Stopping the knock: Lower compression and ported heads...

The heads should be finished on Tuesday. The man is doing them in his off-time and told my machinist that he is reducing his price since he has taken so long! That was nice to hear. He is doing a valve job and a light surfacing to the deck too. I asked for him to cc one chamber on each head to get an idea on where they spec out. They were 84 ccs according to the Edelbrock chart, but after being "lightly surface milled" a few times, they could be less than that. Of course, if the porter hogged out the chambers after unshrouding the valves, it could be even-steven.