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  Hey Alex: On the C90X-B intake...

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Author Topic:   Hey Alex: On the C90X-B intake...
Ryan Wilke
Gearhead

Posts: 3237
From: Stanton, Michigan, zip 48888
Registered: Oct 2000

posted 02-24-2003 07:51 PM     Click Here to See the Profile for Ryan Wilke        Reply w/Quote
Some time ago, I recall you mentioning that although it was a 60's piece, you liked the C90X-B intake and thought it was 'a top shelf piece for making even power' among the dual-plane manifolds.

Where would you rank it with the newer Performer RPM and the Stealth?

Thanks once again for your expert advice,
Ryan

[This message has been edited by Ryan Wilke (edited 02-25-2003).]

Moneymaker
Administrator

Posts: 29200
From: Lyons, IL, USA
Registered: May 99

posted 02-24-2003 10:20 PM     Click Here to See the Profile for Moneymaker        Reply w/Quote
#1 C90X
#2 Edelbrock
Weiand............leave it on the shelf as a place to store AFB carbs.

heh heh heh,

------------------
Alex Denysenko
Co-Administrator and Moderator

NHRA/IHRA/SRA member and licensed Superstock driver
MCA member# 53321
NHRA and IHRA SS/LA National Record Holder '00,'01,'02,&'03
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28
Professional Manwhore
The Barry of BarrysGrrl

Quote #1: "I never met a magazine mechanic I liked."
Quote #2: "Make sure brain is in gear before engaging mouth!"
Quote #3: "If you can't run with the big dogs, stay on the porch!"
www.moneymakerracing.com

V8 Thumper
Gearhead

Posts: 4777
From: Phoenix, Arizona
Registered: Dec 2001

posted 02-25-2003 11:53 AM     Click Here to See the Profile for V8 Thumper        Reply w/Quote
Do these C90X intakes ever show up on Ebay? How much do they fetch?

psst... hey Alex... got any intakes?

------------------
1965 GT coupe, 333ci aluminum headed/solid cammed stroker, four speed, 3.70:1 9"

All Blue Oval, no blue bottle
http://mustangsandmore.50megs.com/V8Thumper.html

Moneymaker
Administrator

Posts: 29200
From: Lyons, IL, USA
Registered: May 99

posted 02-25-2003 12:03 PM     Click Here to See the Profile for Moneymaker        Reply w/Quote
They are on E-bay regularly.
My last one brought $250 on E-bay I think Todd.
I have one left and I'm saving it for a "project".

------------------
Alex Denysenko
Co-Administrator and Moderator

NHRA/IHRA/SRA member and licensed Superstock driver
MCA member# 53321
NHRA and IHRA SS/LA National Record Holder '00,'01,'02,&'03
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28
Professional Manwhore
The Barry of BarrysGrrl

Quote #1: "I never met a magazine mechanic I liked."
Quote #2: "Make sure brain is in gear before engaging mouth!"
Quote #3: "If you can't run with the big dogs, stay on the porch!"
www.moneymakerracing.com

Daniel Jones
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Posts: 972
From: St. Louis, MO
Registered: Aug 99

posted 02-25-2003 01:53 PM     Click Here to See the Profile for Daniel Jones        Reply w/Quote
Be aware there were several versions of the C90X (including repros).
The real ones had large FORD letters or a blank pad. The repos say FORD,
COBRA, or even COUGAR. The real C90X is taller and has larger runners.
There should also be 4 small numbers stamped underneath. Alex, do you
remember that code (OE something or other)? If not, I can check tonight.

Dan Jones

Ryan Wilke
Gearhead

Posts: 3237
From: Stanton, Michigan, zip 48888
Registered: Oct 2000

posted 02-25-2003 02:09 PM     Click Here to See the Profile for Ryan Wilke        Reply w/Quote
Dan,
Would you take a look and see what yours is stamped please?

Also, when you said large FORD letters, how large? Would you measure yours please?

Thanks!
Ryan

bifs66
Gearhead

Posts: 313
From: Maryland
Registered: Apr 2000

posted 02-25-2003 02:40 PM     Click Here to See the Profile for bifs66        Reply w/Quote
Interesting info on the C9OX manifold. The one sitting in the basement has no "FORD" letters, but has "9/29/69" on the thermostat housing and "Buddy Bar" underneath the valley area. Any info on this one? Back in 71, I also had a C9OZ-9424-E ($83) manifold on a 351W that looked very similar, if not the same; and it had the "F O R D" in front of the craburetor pad.

