My Turn for a Cam question - 318 Build

BTW, OP, are you sure about the pistons being .030" in the hole? And what number of eyebrows are there? .030" would not be the case for any stock pistons. Just trying to see for sure what SCR you have; if the pistons are really .030" down, then 9:1 is what I get too. Just trying to be accurate here...

They are indeed .030 in the hole. They are not stock pistons. They were replaced the first time I built this engine about 17 years ago. At the time, I let the machine shop get all the parts, they told me they couldn't find a "mopar" piston the right size, with full floating pins. So what they put in it is pistons that have 2 valve reliefs, but they are in the wrong place to actually do any good as valve reliefs. I don't know if the're chevy pistons or what. I'll post a pic later to show what I mean.

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