I bought a set of 596 heads a while back, they have bronze valve giudes and stainless steel valves with 2.02 Intakes. I took them apart and cleaned them up bit. I have a question about the ports. The intake and exhaust port seamed to left alone, but it looks like there was some work done behind the valves.
It this just back cutting or do think they opened it up some?
It this just back cutting or do think they opened it up some?