------------------
Bernie Frank
66 Fastback restomod project
85 GT (preserved)
82 GT (original)

Moneymaker
Administrator

Posts: 29200
From: Lyons, IL, USA
Registered: May 99

posted 02-25-2003 03:48 PM     Click Here to See the Profile for Moneymaker        Reply w/Quote
quote:
Originally posted by Daniel Jones:
Be aware there were several versions of the C90X (including repros).
The real ones had large FORD letters or a blank pad. The repos say FORD,
COBRA, or even COUGAR. The real C90X is taller and has larger runners.
There should also be 4 small numbers stamped underneath. Alex, do you
remember that code (OE something or other)? If not, I can check tonight.

Dan Jones


OecO.

------------------
Alex Denysenko
Co-Administrator and Moderator

NHRA/IHRA/SRA member and licensed Superstock driver
MCA member# 53321
NHRA and IHRA SS/LA National Record Holder '00,'01,'02,&'03
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28
Professional Manwhore
The Barry of BarrysGrrl

Quote #1: "I never met a magazine mechanic I liked."
Quote #2: "Make sure brain is in gear before engaging mouth!"
Quote #3: "If you can't run with the big dogs, stay on the porch!"
www.moneymakerracing.com

Ryan Wilke
Gearhead

Posts: 3237
From: Stanton, Michigan, zip 48888
Registered: Oct 2000

posted 02-25-2003 04:34 PM     Click Here to See the Profile for Ryan Wilke        Reply w/Quote
It's my understanding that these manifolds were produced for the now obsolete "Ford Power Parts" Program of the 60's/70's. The manifolds that were cast as C90X-9424-B were for 289/302s and those cast as C90X-9424-A were for 351W blocks.

If I had to guess I'd say the manifold that has no "FORD" letters, but has "9/29/69" on the thermostat housing and "Buddy Bar" underneath the valley area, may be one of the "reproduction" of 'copy' manifolds that Dan was referring to earlier.

I'd guess the C9OZ-9424-E manifold from a 351W that looked very similar, if not the same; and it had the "F O R D" in front of the carburetor pad would be a OEM '69 351W -4V manifold? -- Is the C90Z-E an aluminum manifold?

Alex, can you confirm or shed some additional light on what Bernie said earlier?

Thanks!
Ryan

mustangboy
Gearhead

Posts: 1343
From: Ont, Canada
Registered: Mar 2002

posted 02-25-2003 05:38 PM     Click Here to See the Profile for mustangboy        Reply w/Quote
Alex I have one of these intakes that I was going to put on my sisters car.It won't be raced I just wanted that "period correct" sort of look for the car.Now I'm wondering if its too good to put on a "show" and nice weather driver car.I have a Weiand Xcellerator(single plane) on my car and I was wondering if this ancient peice would actually be better?

------------------
1968 mustang j-code [email protected] 306cu.in, stock ported heads,weiand exellerator,650 holley DP,hedman hedders,comp 292 Magnum cam,4-speed,8 inch 4.11 detroit locker

Moneymaker
Administrator

Posts: 29200
From: Lyons, IL, USA
Registered: May 99

posted 02-25-2003 08:32 PM     Click Here to See the Profile for Moneymaker        Reply w/Quote
quote:
Originally posted by Ryan Wilke:
It's my understanding that these manifolds were produced for the now obsolete "Ford Power Parts" Program of the 60's/70's. The manifolds that were cast as C90X-9424-B were for 289/302s and those cast as C90X-9424-A were for 351W blocks.

If I had to guess I'd say the manifold that has no "FORD" letters, but has "9/29/69" on the thermostat housing and "Buddy Bar" underneath the valley area, may be one of the "reproduction" of 'copy' manifolds that Dan was referring to earlier.

I'd guess the C9OZ-9424-E manifold from a 351W that looked very similar, if not the same; and it had the "F O R D" in front of the carburetor pad would be a OEM '69 351W -4V manifold? -- Is the C90Z-E an aluminum manifold?

Alex, can you confirm or shed some additional light on what Bernie said earlier?

Thanks!
Ryan


Both the 351 and 289 intakes had the FORD block letters. The only deviations were the 69-70 Shelby GT-350 factory equiment versions that had the SHELBY letters.
No FORD on the 289 intake = no C90X.
What everyone keeps forgetting is that the intended purpose of the C90X was for the 351 head conversion on a 289. It was first offered int he 1969 Muscle Parts cataloge of which I have an original, intact copy.

