68 302 J code, (not a GT)

I own a 68 Mustang Coupe 302 J code, (not a GT), with a tree growing thru it. I was told the motor is original but I wanted to be sure. I did some research and now I'm not sure. Here's what I have for vins and codes

68 Mustang Coupe J Code VIN 8F01J120xxx (last three numbers replaced with xxx)

Engine Block:
Casting# C8OE - 6015 - A (told it was for a Fairlane?)
This code is right next to it: 8K31 (I'm told it may mean cast on Oct 31st, 1968)
Serial number on block 9R129640 (behind the intake manifold by the top if the bell housing)

Intake Manifold:
Casting # C8ZE 9425-A
Code next to it: 7L27

I'm thinking that the motor was swapped and they re-used the intake manifold, but I've also heard of some strange actions that Ford took and by no means am I qualified to figure it out. The car is beyond repair, but I was thinking it would be a good donor for a Dynacorn 67 Mustang re-creation. If the motor is in fact a J code, I'd use it in the new body, if not.....I will go with newer running gear............. 5.0 Fuel Injection.

thanks for your help.

Heads?

68GT500KR_Vert said:

they should have 4V on them. If they do you could take the motor out and sell it to someone looking for an original Shelby GT350 motor. that's what I did to mine. The 4V heads are high compression heads, they don't run well with todays gas.

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Ok, I'll check the heads. Where will they say 4V? What are they worth in operational (but I would rebuild) condition?

Also, from what I'm reading about block codes, my block was MFG 10-31-68. My guess is that it's not original to my 68 j code coupe. The Ford 4bbl intake seems to be original with a 11-27-67 mfg date.

If the engine was changed, I'm hoping it was just a short block and they kept the J code heads.......

68GT500KR_Vert said:

the "j-code" cars came with a 4V head which had higher compression. I had one. If you take off the valve covers it should say 4V & 302 like this.

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Thank you for the info. I'll check them tonight.

Can you tell me anything about the block based on the casting numbers I provided in the original post?