Are 340’s rare

Sounds like we got some in here who think weight of reciprocating assemblies have no impact on how fast an engine can rev calling other ppl morons? You know like gee pistons go up, reverse direction, go down, reverse direction, go back up, repeat. So gee how can weight of pistons and rods impact ability for engine to rev? Thats a hard one to figure out, real tricky one, right?

Its fairly common knowledge swap in lighter pistons into a 340 its gonna rev faster. No, not aware, never heard of that, don't believe it? Don't think HEAVY *** pistons have a negative impact on engine performance, no? Big *** HEAVY pistons reversing directions doesn't sap some power?? No, not true? Anyone who thinks that is a moron, right?