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Discussion Starter #1
I found the code of C8AE-6015B I assume that's a "1968 Ford" engine...what kind of ford? What is the 6015B?

Also, my intake has a C8ZE-9425A. Again, that's "1968 Mustang" I assume. What is the 9425A? Where can I find a good casting number reference?

Also, is it true that the vin number is stamped on the driver side of the block under the head? I read that in "Mustangs by the Numbers" but haven't found anything.

Thanks folks,
Dave
 

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Dave,

The engine is a 1968 (C8) Galaxie (A) Engine Part (E) Block (6015) second revision (B).

The intake is a 1968 (C8) Mustang (Z) Engine Part (E) Intake (9425) first casting (A).

Here is a good reference : Parts ID

The VIN was not stamped on most engines. I'm not sure on what engines in 68 got stamped, but I'm sure someone else will chime in.

Good luck.
 

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Dave..I have heard conflicting advise on weather a vin was stamped on all blocks (after 1968) or not. I have a 65 fastback, and didnt think the motor was original to it, so I checked the castings behind the starter, and it came back as a 69 302...after scraping a bunch of gunk :p off the flat spot behind the intake, I found a partial vin. So I am guessing that if it hasnt been tore down and ground away for somereason during a rebuild, it should have at least a partial vin....look behind the intake, right above the bellhousing on a flat machined spot...mine is stamped kinda light, but with some cleaning up, I was able to read it...

Joe
 

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Just because the block says AE, doesn't mean the engine is not original to the, or a, Mustang. It is my understanding that 68 Mustangs came with engine blocks marked AE, OE, and AM. There were none marked ZE. The casting number states the vehicle it was 'originally' designed to be used in. Partial VIN's were known to be stamped on some 68 blocks on a flat surface behind the intake manifold at the firewall. You may want to take a look there.

Where was the car built?
 

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this part of martinb's link states what I was trying to say.
(I highlighted your block number in blue)

Engine Block & Cylinder Head Casting Numbers
221, 260, 289, 302

The 221, 260, 289 were originally designed for the Fairlane and produced only in the Cleveland engine plant from 1962-1965. The 1964 289 casting number for all 289s was C4OE-6015-C (later an F suffix). In 1965, this number was changed to C5AE-6015-E for the 289 2V, 4V and Hi-Po (note the change to full size Ford designation and 6 bolt bell housings). In mid-year 1966 the Windsor plant also began producing 289s. The casting numbers for these were (C6AE-6015-C with a "289" and "WF" in the lifter valley. In 1967 both Cleveland and Windsor produced 289s using earlier year casting numbers but with updated date codes. These two blocks were interchangeable, but there were probably some minor differences. Near the end of the 1967 production run, Cleveland ran out of 289 blocks and substituted their new 302 block, C8-OE-6015-A and marked with 302 in the lifter valleys. This block wasn't intended to see action until 1968. Note these 302 casting numbers returned to the intermediate size Ford or Fairlane lineage. Hence, a late model 289 coming from the Cleveland plant might have a 302 block with 289 innards. The Windsor plant had an abundance of 289 blocks for 1967. In 1968 Cleveland only made 302s, while Windsor continued with the 289s. It appears Windsor also tooled up for 302s but the plug was pulled before they got to make any. They did however, design and produce a 302 block that was used on 289s after the stock of 289 blocks was depleted. The number was C8AE-6015-B with 302 marking in the lifter valley. At the very end of the model year some additional 289 blocks must have been discovered as the older C6AE-6015-C blocks appeared again. In 1969 Cleveland continued with 302 production. Windsor dropped 289 production and took up the 351. In 1970 Cleveland came out with its newly designed 351.


In short:
C8AE-6015-B is a 302 block from the Windsor plant that was used in 1968 on a 289.


C8OE-6015-A is a 302 block from Cleveland from a 1967 289 or a 1968 or later 302 (check date code).

There is no code stamped n the block itself that can be used to identify the cubic inch displacement of the block. Casting numbers can be helpful, but some blocks used several different casting numbers, and in some cases, one casting is not interchangeable with the other. Engines are identified by a tag attached to the engine. This tag is used on all late 1964-1970 models and located under the coil attaching bolt. On the tag is the displacement, assembly plant, model year, change level, engine code (useful in identifying high performance engines) and date of production. This tag is easily lost or replaced with a fake tag, so don't rely solely on the tag for identification.
 

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Discussion Starter #7
Wow...thanks for giving me that information! Unfortunately, the tag on the engine is gone. I was told that it could be a 289 OR a 302, depending on the crank shaft. But, doesn't a 302 have a longer stroke? I am thinking that this is definately a 302, unless the crank and pistons have been changed, which I doubt.

Thanks again!
 
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