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A couple of you answered the other day when I asked what were the part numbers on 428CJ heads and you gave me the numbers for them. Now I need to know where to find the numbers, I pulled the valve covers and saw no numbers to speak of, nothing in a long sequence.
I didn't take the valvetrain apart, but didn't see any numbers? Thanks in advance........Keith
 

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cobra jet heads

The numbers are between the second and third spark plug holes.
c80e-6090-h 1968
c80e-6090-n 1968 to 1970
 
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