340 or 408?

These guy's need to make up their mind.
Is the 340 the big block killer as claimed.
If so surely shouldn't have a problem with a 340 with a 4" stroke all else being the same. :poke:

It just goes on and on and on. Start a post of their own and have at it with every chart, graft, YouTube videos, calculations, formulas, etc. but it’s never on a post they start.