428 Pistons ?? - Pontiac GTO Forum
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post #1 of 1 (permalink) Old 05-05-2019, 01:35 PM Thread Starter
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428 Pistons ??

A friend of mine has a set of pistons out of a 428 that he has saved from quite a while ago. We were trying to identify the pistons. On the top of the piston, there is a ".030" indicating it is a .030 over piston. There are no other manufacturer markings except "207-99" Has anyone ever seen markings similar to this? I have not seen the pistons as he lives on the other side of the country. I tried to get him to send a picture but he doesn't know how. What I've done is send him 10 pictures of different pistons and numbered them. I told him to pick a picture that is close and tell me what number it is. That's where it stands, I haven't heard back from him yet. So, has anyone seen the number
"207-99" and can help identify this piston?
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