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fordpower View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote fordpower Quote  Post ReplyReply Direct Link To This Post Topic: 302 heads
    Posted: 29-March-2013 at 2:21AM
What does a3b stand for on the head.
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Robbdtme View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Robbdtme Quote  Post ReplyReply Direct Link To This Post Posted: 29-March-2013 at 3:16AM
Probably a date code either 83 or 93 manufactured( 73 but probably not as the coding was a little different ).  Look lower on the head for a 4 digit code something like E3TE etc. That will tell you more.
Johnny cash Special 74-75-76 freak. 77 XR7. 78 LTD II sport looks pretty but poop 302 in it.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote fordpower Quote  Post ReplyReply Direct Link To This Post Posted: 29-March-2013 at 5:06AM
Will look further. Thanks
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Post Options Post Options   Thanks (0) Thanks(0)   Quote fordpower Quote  Post ReplyReply Direct Link To This Post Posted: 29-March-2013 at 5:11AM
6d26 6d9 all I can find.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote fordpower Quote  Post ReplyReply Direct Link To This Post Posted: 30-March-2013 at 8:35AM
Well I did some digging and found that my block is a 74 out of a falcon the no on the heads were 83 other no. could not find any reference 6d26 6d9.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Blueoval76 Quote  Post ReplyReply Direct Link To This Post Posted: 30-March-2013 at 8:59AM
Ok I was gonna post this when you first asked but due to technical issues I gave up! Now I finally got the pic you need. Look at the pic as it shows where you can find the part number. If the heads are not off you wont be able to find out. Ford part numbers go in order by letter for the first character. C is 1960, D is 1970, E is 1980, F is 1990. The second character is going to be the number in order. For example 1968 would be C8. Ford part numbers always start with a letter and number followed by 2 more letters. The 3rd and 4th letters designate Model and Design Engineering office. 
Here is a site to better help you figure out the part number its Australian but is still a good example....
 
 
 
 
 


Edited by Blueoval76 - 30-March-2013 at 9:06AM
68 Galaxie Wagon 390/auto/2.70
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Robbdtme Quote  Post ReplyReply Direct Link To This Post Posted: 30-March-2013 at 9:04AM
Awesome, I was just going to post a pic .
Numbers break down for ford.

Ford makes it really easy to read their casting numbers when you know what you are looking at. Make sure you also understand that the casting numbers are not the same as part  numbers or engineering numbers.

Here's how a typical Ford Casting number breaks down.

Let's use C5AE-6015-A as out example in decoding the casting number.

The First position indicates the decade:
B = 1950-1959
C = 1960-1969
D = 1970-1979
E = 1980-1989
F = 1990-1999

The Second position indicates the year of the decade:
C5AE-6015-A  So we know this casting is from 1965

The Third position indicates the car line
A = Ford
D = Falcon
G = Comet, Montego, Cyclone
J = Marine-Industrial
M = Mercury
O = Fairlane&Torino
S = Thunderbird
T = Ford Truck
V = Lincoln
W = Cougar
Z = Mustang

So thus far we know C5AE-6015-A means 1965 and the car line was Ford

The Fourth position indicates the engineering group:
A = Chassis Group
B = Body Group
E = Engine Group

If the item is a service part, the fourth position then indicates the division.
Z = Ford Division
Y = Lincoln-Mercury
X = original Ford Muscle Parts Program
M = Ford Motorsports SVO or Ford-Mexico

The four digit number (6015 in the above example) indicates the basic part number. The basic part number tells us what the part is. 6015 in the example tells us it's an engine block. Or the number 9510 is for carburetors and so forth. Every ford part has a basic part number, all the way from brackets to nuts and bolts. This makes finding certain parts awhole lot easier in fords master catalog.

The last character in our example C5AE-6015-A is the suffix. "A" means an original part, "B" means the first revision of the part, "C" means the second revision, "D" means the third revision and so forth. During the hectic days of constantly stiffer emissions in the 1970's it was very common to come across a cylinder head that had AA or AB stamped on it. Meaning many revisions as they strived to meet emission regulations.

So in conclusion let's look at our example

C5AE-6015-A

The above part was casted in 1965 for the Ford car line in the engine group, it is an engine block and was an original part.

Johnny cash Special 74-75-76 freak. 77 XR7. 78 LTD II sport looks pretty but poop 302 in it.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Blueoval76 Quote  Post ReplyReply Direct Link To This Post Posted: 30-March-2013 at 9:06AM
Haha!! I was updating that info in as you posted! Lol! LOL
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Robbdtme Quote  Post ReplyReply Direct Link To This Post Posted: 30-March-2013 at 9:47AM
LOL teamwork!!!
Johnny cash Special 74-75-76 freak. 77 XR7. 78 LTD II sport looks pretty but poop 302 in it.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote fordpower Quote  Post ReplyReply Direct Link To This Post Posted: 30-March-2013 at 12:20PM
Ok a3b does not mean 83 as a few people told me.I would take that to mean 3ed change. d60e and d09e would be falcon,so heads are from same engine as block a 1974falcon 302.Thank you all
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Post Options Post Options   Thanks (0) Thanks(0)   Quote zjosh Quote  Post ReplyReply Direct Link To This Post Posted: 15-December-2014 at 1:03AM
get the break down as stated above But do you know what "GA" means.

