1971 340 Build - Choosing piston rings dilemma

70Hardtop said

Interesting... that was about the limit I was thinking of too. 360 engines are very popular here so it will be interesting to see if they sell or not. But compared to the US market for Mopar engine stuff, our market (supply and demand) is tiny.

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I wouldn't have went that far if I didn't have too. 30 was a no go so we tried 40 and it almost got there. There was two tiny spots in the 1 and 8 cylinders that didn't clean up and probably it would have been fine to run it like that but I didn't want to chance getting blow by, a weak cylinder or even worse a broke ring.