------------------
Alex Denysenko
Co-Administrator and Moderator

NHRA/IHRA/SRA member and licensed Superstock driver
MCA member# 53321
NHRA and IHRA SS/LA National Record Holder '00,'01,'02,&'03
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28
Professional Manwhore
The Barry of BarrysGrrl

Quote #1: "I never met a magazine mechanic I liked."
Quote #2: "Make sure brain is in gear before engaging mouth!"
Quote #3: "If you can't run with the big dogs, stay on the porch!"
www.moneymakerracing.com

Moneymaker
Administrator

Posts: 29200
From: Lyons, IL, USA
Registered: May 99

posted 02-25-2003 08:34 PM     Click Here to See the Profile for Moneymaker        Reply w/Quote
quote:
Originally posted by mustangboy:
Alex I have one of these intakes that I was going to put on my sisters car.It won't be raced I just wanted that "period correct" sort of look for the car.Now I'm wondering if its too good to put on a "show" and nice weather driver car.I have a Weiand Xcellerator(single plane) on my car and I was wondering if this ancient peice would actually be better?


The C90X will perform better all around with a mild cam and a 650-700 CFM 4150 Holley.
It will our perform a stock Weiand intake.

------------------
Alex Denysenko
Co-Administrator and Moderator

NHRA/IHRA/SRA member and licensed Superstock driver
MCA member# 53321
NHRA and IHRA SS/LA National Record Holder '00,'01,'02,&'03
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28
Professional Manwhore
The Barry of BarrysGrrl

Quote #1: "I never met a magazine mechanic I liked."
Quote #2: "Make sure brain is in gear before engaging mouth!"
Quote #3: "If you can't run with the big dogs, stay on the porch!"
www.moneymakerracing.com

Ryan Wilke
Gearhead

Posts: 3237
From: Stanton, Michigan, zip 48888
Registered: Oct 2000

posted 02-26-2003 07:39 AM     Click Here to See the Profile for Ryan Wilke        Reply w/Quote
quote:
Originally posted by mustangboy:
...I have a Weiand Xcellerator(single plane) on my car and I was wondering if this ancient peice would actually be better?

Mustangboy:
Before you put it on your sister's car, you may want to TRY IT OUT on your car, (sounds like maybe your car has more 'go fast' equip on it than hers, so would be better suited for it). It's only a set of intake gaskets! I'd dare say you may "enjoy it" more than she would!

However, If you do make the switch, I wouldn't put the single-plane Weiand on your sister's driver car.... I'd try to locate a OEM 4-barrel manifold or a used Edelbrock Performer manifold. The single-plane would be tuff on her mileage....

Ryan

Ryan Wilke
Gearhead

Posts: 3237
From: Stanton, Michigan, zip 48888
Registered: Oct 2000

posted 02-26-2003 07:50 AM     Click Here to See the Profile for Ryan Wilke        Reply w/Quote
quote:
Originally posted by Moneymaker:
The only deviations were the 69-70 Shelby GT-350 factory equiment versions that had the SHELBY letters.

Alex,
I had a "SHELBY"-lettered manifold with the casting #: SFJK-9434C. Would that be the same one you're referring to above?

Have you ever heard of any repo's of the SHELBY manifolds out there?

Ryan

Moneymaker
Administrator

Posts: 29200
From: Lyons, IL, USA
Registered: May 99

posted 02-26-2003 11:04 AM     Click Here to See the Profile for Moneymaker        Reply w/Quote
Yes Ryan, I do believe that Branda markets a Shelby repop.
Ford Power Parts used to market an entire series of FoMoCo repops. I do not know if they still do.

------------------
Alex Denysenko
Co-Administrator and Moderator

NHRA/IHRA/SRA member and licensed Superstock driver
MCA member# 53321
NHRA and IHRA SS/LA National Record Holder '00,'01,'02,&'03
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28
Professional Manwhore
The Barry of BarrysGrrl

Quote #1: "I never met a magazine mechanic I liked."
Quote #2: "Make sure brain is in gear before engaging mouth!"
Quote #3: "If you can't run with the big dogs, stay on the porch!"
www.moneymakerracing.com

Ryan Wilke
Gearhead

Posts: 3237
From: Stanton, Michigan, zip 48888
Registered: Oct 2000

posted 02-26-2003 12:22 PM     Click Here to See the Profile for Ryan Wilke        Reply w/Quote

-- Is there any way to tell them apart from the real deal???

Moneymaker
Administrator

Posts: 29200
From: Lyons, IL, USA
Registered: May 99

posted 02-26-2003 12:30 PM     Click Here to See the Profile for Moneymaker        Reply w/Quote
OeCo on the bottom are originals.

