The head is my Kirby/Sissell aluminum head.
The valves are 2.08' in & 1.65" ex IIRC.
It is a work in progress still. It flows about 320 CFM @ .600
It would flow a lot more if I opened up the intake port,but it is a street car & not a max effort all out performance head.
The intake is 1.71" round port.
Mike has got to 400 CFM on his all out ported bigger valve set-up head.
The cylinder head is pretty heavy (still lighter than stock cast iron head)& has a 3/4" thick deck suface
MBHD
