Quote: My machinst has always recommended installing hardened seats. He says that the induction hardening only goes a few thousandths into the metal, and the valve job often cuts PAST the hardened part.
The above heads I mentioned were done by member fast68plymouth , I told him to put in hard seats and he called me and said he didn't feel they were necessary because the heads were still hard in the seat area when he touched up the VJ that was done originally by Paul Rossi when I first bought the heads back in 1989 ....
