being matched to there heads..otherwise i would go with trickflow twisted wedges. If not a edel cam what would u guys think would be good with that set up? I dont mind an aggressive cam since the car is going to be mostly a weekend nice weather and track use only from now on. F303?

Thanx

frcefedlx · Oct 3, 2009

The twisted wedges have a 2.02" intake valve and because of the valve location work with stock pistons, I believe the only 2.02" head that will work. I run a 1\2" spacer with my combo under the stock hood but I use a Track heat intake manifold and took out the hood insulation. Keep in mind the egr tube will not reach with a spacer unless you get the adaptor or just get rid of it altogether.

revhead347 · Oct 3, 2009

I think the Twisted Wedge heads offer more performance because of the valve locations. Stay away from the letter cams, which are generally referred to as noise cams. They make the car sound nice, but do nothing for performance.

Kurt

skinemann96 · Oct 5, 2009

revhead347 said:
I think the Twisted Wedge heads offer more performance because of the valve locations. Stay away from the letter cams, which are generally referred to as noise cams. They make the car sound nice, but do nothing for performance.

Kurt

If i didnt have a budget I would go twisted all the way but i can not pass up the deal on the edelbrocks. As far as the letter cams those are the Ford Racing ones? If so it seems the e303 is pretty popular on here?

revhead347 · Oct 5, 2009

The Edelbrock heads are pretty good too, and I think they come well packaged. The letter cams are just expensive as the other off the shelf cams. I don't think too many people here are using letter cams. That's usually a newb mistake, because people aren't aware that there are other cams out there.

Kurt

skinemann96 · Oct 5, 2009

revhead347 said:
The Edelbrock heads are pretty good too, and I think they come well packaged. The letter cams are just expensive as the other off the shelf cams. I don't think too many people here are using letter cams. That's usually a newb mistake, because people aren't aware that there are other cams out there.

Kurt

Ah ok thanks Kurt.. the guy that works on my car with me said the same exact thing. What cams is good to go with then? Is the Edels i mentioned at first ok? Also a few have told me that the stock 19lb would be ok with a fuel pressure regulator and a tune?

revhead347 · Oct 5, 2009

Honestly, if you don't want to spend the extra money on a custom cam, I would get one of those packaged heads and cam. I'm sure the camshaft Edelbrock packages with the heads is decently well matched. If you want to try to squeeze the max out of it, call a large camshaft manufacturer that has a lot of grinds. We could go on and on about what camshaft is the best, but I'm not exactly a camshaft expert. Comp Cams has one of the largest selections, and their tech guys are pretty good too. If you call them up and tell them what you have, and what you want, they will figure out what you need. Then you will be talking to a camshaft expert.

Kurt

BlackVert · Oct 6, 2009

i'm still confused why you think you want a spacer?

GTA_V6_Mustang · Oct 6, 2009

Thread link to what I made on a full edelbrock set-up. For Final5-0 who said hes never seen a dyno chart with an edelbrock cam.

http://www.stangnet.com/mustang-forums/797219-got-car-dynod-today.html

GTA_V6_Mustang · Oct 6, 2009

And the phenolic spacer other than offering better V/C clearance is there to isolate the upper from the lower to reduce heat in the intake track. And I for once can vouch it works. When driving the motor can be nice and hot and you can touch the upper intake and its barely even warm. The 3/8 spacer is supposed to be the largest you can use before having clearance issues.

skinemann96 · Oct 6, 2009

BlackVert said:
i'm still confused why you think you want a spacer?

I wouldnt say i WANT to add a spacer.. Like i said before some say it helps a little others say it does nothing at all. I figure if it may do anything at all and fit and adding it wouldnt hurt anything why not?

GTA_V6_Mustang said:
And the phenolic spacer other than offering better V/C clearance is there to isolate the upper from the lower to reduce heat in the intake track. And I for once can vouch it works. When driving the motor can be nice and hot and you can touch the upper intake and its barely even warm. The 3/8 spacer is supposed to be the largest you can use before having clearance issues.

Thanks GTA!

skinemann96 · Oct 12, 2009

Well i ordered a .5" GT40 spacer kit made by ford racing that also included the Intake bolts needed with it. Well.. you would think that a kit that has a .5" spacer and the bolts thet they would be .5" longer right? Nope. After checking the length they are not long enough. I dont know what they were thinking putting stock bolt lengths in a package with a .5" spacer. So i did not end up using the spacer.

I was amazed after taking off the stock GT TB and manifold. Wow they are just junk lol. Manifold is just tiny!! Even though the OEM Tb is 65mm the butterfly is about HALF that.

Anyways i decided on holding off on the H/C/I since there where far more parts and cost then I originally anticipated. (Rocker Arms, Push Rods, Valve Covers, ect..) Here is the reassemble so far...

final5-0 · Oct 13, 2009

skinemann96 said:
Ah ok thanks Kurt.. the guy that works on my car with me said the same exact thing. What cams is good to go with then? Is the Edels i mentioned at first ok? Also a few have told me that the stock 19lb would be ok with a fuel pressure regulator and a tune?

I just can't go along with that thinking
unless
You were to run those tiny 19's at a VERY elevated pressure
and then
You'd be driving them so much ... Who knows what you would have

Consider the Cobra ... Ford saw fit to send em out with 24's
and
You are gonna be pushin more power than it does

anyway ... lets move on to the next line of thought

19's AND a tune

Kinda like saying mix oil and water

If one was gonna do a tune
then
Why keep the little 19's
when
You could be safe with 24's
and
The guy would be able to tune for any issues that might arise
with the larger inj's and aftermarket meter

I mean ... you are gonna pay for the tune anyway

Pay and be safe all at the same time :Word:
NOT
Pay and take a chance of not having enough fuel

I just don't wanna N O T have enough fuel

Lean is mean
but
Too lean breaks stuff

Just a thought or two as I see it

Grady

Intake Spacer Clearance?

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