Porting – before or after valve job?

You guys who port your own heads - do you get your valve job done before you start grinding? If so, why?

I might be answering my own question here because I am planning to get a set of heads cut for larger valves. But just for discussions' sake, I'd like to hear a general consensus on this particular subject.

BTW, I have two sets of 89-91 roller cam 308 heads and a set of MP porting templates.

Thanks,

- Greg
Author: admin