Earlier this summer I was sent these heads from a FABO member to work over. These open chamber heads had been previously worked on by another shop and they were reportedly flowing somewhere in the high 270's. First thing I do is a flow test to see where we are starting.
4.06" bore @ 28" H20 2.02/1.6
.100 62.4 51 w/pipe
.200 131.5 116
.300 191 154
.400 231.7...
Reviving some old W2's
