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01-20-2003, 01:40 AM
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Senior Club Cobra Member
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Join Date: Mar 2001
Location: Seattle, WA,
Posts: 1,389
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Not Ranked
is this manifold stock?
Hi all
I finaly got a day free to rebuild my carbs and when i peeled them off i was a little surprised at the manifold interior. (no i dont mean the caramel fuel coating the whole thing, or the 1/2" of fuel sitting in the bottem)is it oem stock or ford after market?
PICTURE IN MY GALLERY (cant quite sqeeze it in here)
please also take a stab at why my carbs would emty themselves out in the manifold after sitting a few days.
thanks as always Karl
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01-20-2003, 07:53 AM
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CC Member
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Join Date: Apr 1999
Location: cleveland,
OH
Cobra Make, Engine: CSX4000, 427
Posts: 1,999
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Not Ranked
Looks like an oem stock. If it has a casting number such as c6ae or something like that, then it definitely is a ford piece.
__________________
"After jumping into an early lead, Miles pitted for no reason. He let the entire field go by before re-entering the race. The crowd was jumping up and down as he stunned the Chevrolet drivers by easily passing the entire field to finish second behind MacDonald's other team Cobra. The Corvette people were completely demoralized."
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01-20-2003, 09:05 AM
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CC Member
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Join Date: May 2000
Location: Sauk Centre,
MN
Cobra Make, Engine: Owner, Classic Roadsters II
Posts: 1,347
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Not Ranked
Usually about the only thing that will allow the gas to seep out is a bad power valve. Other than that if there is a crack or porosity problem. I would bet on the power valve.
Don
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01-20-2003, 05:20 PM
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CC Member
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Join Date: Jan 2002
Location: Northern California,
CA
Cobra Make, Engine: -Sold- Contemporary 427S/C # CCX-3152 1966 427 Med Rise Side Oiler, 8v 3.54:1 Salisbury IRS, Koni's.. (Now I'm riding Harleys)
Posts: 2,567
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Not Ranked
427 low rise..
It appears to be a C3AE-9425 A 427 low rise unit used from 63-65
Little dirty though.. Definately an over rich condition inside and out.
__________________
michael
A man that is young in years, may be old in hours, if he have lost no time. But that happeneth rarely. Generally, youth is like the first cogitations, not so wise as the second. For there is a youth in thoughts, as well as in ages... Sir Francis Bacon (1561-1626)
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01-20-2003, 10:43 PM
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Senior Club Cobra Member
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Join Date: Mar 2001
Location: Seattle, WA,
Posts: 1,389
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Not Ranked
Scobrac,
Thats just it ! Icant find a casting # on that thing,
How did you arrive at that #
where am i not looking ?
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01-21-2003, 01:05 AM
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Club Cobra Member
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Join Date: Mar 2001
Location: Southern,
NJ
Cobra Make, Engine: CSX4300, C5AE-H, Toploader
Posts: 695
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Not Ranked
Hi Karl,
The Ford number would be on the number one runner. I can see the Fomoco Oval under the fuel rail. From what I hear not all had a number. Somebody can correct me if I'm wrong here. I have one sitting in front of me and it looks like a twin.
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01-21-2003, 09:44 AM
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Senior Club Cobra Member
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Join Date: Mar 2001
Location: Seattle, WA,
Posts: 1,389
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Not Ranked
Sal...............
Is yours a low rise or mid rise ?
Karl
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01-21-2003, 11:25 AM
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Club Cobra Member
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Join Date: Mar 2001
Location: Southern,
NJ
Cobra Make, Engine: CSX4300, C5AE-H, Toploader
Posts: 695
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Not Ranked
It's a low riser C3AE-9425-K. Karl check your head numbers. Post your numbers and I will tell you what you have.They are in between the spark plug holes on the head.
Last edited by Sal Gerace; 01-21-2003 at 07:34 PM..
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01-21-2003, 07:16 PM
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Senior Club Cobra Member
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Join Date: Mar 2001
Location: Seattle, WA,
Posts: 1,389
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Not Ranked
Sal, casting 3 on head-c5aef== mid rise?