------------------
Alex Denysenko
Co-Administrator and Moderator

NHRA/IHRA/SRA member and licensed Superstock driver
MCA member# 53321
NHRA and IHRA SS/LA National Record Holder '00,'01,'02,&'03
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28
Professional Manwhore
The Barry of BarrysGrrl

Quote #1: "I never met a magazine mechanic I liked."
Quote #2: "Make sure brain is in gear before engaging mouth!"
Quote #3: "If you can't run with the big dogs, stay on the porch!"
www.moneymakerracing.com

Daniel Jones
Gearhead

Posts: 972
From: St. Louis, MO
Registered: Aug 99

posted 02-27-2003 12:37 PM     Click Here to See the Profile for Daniel Jones        Reply w/Quote
> No FORD on the 289 intake = no C90X.
> OeCo on the bottom are originals.

Mine doesn't have the FORD lettering but does have the OeCo lettering on the bottom, along with the cast-in C90X part number.

Dan Jones

Moneymaker
Administrator

Posts: 29200
From: Lyons, IL, USA
Registered: May 99

posted 02-27-2003 01:43 PM     Click Here to See the Profile for Moneymaker        Reply w/Quote
quote:
Originally posted by Daniel Jones:
> No FORD on the 289 intake = no C90X.
> OeCo on the bottom are originals.

Mine doesn't have the FORD lettering but does have the OeCo lettering on the bottom, along with the cast-in C90X part number.

Dan Jones



Over the years, we have all learned that when it comes to FoMoCo performance stuff ANYTHING is possible.
I have had at one time or another over 100 C90X intakes (no exaggeration).
I purchased 60 of them at one crack from the scrap dealer when they were obsoleted circa 1975 I think. Sold most of them for $75 each and thought I made a killing.
EVERY LEGITIMATE ONE (taller and larger runners) that I have seen or owned had the F O R D block letters. All of the knock offs or re-pops had everything from COUGAR to GT289 cast into them. None had the OeCo though, but.......as I said earlier.........

------------------
Alex Denysenko
Co-Administrator and Moderator

NHRA/IHRA/SRA member and licensed Superstock driver
MCA member# 53321
NHRA and IHRA SS/LA National Record Holder '00,'01,'02,&'03
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28
Professional Manwhore
The Barry of BarrysGrrl

Quote #1: "I never met a magazine mechanic I liked."
Quote #2: "Make sure brain is in gear before engaging mouth!"
Quote #3: "If you can't run with the big dogs, stay on the porch!"
www.moneymakerracing.com

bluestreek
Gearhead

Posts: 1724
From: Athens,GA
Registered: Jul 2001

posted 02-27-2003 02:43 PM     Click Here to See the Profile for bluestreek        Reply w/Quote
Is this one of the C90X knock-offs? It used to have 4 holes before it was doctored.

XXXXooXXXX
XXXXooXXXX
------------------
1966 Mustang Coupe: Custom glass hood and BIG scoop sits atop a 289 stroked to 331 c.i., Steel crank and girdle, 5.4 H-beams, Forged slugs, ported TFS alum. heads, ported Stealth 8020 intake, CompCams Xtreme Solid Roller, Holley 750 HP, long tubes, 4speed, 9" 3.50 posi, BFG Drag radials..

[This message has been edited by bluestreek (edited 03-19-2003).]

Moneymaker
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Posts: 29200
From: Lyons, IL, USA
Registered: May 99

posted 02-27-2003 03:28 PM     Click Here to See the Profile for Moneymaker        Reply w/Quote
Not even close.

C90X had two oval holes, not four.

------------------
Alex Denysenko
Co-Administrator and Moderator

NHRA/IHRA/SRA member and licensed Superstock driver
MCA member# 53321
NHRA and IHRA SS/LA National Record Holder '00,'01,'02,&'03
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28
Professional Manwhore
The Barry of BarrysGrrl

Quote #1: "I never met a magazine mechanic I liked."
Quote #2: "Make sure brain is in gear before engaging mouth!"
Quote #3: "If you can't run with the big dogs, stay on the porch!"
www.moneymakerracing.com

mustangboy
Gearhead

Posts: 1343
From: Ont, Canada
Registered: Mar 2002

posted 02-27-2003 06:46 PM     Click Here to See the Profile for mustangboy        Reply w/Quote
Hey thanks for that picture Bluestreek.My brother used to run one of those intakes on his 65 coupe.Thats the first time I have ever actually seen one though(My brother is 13 years older than me )

Ryan Wilke
Gearhead

Posts: 3237
From: Stanton, Michigan, zip 48888
Registered: Oct 2000

posted 02-28-2003 12:56 PM     Click Here to See the Profile for Ryan Wilke        Reply w/Quote
quote:
Originally posted by Daniel Jones:
Mine....does have the OeCo lettering on the bottom, along with the cast-in C90X part number. [/B]

Hey Dan,
Does your C90X manifold have the "OeCo" cast into the bottom (like the 'C90X-9424-B' is on top), or are the "OeCo" letters metal-stamped into the bottom?

