No IMO a 5.2 shouldn't be called a 318 if one is going to say "a 318 can beat a 340" its misleading. There are too many differences, compression ratio heads roller cam etc. I've said it before its like calling a 5.0 Ford a 302. Once tyou tear them both down side by side you'll see the differences, a set of magnum pushrods don't just drop into an LA engine.