Quote Originally Posted by jerry clayton View Post
Heads were good heads back in the 70s---guide and seat wear were bad as lead dissappear from gas---you might seriously think about guide liners and hardened exhaust valve seats
I don't do them any more because we can sell alum heads from Dart, Air Flow, Edelbrock etc cheaper

I will totally agree about the guides - almost make me believe they are made of balsa wood with wear - though I never did have seat problems with the last two sets I used, but probably would have except I used SS valves so heat transfer may have been better then the OEM style