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how do I know what head is on my 74 260 Z? I know there are diffrent ones. is there a csting number on the head? I ask becays at the junk yard I work at we have abou 5-6 L28E motors on the ground and I was wondering if and of thier heads would flow better than my stock one. and what heads are better than others.
 

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I have N47...

I'm told my compression is higher than most (186 on all six). It has the larger valves of the L28, and I would suppose a small combustion chamber.
It easily pulls to 7000. There is not the fall-off like in some other cars I've driven. It seems to actually like the higher revs, but I shift at 7000 because I like to keep my pistons...
 
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