Rover head port/valve size list?

[Kevin Burtch <kevin_burtch@yahoo.com>]

I've seen breakdowns of the bore and stroke of various Rover
V8s posted, but does anyone have a listing of which heads have
what valve (and maybe port) sizes?

I've seen references to "big valve heads" apparently from
recent engines, but have no idea which ones have them, nor
what "big" refers to (how big?).


Thanks,
Kevin