Hi mileage motor..Probably lead a rough life. We were going to stroker it to a 408., street motor. The cracks are hardly noticeable, even missed them on the 1st. inspection. i've read everything I can find, the Pro engine builder may not use the block from what I can find but i'm sure some / many have used it as is?.... I'm tempted to either leave it 351 or build it as a low $ 393. Probably a lot of them built without knowing about the cracks??? I doubt anyone is going to let you strip an engine and let you check the cam journals before you buy it????...
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