Mopar '340-X' Heads vs. Chevy 'Fuelie Heads'

I remember some of the earlier 461 castings,have bigger cc exhaust & a higher short side radius on the exhaust ports. Compared early '62-'63 castings,to later '66-'67 castings. Both unported,don't remember valve diameters... You know anything,about this 69 440 ?