boring my 318

Slow down. tow different designs. Magnum, and LA. "302" castings are for LAs. Those are the pre-92 small V8s, including 273, 318, 340, and 360s. All heads interchange on those except a few early 273s that take a special intake. Post '92 all are Magnums, and they take a different intake (or get re-drilled) and need different lifters and pushrods. The "302s" are LA heads. You bolt them on, and run them. Your books are a source of info. But they are not bibles. The more info you get, the less some of the build ideas in them will make sense. Running 360 heads instead of good 302s ona 318 street engine is an example of this.