Originally Posted by gnx547

I looked again and I don't see the tube and I don't see any tube by the passenger side. I would assume it would be close to the hose of valve, The previous owner must of removed it. What is used to plug the holes in the back of the heads? Are there 2 holes, one hole for each head? These holes on the back of head, are they on top, middle, or bottom of the head? The heads on the car are edlebrock.