Ryan the triple nickles were pretty standard on the 55 331s and as I understand it early 56 354s. That being said from 54 on (when they enlarged the ports and valves) IMO there really wasn't such a thing as a bad HEMI head.

I don't know that you'd really notice any difference between the heads on a street driven car unless you're really winding it up........Super/Turbo charging would probably be a different story.

Of course you would get bragging rights, but only the hardcore Mopar guys would know what you're talking about.


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