inlet valves

[Carl French <cfrench@cybertours.com>]

Reading 'Power tuning', many questions. I have an older head and
looking at various head mods here. I think I am going with stellite
valves, bronze guides, hardened inserts. What about three angle seats?
What about increasing inlet valve sizes from 1.567 to 1.625? It appears
to make a diff. BTW, I am going .040 over, have a 270 cam (thank you
Lawrie)and am keeping my SU's on my GB engine/head.
TIA
Carl French
67B