Are 340’s rare

340sFastback said
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?

It matters, but it’s not some magic squirrel ****. The converter or flywheel on the back of the crank is the biggest RPM retarder on the engine.

RPM and the ability to gain RPM (which is the definition of acceleration) is far more limited by the inability of the heads to feed the engine.

Standing there, blipping the throttle and thinking the engine is really zippy doesn’t mean a thing. What the engine does under load is what counts.

You can’t test for that on a water brake dyno either.