1976 slant head
This is what you're looking for. See the red circle. This is the air injection passage and it is on the rear of the head that is nearest the firewall. I have one, but it's not something I would sell. But this is what you're looking for. A non air injected head does not have this passage.
This is what you're looking for. See the red circle. This is the air injection passage and it is on the rear of the head that is nearest the firewall. I have one, but it's not something I would sell. But this is what you're looking for. A non air injected head does not have this passage.