427 Engine ID Tag Help (ID# 366?)

[priores]

Hello All,

Brand new to the group. Just purchased a 67 Cobra S/C replica. Was looking at the engine ID tag and was hoping someone could help decipher the engine code number. It indicates engine code number 366. (The forum gives me an error when I try to upload the picture.) All of the ID code lists I have seen go from 364 directly to 368. No info on code 365, 366, or 367.

Any idea what this means? Why would those designations be skipped? Could it be a fake tag?

Thanks for your help.

[RICK LAKE]

Sorry couldn't help myself. Call the builder, it may be nothing or the number was used before. Rick L.

[Seaman]

I'd guess that it was originally a marine or industrial engine. That's why you can find it listed in the automotive reference. I used a marine 427 in my car and I put the engine tag back in, even though it now had dual quads, different heads, and higher compression. Very few engine tags are still around, so I put it back on the carb stud. You might be in the same lot. I couldn't find the number either at the time.
If its BRG and in the Yakima area, could be my old car.

Enjoy.