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http://memimage.cardomain.net/member_images/4/web/472000-472999/472513_15_full.jpg[img]

Both have round port exhaust. maxima only has smaller intake valves, however, 280ZX N47 intake valves drop in.
Maxima N47 on the left, 280Z/ZX N47 on the right./



Post Edited (Oct 10, 7:07pm)
 

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The biggest, most dominant difference is the combustion chamber. The maxima head has a smaller (~40cc), heart-shaped combustion chamber. This gives you a little over 10:1 compression and the quench needed to maintain daily driveability on pump gas.
 

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Discussion Starter #6
would there be anything on the outside of the head that would be easy to see?

im just curious as to which head i have on my z. i knew there was two of them, just didn't know which one
 

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The combustion chambers of the Maxima heads measure out at 42cc's. If you find one with 40cc's or 39cc's it has been shaved down, most likely from a previous rebuild.
 
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