"Reading is fundamental"- - - -like we used to say in the public education system. We were shooting for a +/- .0002" VARIATION in oil clearance on the race engines. The actual clearance we were after was .0035" so the crankshaft would spin freely at 8K+ RPM, and we used 40 weight racing oil and a high volume Melling oil pump to keep the bearings well-supplied with oil at those speeds.
For rings, just get a set for a 265 V8 (same bore) and use 6 of the 8 ring sets. Those rings don't know what engine they're in, and they can't count how many cylinders it has.
Jerry
