New Magnum heads for 347 with Flow data

Here I went straight to a decent valvejob with no backcut or blending at all. This is just to answer some questions some may have.

Int Exh
.1 65 50
.2 122 95
.3 167 130
.4 194 135
.45 194 136
.5 192 137
.6 190 138

By now the port is way too fast and fairly turbulent. Worth noting is the exhaust. Even after a really nice cut from the seat to the throat the flow didn't really pick up hardly at all, However it was super quiet and I mean super quiet from .3" -.6" .

Before valve job is on left, revised is on the right. J.Rob