B-block cylinder heads?
Ah the chart didnt come up the was I intended. Here is another go around.
Lift..... CFM flowed
100..... 66..... 77
200.....130.....138
300.....193.....208
400.....248.....257
500.....284.....293
600.....320.....319
700.....318.....328
.....Max.......440EZ
...Wedge....Prepped