Thats why it concerned me when I discovered the engine in my wrecker was .060 over. I went ahead and cut the ridge, honed it, knurled the pistons a little and called it good. It has been running like that for 15 years. The irony is about a year after I built it, I found a 371 Olds which is the block GMC used with standard cylinders and almost no ridge. I bought it for a spare, but I have never used it.
