Machine shop called to tell me my 312 block has a sizable crack in the water jacket. I just pulled the engine out of my 56 merc parts car to find it has a 292. This will be a high performance build and crank offset ground to increase stroke. Now the question, am I better off cutting the crank down to 292, or align boring the block to the larger main size? I'm more concerned with doing it the best way rather than the cheap way.