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Old 09-08-2023, 04:42 AM
black69 black69 is offline
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I just checked the old ad I had here for my engine, and the person you want to look up is named Mark Gillepsie for decoding of those letters (he has a book for that). I think he is in Indiana. He was the jedi master of info on Yenko ZL-1 blocks. The letters decode to an engine number. All letters like yours.

I could be wrong, but 90% sure I am right. Good luck.

-bob

Last edited by black69; 09-08-2023 at 02:10 PM.
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Old 09-08-2023, 11:45 AM
EZ Nova EZ Nova is offline
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So no one knows what

06017

means on these blocks?

Also it's strange for the Yenko blocks, they stamp SY and not YS then 2 other letters that could be someone's initials?
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Old 09-08-2023, 02:14 PM
black69 black69 is offline
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Quote:
Originally Posted by EZ Nova View Post
So no one knows what

06017

means on these blocks?

Also it's strange for the Yenko blocks, they stamp SY and not YS then 2 other letters that could be someone's initials?
Read my post above, the SY is what it is for a yenko I believe, and the other letters decode to an actual engine number that could be tracked. From the letters on mine, this person I mention above has a book that tracks those blocks that were made. I think he worked at Yenko back in the day. In any case if the owner of the block gets in contact with that person, I am sure we can get an update on how its decoded. I pretty much forgot what I knew as I sold my block a long time ago, but put a ton of time into finding out what I had.

Last edited by black69; 09-08-2023 at 02:24 PM.
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