New Aluminum Cylinder Heads for the Hemis

[SSDA Hemi]

Originally Posted by charlie westcott

There is a 559-M2 head on the list.
Thats what I was referring to.
The Mopar alum head looks to be the best candidate to me, but I dont see any reason to use them with a 60# weight penalty.
There is no performance gain, possibly a loss by putting the same port design in an aluminum head.

I was wondering the same thing, actually got excited thinking Mopar was casting a new iron Hemi head. After looking at the data it appears NHRA screwed up and put the cast iron "559"# with the Aluminum head "M2". There is no aluminum head casting # listed on the 68 Chrysler Tech spec sheet, and I think we all agree there is no present "M2" cast iron Hemi head.
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I hope I'm wrong but it seems the correct casting number added should be 2531110-M2. Hopefully mopar or another source starts casting iron Hemi heads in the future. SS/AH needs parts to survive and advance.