hi all.

i have here 2 heads, 1 from an 1300 and 1 from a 1600 blok, the valves have the same size but one has a chamber in the head, what is the difference between these? and wich one would be better the mount on a 1600 blok? or is there no difference?

if i would flow this head would that give noticeble more power?

many thanks