Frustrated
The seats were worn out and years of unleaded gas had the valve recessed in the head the porting did not effect it there would of been a tiny lip to clean up after the seats were installed. I have had a set of heads for a 318 repaired in the very same way and dozens of sets of 4.3 gm heads repaired just the same as these were going to be repaired. Because of the lower octane levels or high temps especially with nat gas or propane this is common practice the exhaust is usually effected far worse than the intakes but in this case i guess it was do it all once and chances are probably not for a long time and worst case is if you do a valve job down the road it would be a quick grind and away u go again. When I looked at the heads when I bought them they were pitted in the seat area. Maybe I should of looked for another set of castings but beggars can't be choosers and there is more than one way to skin a cat it just didn't work out this time.I wanted to believe there was a easy fix I knew better but because I had quit a bit of time invested I thought it was maybe worth a shot