I bought these 305 heads that have already been opened up with larger valves with a 3 angle valve job and a bowl blend. The runners are still unported and still as cast. I have been reading up on heads and bought a book on it. I have followed a few posts here on the subject.
One thing they always say is to have the valve seats machined after doing the porting. Since I already have the larger valves and they hardly have any miles on them, can I skip taking them to the machine shop for any reason?
I know I will have to be extra careful around the seats. Depending on how much they took out I might do some work around the valve guides. Thanks in advance for any advice.
I will start on this hopefully next week after the 305 comes out for the 350 that's going in.