- if they're metal stamped in, maybe somebody added the letters later.. ?

Thanks, Ryan

Daniel Jones
Gearhead

Posts: 972
From: St. Louis, MO
Registered: Aug 99

posted 02-28-2003 02:09 PM     Click Here to See the Profile for Daniel Jones        Reply w/Quote
I'll double check tonight but I believe they are stamped in. I remember they were exactly as Alex described they should be and that the repos I looked at did not have them. I don't remember the exact port size but I thought they were larger than 289 ports but not quite as large as my DOOE 351W head ports but I may have that confused with the J302's that I had at the time. Alex, do you recall the C90X port dimensions?

Dan Jones

Ryan Wilke
Gearhead

Posts: 3237
From: Stanton, Michigan, zip 48888
Registered: Oct 2000

posted 03-06-2003 12:37 PM     Click Here to See the Profile for Ryan Wilke        Reply w/Quote
Hi Guys,,,, I believe Spring & the race season is approaching!!!


Dan Jones:
Have you been able to take a look at your intake and see if the 'OeCo' was stamped or cast yet?

Alex:
Have you been able to dig out your C90X-B intake and measure the dimensions of the intake ports?

The reason I'm asking is because I'd like to confirm that my C90X-B is a OE piece or a reproduction.... ..so I hope you guys can get back with me.

Thanks again!!!
Ryan

Daniel Jones
Gearhead

Posts: 972
From: St. Louis, MO
Registered: Aug 99

posted 03-09-2003 03:34 PM     Click Here to See the Profile for Daniel Jones        Reply w/Quote
Ryan,

The 'OeCo' is stamped in, using very small letters. The C90X part number is cast-in.

Dan Jones

Ryan Wilke
Gearhead

Posts: 3237
From: Stanton, Michigan, zip 48888
Registered: Oct 2000

posted 03-10-2003 12:49 PM     Click Here to See the Profile for Ryan Wilke        Reply w/Quote
quote:
Originally posted by Daniel Jones:
...The 'OeCo' is stamped in, using very small letters....

Well: I DO have the FORD on the front casting block and the cast-in C90X-9424-B part #, however, I don't see any small letters stamped on the bottomside of mine.....unless they are located under the oil heat shield; I didn't remove it....yet.

Dan,
#1) Where on your intake underside are the letters 'OeCo' located & just how small (1/4, 1/8")are they?

#2) What are the dimensions of the ports on it?

...sorry to keep buggin' ya on this issue, but...I'd like to be sure of what I have or don't have.

Thanks again in advance, Ryan

[This message has been edited by Ryan Wilke (edited 03-11-2003).]

Ryan Wilke
Gearhead

Posts: 3237
From: Stanton, Michigan, zip 48888
Registered: Oct 2000

posted 03-11-2003 05:14 PM     Click Here to See the Profile for Ryan Wilke        Reply w/Quote
Yo, Dan:
Don't take your C90X intake back to the attic just yet!!

......."Hep me out, please"

Ryan

Daniel Jones
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Posts: 972
From: St. Louis, MO
Registered: Aug 99

posted 03-11-2003 06:36 PM     Click Here to See the Profile for Daniel Jones        Reply w/Quote
I'll check tonight... if I remember.

Dan

Daniel Jones
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Posts: 972
From: St. Louis, MO
Registered: Aug 99

posted 03-16-2003 09:58 PM     Click Here to See the Profile for Daniel Jones        Reply w/Quote
The letters are about an 1/8" tall, located on the bottom, near the back right at the lip of the flange.

Better late than never...
Dan Jones

Ryan Wilke
Gearhead

Posts: 3237
From: Stanton, Michigan, zip 48888
Registered: Oct 2000

posted 03-16-2003 10:53 PM     Click Here to See the Profile for Ryan Wilke        Reply w/Quote
Thanks, Dan, for sharing the 'OeCo' letter size & location info with me..... Looks like mine doesn't have them.

Never-the-less, can I still get it's port size (width X length) from you?

