16v vs. 8v

[ratznfragn]

I just have a question to satisfy my natural curiousity.
I know from reading (plenty of) previous posts that a 16v head will not work on a 8v engine. I was just wondering,since I don't have access to both,what are the differences? I would guess cylinder stud spacing is different since they won't interchange,but that's a guess and I know with the experience present on this board you guys can answer this!
Thanks for indulging my curiousity!
(And no,I don't have some hair-brained plan to try to make it work,so put up the torches and pitchforks!)

[Steve]

Besides the bolt spacing, it's also a matter of oil passages and the height from the head/block mating surface and the cams, which would dictate the timing chain length.

I am sure there are also other differences, these are just a couple that I have heard about. I don't have any 16-vlave engines and have only worked on one, so not a lot of experience with them.

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[ratznfragn]

Thanks for the answers,Steve!

[chef1366]

The pistons are different also.

[ratznfragn]

Thank you for the info,Chef!