My 351c 4 bolt main block is stamped

D2AE GA 1K29 which I believe would be

1972 Ford ( No Specific Car) Engine (Component) "GA"? 1971 Oct 29 was when it was cast


Thanks for any help
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Post Options Post Options   Thanks (0) Thanks(0)   Quote zjosh Quote  Post ReplyReply Direct Link To This Post Posted: 15-December-2014 at 1:06AM
I was also told that all 351c 4 bolt main were cobra jets, is this true?

Tom
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Post Options Post Options   Thanks (0) Thanks(0)   Quote dave302 Quote  Post ReplyReply Direct Link To This Post Posted: 15-December-2014 at 1:16AM
I believe that the many of the 1972-1974 Q-code 351C "Cobra Jet" engines had 4 bolt mains.
And some of the the 1971 R-code "Boss" 351C engines, had 4 bolt mains also.
 
And some of the 1972 R-code 351C "HO" (High Output) engines had 4 bolt mains also.
And most of the 351C 2V engines had two bolt mains. 


Edited by dave302 - 15-December-2014 at 11:48AM
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Post Options Post Options   Thanks (0) Thanks(0)   Quote zjosh Quote  Post ReplyReply Direct Link To This Post Posted: 15-December-2014 at 1:42AM
so all cobra jets are 4 bolt main BUT NOT all 4 bolt mains cobra jets

Any info on what the GA stands for?
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Post Options Post Options   Thanks (0) Thanks(0)   Quote dave302 Quote  Post ReplyReply Direct Link To This Post Posted: 15-December-2014 at 1:47AM
Originally posted by zjosh zjosh wrote:

so all cobra jets are 4 bolt main BUT NOT all 4 bolt mains cobra jets?
I believe that many of the 351C Q code Cobra Jet Engines had four bolt mains.
But not all four bolt main 351C Engines are Cobra Jet Engines.
 
 
I do not know what the GA stands for though.


Edited by dave302 - 15-December-2014 at 11:52AM
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Big Bird Quote  Post ReplyReply Direct Link To This Post Posted: 15-December-2014 at 11:13AM
in your example - (C5AE-6015-A), C5 designates the design year of the part (1965) not manufacture date, this part may have been used for many years, and may be updated several times (suffixes) but until a major redesign, it would still be C5AE-6015-(+update suffix) regardless of date of casting.
The above post should be read in a "Grumpy Old Man" voice.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote zjosh Quote  Post ReplyReply Direct Link To This Post Posted: 15-December-2014 at 11:27AM
D2AE GA 1K29

This is the block id and I am trying to figure out what GA means

Tom
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Post Options Post Options   Thanks (0) Thanks(0)   Quote 72GTS351CJ Quote  Post ReplyReply Direct Link To This Post Posted: 15-December-2014 at 11:29AM
The 4 bolt main has been discussed many times. I think we can safely say you really don't know until you pull the pan off.-Rick-
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Regul8r Quote  Post ReplyReply Direct Link To This Post Posted: 15-December-2014 at 11:42AM
Originally posted by Big Bird Big Bird wrote:

in your example - (C5AE-6015-A), C5 designates the design year of the part (1965) not manufacture date, this part may have been used for many years, and may be updated several times (suffixes) but until a major redesign, it would still be C5AE-6015-(+update suffix) regardless of date of casting.
 
Yes, you will find many 72 castings in cars all the way through ... until they ran out of them.
 
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Post Options Post Options   Thanks (0) Thanks(0)   Quote dave302 Quote  Post ReplyReply Direct Link To This Post Posted: 15-December-2014 at 11:54AM
Originally posted by 72GTS351CJ 72GTS351CJ wrote:

The 4 bolt main has been discussed many times. I think we can safely say you really don't know until you pull the pan off.-Rick-
I agree with this statement.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote zjosh Quote  Post ReplyReply Direct Link To This Post Posted: 15-December-2014 at 11:56AM
thanks rick, can you direct me to that link. So I can read. kinda new not sure how to work the site yet.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote 72GTS351CJ Quote  Post ReplyReply Direct Link To This Post Posted: 15-December-2014 at 12:45PM
Go into "engine specific forum" subtitle 335 series engine. There is all sorts of information about the cleveland
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Rockatansky Quote  Post ReplyReply Direct Link To This Post Posted: 15-December-2014 at 2:34PM
-GA is just a casting code suffix, it doesn't 'mean' anything but simply distinguishes that casting from another
 
-GA does happen to be the correct cast code for the Boss 351 cylinder head though, but not all -GA heads are necessarily Boss 351 heads. any casting can be machined to a low spec or a more desirable spec such as the D2AE-CA 351C block... they can be found machined as both 2 bolt mains and 4 bolt mains
 
possible a -GA cylinder head can have pedestal rockers or screw-in studs & be machined for spring cups
 
and it gets even screwier, Ford would use various parts of core boxes years apart to create a different part than the first run that carried that cast code. example is the 351C XE or Australian Nascar block, same cast codes years apart one is a 'pillow' block while the other is regular with other differences too
 
this means that the date code can also play a part in the ID
 
 
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Post Options Post Options   Thanks (0) Thanks(0)   Quote 72GTS351CJ Quote  Post ReplyReply Direct Link To This Post Posted: 15-December-2014 at 2:56PM
I was just about to say all that. Lol. Thanks Rock . That's it in a nutshell
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Big Bird Quote  Post ReplyReply Direct Link To This Post Posted: 16-December-2014 at 11:10AM
"nutshell" LOL
Those engineers recycled parts years later as well. 351 Lightning uses a 70s Torino camshaft...
The above post should be read in a "Grumpy Old Man" voice.
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