Thanks!
Ryan

Ryan Wilke
Gearhead

Posts: 3237
From: Stanton, Michigan, zip 48888
Registered: Oct 2000

posted 03-19-2003 08:30 AM     Click Here to See the Profile for Ryan Wilke        Reply w/Quote
Dan,
Thanks for sharing the 'OeCo' letter size & location info with me..... At first I didn't see them; but I went back and took a better look, & Shur' 'Nuff - there they are - BIG as life itself!!

-- The port opening dimensions on mine are 1.0" wide X 1.84" tall.... Dan, are your ports the same dimensions?

Does ANYONE have the port dimensions from their C90X-B "OeCo" intake?

Does ANYBODY know the port dimensions of an OEM 289/302 4V cast-iron intake?

Thanks!
Ryan

bluestreek
Gearhead

Posts: 1724
From: Athens,GA
Registered: Jul 2001

posted 03-19-2003 10:43 AM     Click Here to See the Profile for bluestreek        Reply w/Quote
Stock 289 intake 2V or 4V size is .90" X 1.80".

------------------
1966 Mustang Coupe: Custom glass hood and BIG scoop sits atop a 289 stroked to 331 c.i., Steel crank and girdle, 5.4 H-beams, Forged slugs, TFS alum. heads, ported Stealth 8020 intake, CompCams Xtreme Solid Roller, Holley 750 HP, long tubes, 4speed, 9" 3.50 posi.
e.t. 12.50 @ 112 mph

Ryan Wilke
Gearhead

Posts: 3237
From: Stanton, Michigan, zip 48888
Registered: Oct 2000

posted 03-19-2003 11:06 AM     Click Here to See the Profile for Ryan Wilke        Reply w/Quote
Thanks for the info on the OE intake, BlueStreek!

Although I was told that the ports on a C90X-B "OeCo" intake should be larger than OE 289/302 intakes, your OE port specs and my C90X-B specs are nearly the same.

I guess I shouldn't be surprised though - just as we all have come to realize, many things done by FoMoCo back then weren't 100% always done the same way in every case.

Ryan

bluestreek
Gearhead

Posts: 1724
From: Athens,GA
Registered: Jul 2001

posted 03-19-2003 12:11 PM     Click Here to See the Profile for bluestreek        Reply w/Quote
I think Ford and everyone else kept the 289 ports so small because there was no such thing as aftermarket heads back then and there was no sense to use larger ports until the 351W heads were introduced. Things have sure changed in the last few years though.

------------------
1966 Mustang Coupe: Custom glass hood and BIG scoop sits atop a 289 stroked to 331 c.i., Steel crank and girdle, 5.4 H-beams, Forged slugs, TFS alum. heads, ported Stealth 8020 intake, CompCams Xtreme Solid Roller, Holley 750 HP, long tubes, 4speed, 9" 3.50 posi.
e.t. 12.50 @ 112 mph

Ryan Wilke
Gearhead

Posts: 3237
From: Stanton, Michigan, zip 48888
Registered: Oct 2000

posted 03-19-2003 12:41 PM     Click Here to See the Profile for Ryan Wilke        Reply w/Quote
quote:
Originally posted by bluestreek:
I think Ford and everyone else kept the 289 ports so small because there was no such thing as aftermarket heads back then and there was no sense to use larger ports until the 351W heads were introduced. Things have sure changed in the last few years though.

"What everyone keeps forgetting is that the intended purpose of the C90X was for the 351 head conversion on a 289. It was first offered in the 1969 Muscle Parts cataloge..."
---------- Alex Denysenko

"...I don't remember the exact port size but I thought they were larger than 289 ports but not quite as large as my DOOE 351W head ports..."
---------- Dan Jones

Ryan

Moneymaker
Administrator

Posts: 29200
From: Lyons, IL, USA
Registered: May 99

posted 03-19-2003 02:55 PM     Click Here to See the Profile for Moneymaker        Reply w/Quote
Kit consisted of pop up pistons, 351W heads, GT-40 valves, 390 GT springs and retainers, and a C90X intake.

------------------
Alex Denysenko
Co-Administrator and Moderator

NHRA/IHRA/SRA member and licensed Superstock driver
MCA member# 53321
NHRA and IHRA SS/LA National Record Holder '00,'01,'02,&'03
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28
Professional Manwhore
The Barry of BarrysGrrl

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Ryan Wilke
Gearhead

Posts: 3237
From: Stanton, Michigan, zip 48888
Registered: Oct 2000

posted 03-19-2003 04:14 PM     Click Here to See the Profile for Ryan Wilke        Reply w/Quote
I think it's interesting to note that the SBF Edelbrock Torker II, Performer, Performer RPM, Performer Air-Gap, and even the Victor Jr intakes are cast with nearly the same port sizes as the OE manifold and the C90X intake. They seem to all range from 1.03-1.09" X 1.85-1.93".