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01-21-2003, 07:47 PM
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Club Cobra Member
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Join Date: Mar 2001
Location: Southern,
NJ
Cobra Make, Engine: CSX4300, C5AE-H, Toploader
Posts: 695
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Not Ranked
Your heads are medium risers. Email me and I'll send you a part numbers list that I have. I guess the heads and intake are compatable but I would like to hear from others on this.
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01-21-2003, 08:44 PM
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CC Member
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Join Date: Jul 2002
Location: Portland, OR area,
OR
Cobra Make, Engine: Contemporary CCX33868 Sold. Just "playin' the boards now."
Posts: 634
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Not Ranked
A funny thing happened on the way to performance.
When Ford went to the Med riser, several things changed from the old low riser. The one you can't see with the intake on the engine is the port height. The ports are actually bigger on the low riser....at least visually. What changed on Med Riser is the floor of the port was raised about 1/4-3/8" to increase air flow. Same thing as "D porting" did for Chev heads. It is not a good idea to use a low riser manifold on med riser heads for this reason.
The mis match at the bottom of the port will create turbulence and disturb proper air flow. In short, it will steal power and give the owner fits trying to sort out why the engine falls on its nose at mid to upper rpm. Yes, the engine will run.....just not right.
Al
__________________
"If some is good, more is better.
And too much is just enough."
--Carroll Shelby
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01-21-2003, 09:12 PM
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Senior Club Cobra Member
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Join Date: Mar 2001
Location: Seattle, WA,
Posts: 1,389
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Not Ranked
Guys ,Guys,Guys........................... are you really telling me this is a low riser???????????????/  |
01-21-2003, 09:19 PM
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Senior Club Cobra Member
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Join Date: Mar 2001
Location: Seattle, WA,
Posts: 1,389
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Not Ranked
another look;
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01-21-2003, 09:50 PM
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Club Cobra Member
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Join Date: Mar 2001
Location: Southern,
NJ
Cobra Make, Engine: CSX4300, C5AE-H, Toploader
Posts: 695
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Not Ranked
Like this
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01-21-2003, 09:56 PM
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Club Cobra Member
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Join Date: Mar 2001
Location: Southern,
NJ
Cobra Make, Engine: CSX4300, C5AE-H, Toploader
Posts: 695
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Not Ranked
Numbers here could end in J or K or no numbers
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01-21-2003, 09:57 PM
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Club Cobra Member
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Join Date: Mar 2001
Location: Southern,
NJ
Cobra Make, Engine: CSX4300, C5AE-H, Toploader
Posts: 695
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Not Ranked
one more
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01-21-2003, 10:05 PM
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Senior Club Cobra Member
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Join Date: Mar 2001
Location: Seattle, WA,
Posts: 1,389
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Not Ranked
Sure looks like a dead ringer (cept it clean) but im sure ive been told low rise and med rise have very different mating angles.
also this engine sure dosnt stumble, the only thing stopping the revs is my fear of blowing it up.
Karl
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01-21-2003, 10:10 PM
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Club Cobra Member
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Join Date: Mar 2001
Location: Southern,
NJ
Cobra Make, Engine: CSX4300, C5AE-H, Toploader
Posts: 695
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Not Ranked
Karl look on the bright side. You could buy a new Blue Thunder from Carl's Ford Parts for $575.00.  Carls Ford Parts |
01-21-2003, 10:23 PM
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Senior Club Cobra Member
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Join Date: Mar 2001
Location: Seattle, WA,
Posts: 1,389
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Not Ranked
Sal,
and you are sure you're holding a low riser?
positive?
i think you are because i dont think there was a mid rise in 63
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01-21-2003, 11:19 PM
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Club Cobra Member
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Join Date: Mar 2001
Location: Southern,
NJ
Cobra Make, Engine: CSX4300, C5AE-H, Toploader
Posts: 695
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Not Ranked
From what I see I would certainly say that I have a low riser. A medium riser runners are opposite the high low staggering than a low riser. While going over my books I come to realize that the Tri-Power(2x3) setup on my 390 Mustang is not a good match neither. Sometimes after a hard run the garage reeks of fuel?? Karl I think you opened up my eyes here!! I guess the Tri-Power setups were for the early 390's that did not have the GT heads! HMMMM anybody out there.......HELP!
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