I am looking for a intake manifold for my 56 Fairlane with a 292 engine. I see several posts about ECZ 9424 B and ECZ 9425 B intake manifolds. What is the difference between the two? Thank you

Hmmmm...  FoMoCo part numbers and casting numbers are not the same thing.  Meaning that my Ford parts books are not helping me on this.  I do not have a 9424 intake on hand to verify my GUESS...

An ECZ 9425-A is a '56 FoMoCo small base Holley 4000 (Ford or Mercury) or small aluminum base Carter WCFB (some '56 Mercs only) four barrel carb intake manifold.
An ECZ 9425-B is a '57 FoMoCo large base 1st year Holley 4150 (primary and secondary metering blocks), 1st year Ford Autolite 4100, or 1st year Carter AFB four barrel carb intake manifold.
   
Without one to look at, I'm GUESSING that an ECZ 9424 is a 2 barrel carb intake manifold.


NoShortcuts
a.k.a. Charlie Brown
near Syracuse, New York

Hmmmm also. It is confusing.
It would appear to me that "ECZ 9424 B" is a mix of the casting prefex of ECZ and the part # 9424. I don't think that "ECZ 9424 B" is a valid #.

From John's page here:
http://www.ford-y-block.com/fordpartnumbers.htm
he states;
"Individual castings generally have a 4 digit number to identify the part....Many of these numbers have not changed over the years. An intake manifold for a 1954 pick-up is a 9425, the intake manifold for a new Mustang is a 9425."
That would indicate that 9424 was not used as a casting number but only as a part #.
Follow that up with the listing from the Ford Parts Text Catalog:

Note here that the 9525 is only used for a part # in 54 and 55. From then on it went to 9424.

Follow that up with the 59 Interchange Manual:

That would indicate the Part # change in 54 and 55 also.
Part #s do change to reflect what they will fit from the past.
Example would be the Group 31 B9A9424B 2BC (B9 is a 1959 Part #) Intake that fits the T-Bird 57 8-292. The only 292 57 T-Birds were the Demo ones with a 2BC (at least that is what I have read).

So, back to the casting #s that Charlie listed. When you get an intake you always want to get the casting # and not what someone says is a part #.

That would be my guess.

Jim
Norfolk, VA

"MABLE"
1956 Thunderbird Green / Brown Interior (ZE-XG)

"MEAN GREEN"
1956 Mainline (FG-BE)

Thank you for your reply. The reason I posted this question is because I found this;

Intake Manifold Casting NumbersFord

Years	Models	Cubic inch	Descreption	Part #	Casting #
1954	A	239		B5C 9425-A	EBV 9425 D
1955	A	272	use with 2 barrel carburetor	B6C 9425-B B5A 9425-A	ECW 9425 B ECG 9425 B
1955	S A ("182 H.P. Special" with F/M)	292 272	use with 4 barrel carburetor	B5A 9425-D	ECB 9425 B
1956	S,F/L,S/W,A(special)	all	use with 4 barrel carburetor	B6A 9424-B	ECZ 9424 A EDB 9424 D
1956	A	272	use with 2 barrel carburetor	B6A 9424-C	ECG 9424 A
1956	A	272	use with 2 barrel carburetor	B6A 9424-F	ECG 9424 F
1957	A S	272,292 292	use with 2 barrel carburetor use with 2 barrel carburetor	B7A 9424-A	ECG 9424 C
1957	A,S	312	use with 4 barrel carburetor	B7A 9424-B	ECZ 9424 B
1957	A,S	312	used with dual 4 barrel carburetor	B7A 9424-C	ECG 9424 D
1957	A,S	312	used with supecharger	B7A 9424-D	EDB 9424 B
1957/1959 1957	A S	272,292 272	use with 2 barrel carburetor use with 2 barrel carburetor	B9A 9424-B	B9EA 9424 B
1960/1962	A	292		C0AE 9425-F

Notice that the 1957 312 casting number is ECZ 9424 B to be used with a 4 barrel carburetor. This has me confused because on several post here it is mentioned that the best 4 barrel manifold for the 292 is the ECZ 9425 B. That is why I ask the question to begin with. 

I think it is a typo.  I've only seen ECZ-9425-B on that particular manifold.  Regardless, it is easy to identify.  If it has the mounting flange for a "modern" carburetor, then it is the one you want.



Lawrenceville, GA

Charlie, i,m with you on the typo.


  AussieBill            YYYY    Forever Y Block     YYYY

 Down Under, Australia

Thanks again. If you both think it is a typo then I will take your word that it is. So, now I am looking for a ECZ 9425 B intake manifold. Do either of you know where I can find such a thing? Thanks again

There probably will be some here who have one for sale.
eBay is a possibility also.

Were are you located?


Jim
Norfolk, VA

"MABLE"
1956 Thunderbird Green / Brown Interior (ZE-XG)

"MEAN GREEN"
1956 Mainline (FG-BE)

I just picked up a extra B intake, I still have to clean it up, but it looks very good. $200 plus shipping after I clean it up. I also just got a great looking set of posted G heads that I have to get checked out, if they check OK they will be $400.  I will post in the classified section after cleaning and inspection.

Glen Henderson



Freedom is not Free

Letohatchee, AL

I was in SEARCH mode and came across this earlier post. If it has not been answered by now, let me try.

Every part is assigned a PN.  There are two systems (well, actually more but not to confuse the issue), ENGINEERING and SERVICE PART NO. The ENGINEERING NO. stays with that parts always.

Basic PN 9424 / 9425 ID's the part as an INTAKE MANIFOLD. Early/late cataloging can be confusing in that 9425 was once used as both an ENGINEERING and SERVICE BASIC PN. Somewhere in the 50's, FORD began using Basic PN 9424 as the BASIC SERVICE PN and 9425 as the ENG. PN.

What you see on the actual part is the ENG. PN. What you see in CATALOGING is the SERVICE PN. To further confuse, a part may have an original ENG. NO showing, but cataloging will show a different SVC. PN (as an example the 292 / 312 block - 6015 - having different machining protocols. It will have the same ENG. PN but a differing SVC. PN.

Now there variations to the above. ECZ-9425-B (ENG PN) is cataloged as a B7A 9424-B (SVC PN) in cataloging. To add more to the confusion is that FORD changed it's PN PREFIX SYSTEM in the mid-late fifties. The three character code (Ex ECZ) was used for both ENG. and SVC.

Example -

This is a page from the 1949/59 MPC which shows 9424 and 9425 being used as a SERVICE BASIC PN -





I hope all of that made sense.

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