New Magnum heads for 347 with Flow data

So without changing a thing I pulled the head off the bench and back cut the intake valve to show how that influenced the flow.

.1 65
.2 129
.3 176
.4 192
.45 191
.5 189
.6 189.5

So as you can see while low lift flow was improved significantly, it also exasperated the turbulence as a result of increased air speed. J.Rob