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Ha, he also states that all big block mopar blocks cast after 73 are THIN WALL and should not be bored more than .030 ... ...




He's pretty much on the mark about those 74-up
motors. Walls are not as thick as the earlier models, particularly the 70' and earlier.






Sorry , that is incorrect, AndyF. did an article a number of years ago that dispelled that MYTH , the later blocks are usually thicker.