Whereas another fairly popular SBF intake is the Weiand Stealth; which is claimed to have port dimensions of 1.40" X 1.87"; which are somewhat larger port dimensions than the range listed above....

This comparison indicates that port size is a fairly small factor when comparing different intakes...Instead: I suspect that runner volume & design as well as carb height & plenum volume are probably larger factors in determining the performance level of a particular intake.

Ryan

bluestreek
Gearhead

Posts: 1724
From: Athens,GA
Registered: Jul 2001

posted 03-19-2003 07:33 PM     Click Here to See the Profile for bluestreek        Reply w/Quote
quote:
Originally posted by Ryan Wilke:

Whereas another fairly popular SBF intake is the Weiand Stealth; which is claimed to have port dimensions of 1.40" X 1.87"; which are somewhat larger port dimensions than the range listed above....

Ryan


The Stealth 8020 is not quite that large at the head entry but they open up nicely like the Victor series. I needed a xtra large one for my ported TFS heads and I only had to port the roof and sides back just a little to get them to open up to 1.25" X 2.10". It was just what the doctor ordered to feed a healthy 331 stroker with a small roller cam. Probably too fat for a little 289 though.

------------------
1966 Mustang Coupe: Custom glass hood and BIG scoop sits atop a 289 stroked to 331 c.i., Steel crank and girdle, 5.4 H-beams, Forged slugs, TFS alum. heads, ported Stealth 8020 intake, CompCams Xtreme Solid Roller, Holley 750 HP, long tubes, 4speed, 9" 3.50 posi.
e.t. 12.50 @ 112 mph

Ryan Wilke
Gearhead

Posts: 3237
From: Stanton, Michigan, zip 48888
Registered: Oct 2000

posted 03-20-2003 08:53 AM     Click Here to See the Profile for Ryan Wilke        Reply w/Quote
Dan,
I didn't measure them myself, rather I obtained the Edelbrock intake manifold dimensions off of their web site:

www.Edelbrock.com

The Stealth #8020 dimensions were from their web site:

http://www.holley.com/HiOctn/ProdLine/Products/AMS/AMSM/8020.html

--- I'd guesss that most published dimensions are wishful hopes of each of the manufacturers, including FoMoCo....

Ryan

Daniel Jones
Gearhead

Posts: 972
From: St. Louis, MO
Registered: Aug 99

posted 03-20-2003 11:46 AM     Click Here to See the Profile for Daniel Jones        Reply w/Quote
I measured 1" by 1 13/16" for my C90X, a fair bit smaller than a DOOE 351W intake port.

Dan Jones

Ryan Wilke
Gearhead

Posts: 3237
From: Stanton, Michigan, zip 48888
Registered: Oct 2000

posted 03-20-2003 02:57 PM     Click Here to See the Profile for Ryan Wilke        Reply w/Quote
Hey Dan,
Thanks again for getting back with me with your measurements!

Looks as though we both now know of at least two C90X-Bs that have similar port sizing -- which is similar to OE and Edelbrock intakes!

'Til Later,
Ryan

mellowyellow
Gearhead

Posts: 8198
From: So. Fl.
Registered: Aug 2000

posted 03-20-2003 04:03 PM     Click Here to See the Profile for mellowyellow        Reply w/Quote
Seems to me this was discussed sometime ago. But.. have one of those SHELBY ones. It has
S2MS 9424A. IT's on an engine so can't look furthur. Is this one of those Branda repos??

lil289
Journeyman

Posts: 2
From: Berkeley, CA
Registered: Mar 2006

posted 03-26-2006 05:13 PM     Click Here to See the Profile for lil289        Reply w/Quote
Hello all. New here. I realize that this thread is very old but I just had a question about the C90X intake, or rather, a possible equivalent. What about the Holman Moody Part # C4HM-9425-SA. It looks like the C90X and being Holman Moody I would think it would be a good race piece.
http://www.holmanmoody.com/parts/hardpart.htm
Are these style of intakes really that good? I can't help but notice the big difference in runner lengths. Because of the placement of the runners to the plenum, the end cylinders have very long runners and the middle cylinders are very short. How's the fuel distribution in these manifolds? The newer style intakes have more even runner lengths.

DidgeyTrucker
Gearhead

Posts: 1813
From: Greenbrier, TN USA
Registered: Oct 99

posted 03-26-2006 07:11 PM     Click Here to See the Profile for DidgeyTrucker        Reply w/Quote
Most of the people in this thread are still around. I plan on buying the HM manifold, jut to match the HM valve covers I want to use on my '65 FB.

