What year did Ma Mopar start putting induction hardened valve seats in their heads? I'm thinking 72 or 73. I'm really not sure, after all, it was the early 70's.

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If a MedAlert bracelet is the only bling you wear......You might be getting old.

1972 on slant-6s.
1973 on V8s.

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一期一会
Too many people who were born on third base actually believe they've hit a triple.

Thanks for the quick reply. I just bought a head for my 66 Valiant and if the date code 31.12.71 means it's a 72 you just saved me a pile of money. Now I can afford to become a paid member. Thanks again.

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If a MedAlert bracelet is the only bling you wear......You might be getting old.

Will a head with hardened valve seats like a 85 Dodge truck slant 6 swap into my 65 225 Dart?