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Author Topic: Intake manifold trivia  (Read 1958 times)
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realshelby
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« on: January 16, 2008, 06:44:04 AM »

Our trivia question for the day is......

2x4 289/302 intake manifold

SHELBY  cast into the #1 (?) manifold runner

SFJD9425E    part number behind distributor

Holley carbs # COAE 9510 N
LIST 1848-1
7B1

Only one carb has the choke assembly, other does not look like it was ever run with one.

Linkage that ties carbs is a straight rod with heim joint ends and has built in adjustments. Was with manifold, carbs. Looks like it came with the "kit"?

I have had this setup since around '78. Ran it on two different cars, 3 different engine combos. Very nice on the street and ran better et's than a single plane with 750 Holley.

Just curious if anyone knows what its original purpose was?

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65 GT coupe  69 GT 500  00 Lightning  03 mach 1
cobrabob
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« Reply #1 on: January 21, 2008, 05:58:42 PM »

Looks like no one joined the trivia contest. That sounds like an aftermarket manifold that CS peddled. I have a dual quad that just says COBRA on the #1 runner, with no part numbers of any sort.
That linkage rod is interesting--I got a similar one with my car that , although it had a single, at one time had dual quads. How do you mean it's adjustable--just the Heim ends or another way?

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realshelby
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« Reply #2 on: January 21, 2008, 06:08:13 PM »

How do you mean it's adjustable--just the Heim ends or another way?

It has a collar that slides, held in place by a set screw. It adjusts when the secondary carb front throttle starts to open.

The carbs are mounted "forward" with the fuel inlet on the left.

I'll have to post some pics of it. With what appears to be a Shelby part # I thought maybe it was something that might have been used for an early trans am car but I really have no idea.

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shelbydoug
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« Reply #3 on: January 21, 2008, 06:11:54 PM »

I think that you have the Shelby aftermarket version of the '67 Trans-Am intake.
Yours should say SHELBY in very small letters on one of the front runners.

I don't know what the original "factory" version said but Ford sold one across the counter. I don't know if it is the same and I think it just says Ford on it in small letters and the firing order.

I have the Blue Thunder repro of it. It just has the firing order on it. Blue Thunder claims it has improved runners over the original.

There is a thread in CSX2000 Cobras title R-3259 Holley Carb. It has a picture of an original Trans-Am race manifold with the original carbs and linkage on it.

I'm running two Holley 600cfm carbs backwards like the 427's and with 427 linkage.

I am still amazed at how well this setup really runs. I love it.

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shelby73
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« Reply #4 on: January 21, 2008, 08:15:05 PM »

I had one of these intakes and 2 holleys I used to run on 6s770 and it had Shelby stamped on it, believe it or not it was very streetable.

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realshelby
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« Reply #5 on: January 24, 2008, 10:03:48 AM »

Well, I have had some good responses but no real history about why/where this manifold came from. Here are a few pics that might help. As I recall the numbers on the carbs checked out to be for an Edsel or something like that. I believe they are rated at about 450 cfm. And they were quite streetable. Grin











« Last Edit: January 24, 2008, 10:07:55 AM by realshelby » Logged

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shelbydoug
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« Reply #6 on: January 24, 2008, 11:05:51 AM »

Huh, what? It is the Shelby Autosport aftermarket version of the Ford C6ZZ Trans-Am manifold. I thought we said that?

Shelby Autosport was an aftermarket company that existed from roughly 1968 to 1972.

It says SHELBY in small letters on the #1 intake runner. The carbs you have are R-1848. The R-1848A is an aftermarket replacement carb.

The original carb is also stamped C0AE-9510 N. They fit 59-60 Thunderbird and Edsel.

The "performance" carbs for that intake are Ford Special application and are stamped with two numbers. C60A-9510 A/R3360, which is the primary and C60A-9510 B/R-3361, which is the secondary.

These are the 600cfm carbs designed for the original C6ZZ manifold. They were sold across the parts counter and it is referred to as the "trans-am" set up.

Your's is the "aftermarket" set up. Original or aftermarket it runs shockingly well. Much better infact then the original 3259 carb does.

« Last Edit: January 25, 2008, 01:43:30 PM by shelbydoug » Logged

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realshelby
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« Reply #7 on: January 24, 2008, 11:45:55 AM »

Shelbdoug, your earlier response was not as detailed. This response was exactly what I had hoped for! The time listed would be about right for when I found it. Do you know if these manifolds were bought as a kit with carbs and linkage?

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shelbydoug
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« Reply #8 on: January 24, 2008, 12:25:47 PM »

My catalog which is dated 1971 lists the manifold, carbs, linkage seperately.

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