Tracy

------------------
Tracy M&M #245
MAC OS9.1 & 10.3.9/ Earthlink DSL
1956 F-100 Panel w/429 (3.50 9")
1966 F-100 SWB w/351C (3.25 9" - 3.70 posi for Saturday nights)
Music City F-100's,
1965 GT-350 S/C (2.78 1st & 3.70 TracLok 9")
Music City Mustang Club
1969 Schwinn StingRay
Don't focus on the destination....make the JOURNEY the adventure
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Ryan Wilke
Gearhead

Posts: 3237
From: Stanton, Michigan, zip 48888
Registered: Oct 2000

posted 03-27-2006 08:19 AM     Click Here to See the Profile for Ryan Wilke        Reply w/Quote
quote:
Originally posted by lil289:
....the Holman Moody Part # C4HM-9425-SA. It looks like the C90X and being Holman Moody I would think it would be a good race piece.
http://www.holmanmoody.com/parts/hardpart.htm
Are these style of intakes really that good?

How's the fuel distribution in these manifolds?



WELCOME TO M&M, lil289!!

The H/M intake does appear to be similar to the original #C90X- as well as the SHELBY, COBRA, FORD-labeled intakes. The early F4B Edelbrock intake also looks very similar to it. I don't have any actual operating experience with the H/M intake nor have I noticed any published intake comparisons including it. Never the less, I feel comfortable to suggest that it would perform in a similar manner to the above intakes. If someone was to do a side-by-side comparison test, I'd guess the measurable differences realized would be small.

Of course, as you probably know, how well any particular intake manifold performs is dependant on the combination of other parts in/on the car; such as cfm size and type of carburetor, piston compression ratio, operating rpm range of your camshaft, auto or stick transmission, final rearend gear ratio, street or drag-only use, etc. etc. I'd go on to guess that the H/M intake manifold would be "happier" on a modified engine package than a pure stock engine combination.

Good Luck!
Ryan

------------------
'69 Mach I; 306"/4-spd; drag racer.
'65 F100 Short box; 390"/4-spd; Tow Truck.
'85 GT Convert.; last carb'd 5.0L/5-spd; street cruiser.
'94 Ranger; 4cyl/5-spd; commuter/parts hauler.

n2oMike
Gearhead

Posts: 3058
From: Spencer, WV
Registered: Jan 2001

posted 03-27-2006 01:32 PM     Click Here to See the Profile for n2oMike        Reply w/Quote
A little more fuel for the fire...

This is an old Super Ford flow and dyno test of many old 302 intakes on a mild engine. Included is an old Ford Power Parts C90X copy.

http://www.jason.fletcher.net/tech/intakes/intakes.htm

This was before the Victor Jr came out. I beleive the Offy Port-o-Sonic was the biggest back then. I would believe it would make an excellent intake with a little plenum work. As cast, it has absolutely zero smooth radius from under the carb into the runners.

------------------
Mike Burch
66 mustang real street
302 4-speed 289 heads
10.63 @ 129.3
http://www.geocities.com/carbedstangs/cmml_mburch.html
http://www.fortunecity.com/silverstone/healey/367
http://www.mustangworks.com/cgi-bin/moi-display.cgi?220

lil289
Journeyman

Posts: 2
From: Berkeley, CA
Registered: Mar 2006

posted 03-28-2006 12:02 AM     Click Here to See the Profile for lil289        Reply w/Quote
Thanks for the info guys. :-)

MidLifCrisis
Gearhead

Posts: 673
From: Frederick County, MD
Registered: Oct 2001

posted 03-28-2006 12:40 AM     Click Here to See the Profile for MidLifCrisis        Reply w/Quote
quote:
Originally posted by bifs66:
The one sitting in the basement has no "FORD" letters, but has "9/29/69" on the thermostat housing and "Buddy Bar" underneath the valley area. Any info on this one?

"Buddy Bar" was a Ford subcontractor. They made the original COBRA (hollow letter)aluminum valve covers pre-'68. They also made the aluminum oil pans found on Cobra roadsters and first gen GT-350's.


quote:
Originally posted by Moneymaker:

Both the 351 and 289 intakes had the FORD block letters. The only deviations were the 69-70 Shelby GT-350 factory equiment versions that had the SHELBY letters.

When Shelby sold the COBRA name to Ford, he came out with his own series of go-fast parts with the Shelby logo. I believe this was sometime between '68 and '69.

Charlie

[This message has been edited by MidLifCrisis (edited 03-28-2006).]

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