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I am beginning a rebuild of a P18 block I have had for a number of years. I had to source the main caps separately as they were not with the block. The block had been worked some years back before I bought it and the cylinders mic out good, but my machine shop guy tells me that I need to have the block and caps line bored (which he doesn't do - it seems like there aren't many places in Ca. that do), and it is expensive enough to make me wonder if it is worth working with this block. He says there is an alternative (maybe it was line honing?) which can be done provided the forward facing edges on the caps and the block line up almost perfectly, otherwise the boring bit gets caught up on the leading edge of the cap and the process won't work. My center caps are each about .010 proud of the block. Can these be ground a bit to take up the difference? Should I try to source another set of caps hoping to get this measure closer? I assume the caps are all the same width. Is there an acceptable alternative to line boring that is more affordable. Has anyone had this done lately and knows what it should cost?
