risk n boring a K321
I had just gone through the same thing getting my block done. The Mach shop I have always had do my work did not really want to deal with it. They have gotten rid of the older boring machines to make room for the new and improved equipment. it is as much of a hassle for them to set up for one as it is to do 6 or 8 cylinders.
I had to go all the way out to 40 over due to the damage done by overheating and crud. looked more like a bee hive.
good luck with your build make sure you know what age your block is , according to parts guy there are different size valves from early to late model K 321 just make sure buyer beware ..know exactly what you need. These guys know in this group. It's what they DO..
LB
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